DEPARTMENT OF TRANSPORTATION COAST GUARD BULLETIN NO. 65 i!]oraiOP/ LIURARY _ Woods Ho.'.9, Mgiss. Report of the imematio Ice Patrol Service in the North Atlantic Ocean ^1 SEASON OF 1979 .AJ5 n^ 65 CG-1 88-34 : m o= x- B- I cC E r- . m E □ i r^ s m = CD DEPARTMENT OF TRANSPORTATION UNITED STATES COAST GUARD MAILING ADDRESS: G-OMl/31 U.S. Coast Guard Washington, D.C. 20593 (202) i+26-lb8l Bulletin No. 65 REPORT OF THE INTERNATIONAL ICE PATROL SERVICES IN THE NORTH ATLANTIC OCEAN Season of 1979 CG-188-34 FOREWORD Forwarded herewith is Bulletin No. 65 of the International Ice Patrol describing the Patrol's services, and ice observations and conditions during the 1979 season. ^/^^^^^^^W- e. F. HCLLha>WO'JTH Actinf Chief, Office nf p. Si C|^5r5Vf!?!?5 DISTRIBUTION - SDL No. 110 A B C D E F G H a b c d e f g h i J k 1 m n 0 P q r s t u V w X Y z 1* 1* 1* 1* 1* 1* » 2 10 2 5 1 1 5 1* 1* 1 NON-STANDARD DISTRIBUTION:* Atadfghv LANTAREA only * B:b LANTAREA (50); B:b PACAREA * C:aq LANTAREA only SML CG-4 (5) TABLE OF CONTENTS Page Preface v International Ice Patrol 1 Aerial Ice Reconnaissance 2 Communications 3 Ice Conditions, 1979 Season 4 Appendices App. A— List of Participating Vessels A-1 App. B— Oceanographic Conditions B-1 m PREFACE This is the 65th in a series of annual reports on the International Ice Patrol Service in the North Atlantic. It contains information on ice conditions and Ice Patrol operations for 1979. The Marine Science Branch, Coast Guard Atlantic Area, prepares this report and acknowledges the assistance and information provided by the Cana- dian Department of the Environment, U.S. National Weather Service, U.S. Naval Weather Service, U.S. Coast Guard Oceanographic Unit and the U.S. Coast Guard Research and Development Center. We thank Lewis Research Center, National Aeronautical and Space Administration for their continuing ef- fort to improve RADAR detection of icebergs. We extend our sincere appreciation to the staff of Canadian Coast Guard Radio Station St. John's/ VON for their excellent support during the 1979 Ice Patrol Season. INTERNATIONAL ICE PATROL, 1979 The U.S. Coast Guard conducted the 1979 Inter- national Ice Patrol Service in the North Atlantic Ocean under the provisions of Title 46, U.S. Code, Sections 738, 738a through 738d, and the Interna- tional Convention for the Safety of Life at Sea (SOLAS), 1960, regulations 5-8. During the 1979 season, the International Ice Patrol disseminated information to the mariner on the ice conditions in the Grand Banks region of the Northwest Atlantic. To achieve this, the U.S. Coast Guard patrolled the southeastern, southern and southwestern limits of icebergs and maintained a plot on the extent of this dangerous region. Commander, Coast Guard Atlantic Area is Commander, International Ice Patrol and directed the 1979 operations from the Ice Patrol Office located at Governors Island, NY. The office analyzed ice and environmental data and prepared the daily ice bulletins and facsimile chart. All Coast Guard units deployed on Ice Patrol missions came under the operational control of Commander, International Ice Patrol. Vice Admiral Robert I. Price, U.S. Coast Guard, was Commander, Inter- national Ice Patrol. The Ice Patrol Officer was Commander Jerry C. Bacon, U.S. Coast Guard. Preseason reconnaissance flights in January and February 1979 determined the early season iceberg distributions. Based on these flights the season commenced 6 March 1979. From that date until 21 July 1979, an Aerial Ice Reconnaissance Detachment operated from St. John's, Newfoundland averaging a patrol every other day over the Grand Banks. The season officially closed on 22 July 1979. During the 1973 season, an estimated 152 icebergs drifted south of 48°N. Table 1 shows monthly estimates of bergs that crossed 48 °N. Table 1 — ESTIMATED NUMBER OF ICEBERGS SOUTH OF LATITUDE 48N, SEASON 1979 1979 TOTAL 1946-1979 AVERAGE 1946-1979 TOTAL 1900-1979 AVERAGE 1900-1979 SEP OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG TOTAL 0 0 0 0 0 5 20 81 34 9 3 0 152 10 2 4 11 64 269 1100 3060 2966 1767 486 100 9839 0 0 0 0 2 8 32 90 87 52 14 3 285 256 109 110 91 184 721 3202 7905 10,049 5285 1682 489 30,083 3 1 1 1 2 9 40 99 126 66 21 6 377 AERIAL ICE RECONNAISSANCE During the 1979 Ice Patrol Season (considered from 1 September 1978 through 31 August 1979) there were 145 aircraft sorties flown in support of International Ice Patrol. These included preseason surveys, ice observation flights and logistic flights. Preseason flights determine iceberg concentra- tions north of 48 °N which are necessary to estimate the time when icebergs will threaten the North Atlantic Shipping Lanes in the vicinity of the Grand Banks. During the active season, ice observation flights map the southwestern, southern and southeastern limits of icebergs. Logistics flights were necessary to rotate ice reconnaissance detachment personnel and for aircraft maintenance. Table 2 shows aircraft utilization during the 1979 season. U.S. Coast Guard C-130 aircraft, deployed from either Coast Guard Air Station Elizabeth City, North Carolina or Clearwater, Florida, conducted the Aerial Ice Reconnaissance. These aircraft operated from St. John's, Newfoundland. Table 2— Aerial Ice Reconnaissance 1 September 1978 to 31 August 1979 Ice Recon Flights Number of flights Number of hours Preseason/ Postseason In Season Logistics Totals 16 116 13 145 66.8 472.2 39.9 578.9 NOTE In season flights include transport of personnel to and from St. John's for normal crew rotation. There were 73 sorties dedicated to ice reconnaissance. Ice Recon Flights Month Flights FEB 2 MAR 16 APR 13 MAY 18 JUN 16 JUL 9 Totals 73 COMMUNICATIONS U.S. Coast Guard Communications Station NMF/NIK Boston, MA was the primary radio station used for the dissemination of the daily ice bulletin and facsimile chart. The Ice Patrol Office in New York prepared the bulletin and chart and sent it to numerous radio stations which broadcast the bulletin to mariners. As in the past, the Ice Patrol Office requested all ships to report ice sightings, weather and sea surface temperatures to U.S. Coast Guard Communications Stations. Response to this request was good as shown in Table 3. The 10 most frequent contributors of this information were: M/V BAKKAFOS/TFXO USCGC EVERGREEN/NRXD M/V KANSAS GETTY/DSOP M/V GEM/5LSU M/V KARA/ 01 VD M/V SUSANNE/5DNU M/V ATLANTIC PREMIER/SFHN M/V STOVE TRADER/LDGS M/V VISEU/YODH M/V WEYROL/HPWO Appendix A lists all contributors. Table 3 Number of ships furnishing SST reports 71 Number of SST reports received 397 Number of ships furnishing ice reports 76 Number of aircraft furnishing ice reports 3 Number of ice reports received 183 First Ice Bulletin 060000Z MAR79 Last Ice Bulletin 220000Z JUL79 ICE & ENVIRONMENTAL CONDITIONS September-December 1978 Figures 1 through 3 illustrate the growth of sea ice during this period. By December ice was as far south as the Strait of Belle Isle and extended 100 miles or more off the Labrador Coast. Iceberg sightings during this period were infrequent with Ice Central Ottawa reporting some icebergs in the waters off the Labrador Coast. Figures 20 through 23 depict surface pressure characteristics that con- tributed to ice formation and movement. During this period conditions were near normal, with predominately westerly winds and no unusual ice conditions noted. January-February 1979 Ice formation continued as shown in figures 4 and 5. By mid-February sea ice extended south as far as Cape Bonavista and out to 50 miles off the coast of Newfoundland. In early February the Ice Patrol conducted the first aerial reconnaissance of the 1979 season. Icebergs were sighted off the Coast of Labrador and by late February icebergs were probably crossing 48°N though there were no reconnaissance flights to verify this until early March. The average surface pressures shown in figures 24 and 25 indicate that a strong northerly flow existed in February creating the ideal condi- tions for moving ice and icebergs south towards the shipping lanes. March 1979 Limited reconnaissance during January and February led to the Ice Patrol conducting a comprehensive survey of the waters off Newfoundland during the first week of March. Icebergs were observed south of 48°N and as a result the Ice Patrol commenced broadcast of ice conditions on 6 March 1979. Figure 13 shows the estimated ice conditions at that time. Sea ice reached its southern limit during this month as seen from figure 6. However, the approaches to the Strait of Belle Isle and St. John's were covered by as much as seven oktas of sea ice. The ice condi- tions for 24 March are shown in figure 14. The average surface pressures for March (figure 26) resulted in predominantly westerly air flow which kept the bergs offshore and ensured their clear passage southward. The estimated number of icebergs crossing 48°N for March was 20. April 1979 April marked the beginning of the sea ice retreat and was also the heaviest single month for icebergs crossing 48°N. An estimated 81 bergs drifted south during this month. Some typical ice condi- tions are shown in figures 7 and 15. It was during April that significant changes in weather patterns occurred that led to prevailing onshore breezes and the drift of icebergs out of the Labrador Current and towards the coast. This resulted in fewer bergs reaching the Grand Banks and a reduced hazard to shipping. Figure 27 shows the average surface pressures and the low pressure system east of Newfoundland that dominated the weather for April. May 1979 The unusual weather patterns of April continued to dominate through May. The weak low pressure system was moved east by a ridge of high pressure as seen in Figure 28. The result was a still per- sistent onshore breeze and a corresponding shoreward drift of ice and icebergs. Sea ice condi- tions are shown in figure 8; iceberg conditions for 1 May and 31 May are shown in figures 16 and 17. These figures show the trend towards shoreward drift and reduced numbers of icebergs that developed during this month. In May an estimated 34 bergs drifted south of 48°N. However, recon- naissance flights north along the coast of Labrador sighted hundreds of icebergs that would have drifted further south if they had not been blown out of the main stream of the Labrador Current. June 1979 By June it was apparent that the iceberg threat to shipping was greatly diminished and that few bergs would drift south towards the Grand Banks. Sea ice drifted no further south than the Labrador Coast and only an estimated nine bergs crossed 48°N. Ice conditions for 12 and 24 June are shown in figures 9 and 18. These show that most of the ice was well north of the major shipping lanes and with the increased water temperatures in that area few bergs were likely to survive the drift south and become a hazard. The average surface pressure shown in figure 29 indicate a return to near normal conditions. The onshore breeze was no longer a predominant force but, as mentioned, the higher water temperatures took over where the breeze left off in preventing southward drift. July-August 1979 July was the last month that Ice Patrol conducted reconnaissance operations; the last flight was made on 19 July with no icebergs sighted in the vicinity of the Grand Banks. An estimated 3 icebergs drifted south of 48°N during July. Sea ice and iceberg conditions for late July are shown in figures 10 and 19. Sea surface pressures are shown in figures 30 and 31. Sea ice conditions for August are in figure 11; the retreat continued as seen in figure 12. Iceberg reports continued to arrive through August but no bergs were noted south of the approaches to the Strait of Belle Isle. As is quite common, icebergs remained in that area and Ice Patrol forwarded all berg reports to Ice Central Ottawa which broadcast the information to North Atlantic mariners. 17 OCT 78 CONCENTRATIONS IN OKTAS Figure 1 14 NOV 78 CONCENTRATIONS IN OKTAS Figure 2 7 1Q DEC 78 CONCENTRATIONS IN OKTAS Figure 3 16 JAN 79 CONCENTRATIONS IN OKTAS Figure 4 Figure 5 10 13MAR7C) CONCENTRATIONS IN OKTAS Figure 6 11 17APRIL79 CONCENTRATIONS IN OKTAS Figure 7 12 15 MAY 79 CONCENTRATIONS IN OKTAS Figure 8 13 CONCENTRATIONS IN OKTAS Figure 9 14 Figure 10 15 Figure 11 16 19 SEP 79 CONCENTRATIONS IN OKTAS Figure 12 17 56? 55° 54° 53° 52° . 51° 50° 49° 48° 47° 46° 45° 44° 43' 52 fr^' 'y y^ ['^"^'j '("^' I '".'J I '-'*i'i ".".n 'J" ' I" '"I " " ' 1 " " '^r'"' I " " ' I " "'I'" " 42° ICE CONDITIONS ▲ BERG FOR 1200 GMT 6MARCH1Q70M GROWLER BASED ON OBSERVED AND X RADAR TARGET FORECAST CONDITIONS. Figure 13 18 SEA ICE CONCENTRATION LESS THAN 6 OKTAS 6 OKTAS OR MORE ^° 47° 46° 45° 44° 43° 42° II I I I I I I I iTrti II I I II I I I I I I I iirii I I 11 rr ICE CONDITIONS A BERG FOR 1200 GMT 24 MARCH 79 BGROWLER BASED ON OBSERVED AND X RADAR TARGET FORECAST CONDITIONS. Figure 14 SEA ICE CONCENTRATION LESS THAN 6 OKTAS 6 OKTAS OR MORE 19 ^Q" 'I' "I Iiii M III I iilii [ 1 I 111 I I il Ii I I II It I I III I I I II 111 I I ill I I II I II I I il r [] nl I Mil lU38 56° 55° 54° 53° 52° 51° 50° 49^ 4 8° 47° 46° 45° 44° 4 3° 42° ICE CONDITIONS ▲ BERG FOR 1200 GMT 06 APR II 7Q ■ GROWLER BASED ON OBSERVED AND X RADAR TARGET FORECAST CONDITIONS. Figure 15 SEA ICE CONCENTRATION LESS THAN 6 OKTAS 6 OKTAS OR MORE 20 ICE CONDITIONS A BERG FOR 1200 GMT 1 MAY 1979 ■ GROWLER BASED ON OBSERVED AND X RADAR TARGET FORECAST CONDITIONS. Figure 16 SEA ICE CONCENTRATION LESS THAN 6 OKTAS 6 OKTAS OR MORE 21 56° 55° 54° 53° 52° 51° 50° 49° 48° 47° 46° 45° 44° 43° 42° ICE CONDITIONS ▲ BERG FOR 1200 GMT _31MAlJ979 ■ GROWLER BASED ON OBSERVED AND X RADAR TARGET FORECAST CONDITIONS. Figure 17 SEA ICE CONCENTRATION LESS THAN 6 OKTAS 6 OKTAS OR MORE 22 56° 55° 54° 53° 52° 51° 50° 49° ICE CONDITIONS ▲ BERG FOR 1200 GMT 24JUNF 79 ■ GROWLER BASED ON OBSERVED AND X RADAR TARGET FORECAST CONDITIONS. Figure 18 23 SEA ICE CONCENTRATION LESS THAN 6 OKTAS 6 OKTAS OR MORE 56° 55° 54° 53° 52° 5 ICE CONDITIONS ▲ BERG FOR 1200 GMT 21 JULY 79 ■ GROWLER BASED ON OBSERVED AND X RADAR TARGET FORECAST CONDITIONS. Figure 19 SEA ICE CONCENTRATION LESS THAN 6 OKTAS 6 OKTAS OR MORE 24 Figure 20 September 1978— Normal and Monthly Average Suface Pressure in MB Figure 21 October 1978— Normal and Monthly Average Suface Pressure in MB 25 N0RnALCl'mfl-n70] NOVEtlBER NOVEMBER nVS Figure 22 November 1978— Normal and Monthly Average Suface Pressure in MB Figure 23 December 1978— Normal and Monthly Average Suface Pressure in MB 26 Figure 24 January 1979— Normal and Monthly Average Suface Pressure in MB "../Kv^ 105D NORHAL :nMfl-iq7D3 FEBRUARV 1012 1006 FEBRUARY n?^ Figure 25 February 1979— Normal and Monthly Average Suface Pressure in MB 27 '102D H NORMAL [lIMfl-llVD] MARCH MARCH nv-l Figure 26 March 1979— Normal and Monthly Average Suface Pressure in MB r3 NORMAL CnMfl-n7D} APRIL APRIL n?^ Figure 27 April 1979— Normal and Monthly Average Suface Pressure in MB 28 Figure 28 May 1979-Normal and Monthly Average Suface Pressure in MB NORMAL [1146-11703 JUNE ^K^f^'^ „\ T y,,,j~y l^ 100^ /_L y/' ^ 1012 " ^^y^ y^ ^"Sr^^..^;f^-^ IDlb ^y 1020 f H JUNE 1171 'J Figure 29 June 1979— Normal and Monthly Average Suface Pressure in MB 29 Figure 30 July 1979— Normal and Monthly Average Suface Pressure in MB Figure 31 August 1979— Normal and Monthly Average Suface Pressure in MB 30 APPENDIX A CONTRIBUTING VESSELS SHIP'S COUNTRY OF NAME REGISTRY Nememcha Algeria Petimata Bulgaria Algonquin Canada Bartlett Canada Breton Shore Canada Federal Avalon Canada Hudson Canada Imperial Arcadia Canada Janie B Canada Kathy C Canada Mare Placido Canada NFLD Cont Canada Nonia Canada Hadan Cyprus Belgium Czechoslovakia Artie Skou Denmark Kara Finland Peter Finland Atlantic Cognac France Denmarch France Anne Marie Krueger Germany Balder Alver Germany Danis Getty Germany Fjellnes Germany Koeln Express Germany Dynamic Sailor Greece E vpo Sailor Greece Irenes Ideal Greece Konkar Indomitable Greece Meltemi 2 Greece Zannis Machlos Greece Tenadores Honduras Bakkafoss Iceland Joekulfell Iceland Selfoss Iceland Skaftafell Iceland Studlafoss Iceland Jayagayatri India Jhanskirani India Loknanya India Samratashok India ICE SST REPORTS REPORTS 1 2 1 1 2 3 1 1 1 3 3 1 1 3 1 1 2 2 1 3 1 2 18 1 1 2 2 3 4 19 5 2 2 1 1 2 4 2 3 52 4 1 1 6 A-1 SHIP'S COUNTRY OF ICE SST NAME REGISTRY REPORTS REPORTS Jordan Kanikolova Indonesia 2 Mezada Israel 2 Adria Maru Japan 6 Miho Maru Japan 1 Teruoku Maru Japan 10 Amax Miner Liberia 2 Artadi Liberia 4 4 Corner Brook Liberia 3 Eastern Hazel Liberia 5 Federal Hudson Liberia 1 Garden Gate Liberia 3 Gem Liberia 3 22 Gemini Pioneer Liberia 2 Kansas Getty Liberia 25 Kathleen Liberia 7 Liberian Albertwill Liberia 2 Lupus Liberia 1 Magic Sun Liberia 1 Navios Courier Liberia 8 Pilot Trader Liberia 1 Ploto Liberia 5 Ralu Liberia 3 Santal Liberia 1 Torrent Liberia 9 Weser Liberia 6 World News Liberia 1 Dryso Norway 1 1 Jacara Norway 2 Norwegian Laurita Norway 1 1 Norwegian Tamesis Norway 3 3 Stove Trader Norway 4 11 Charlotte Bastian Panama 3 4 Discoverer Seven Seas Panama 6 Margitta Panama 1 Weyroc Panama 11 Ammbrow Poland 1 Stefan Batory Poland 10 Zambrze Poland 1 Ziemia Olsztynska Poland 1 Viseu Romania 6 6 Hinrich Oldendorff Singapore 1 Macarena Singapore 1 3 Marques DeBolarque Spain 1 Atlantic Premier Sweden 13 3 Atlantic Saga Sweden 3 3 Atlantic Wasa Sweden 4 5 Ivan Gorthan Sweden 1 Marine Atlantica Sweden 1 Stolt Castle Sweden 1 Susanne Sweden 17 Romandie Switzerland 5 A-2 ICE SST •PORTi ! REPORTS 1 SHIPS COUNTRY OF NAME REGISTRY Silveretta Switzerland Asian Reward United Kingdom Athel Monarch United Kingdom Atlantic Prosper United Kingdom British Wasa United Kingdom Cast Seal United Kingdom 1 C.P. Discoverer United Kingdom 1 C.P. Trader United Kingdom 4 C.P. Voyager United Kingdom 2 Fort Hamilton United Kingdom 5 Kayeson United Kingdom 3 Kildare United Kingdom 6 La Costa United Kingdom 4 La Ensenada United Kingdom 6 Manchester Concept United Kingdom 2 Manchester Concorde United Kingdom 3 2 Manchester Renown United Kingdom 6 Reynoulds United Kingdom 1 Roebuck United Kingdom 1 1 Rubens United Kingdom 1 Salters Gate United Kingdom 1 4 Tsuru Arrow United Kingdom 1 6 W.M. Neal United Kingdom 1 Detroyat USSR 1 Martha Progress USSR 2 Evergreen (USCGC) USA 7 26 Pioneer Crusader USA 1 Sealift Indian Ocean (USNS) . . USA 1 Sealand Galloway USA 1 Westwind (USCGC) USA 3 TOTAL 180 397 A-3 APPENDIX B OCEANOGRAPHIC CONDITIONS LT J. J. MURRAY, U.S. Coast Guard BACKGROUND The 1979 season witnessed significant changes to the Ice Patrol mode of operation. In February 1979 a new computer model to predict the drift of icebergs was accepted as operational by Commander, International Ice Patrol (CUP) and was used throughout the season. The IIP current file used in this model was also updated to include information obtained since its establishment in 1964. Perhaps most significantly, traditional standard oceanographic surveys were replaced with satellite tracked buoys as the primary method of measuring currents and verifying the IIP current file. A NEW ICEBERG DRIFT PREDICTION MODEL During the 1979 ice season a new computer model was used to predict the drift of icebergs. The drift model, termed IBERG, was developed at the Coast Guard Oceanographic Unit during the fall of 1977, and was tested during the 1978 ice season. The model was then integrated into the opera- tional Ice Patrol system and accepted for operational use in February 1979. IBERG forecasts the drift of an iceberg by solv- ing differential equations of motion that express the forces acting on the iceberg. The forces included are the Coriolis force, the wind drag, the water drag, and a gravitational component due to the slope of the sea surface. The equations are solved by a fourth order Runge-Kutta method using a variable time step to insure a convergent solution. The primary improvement over past modeling efforts is in the calculation of the water drag, which is usually the dominant forcing term. The water drag is proportional to the iceberg cross- sectional area and the square of the velocity of the ice relative to the water. The water current used is the sum of a mean value and a wind driven compo- nent that is derived from a solution to a time dependent Ekman equation using a 96 hour wind history. The average Ekman current in each of four layers of the water column is determined. The water drag in each layer is calculated and the results are summed to yield the total drag over the iceberg. This approach allows different sizes of icebergs to be modeled by varying the cross- sectional area in each layer. Small icebergs float in the near surface layer which is strongly affected by the local wind, while large icebergs have much of their area below the wind-influenced layers. Seven iceberg sizes are allowed in the operational form of IBERG. A continuing evaluation of IBERG is being conducted. Observed iceberg drift tracks are compared to model generated paths to estimate the model accuracy. Initial results suggest that the primary limitation to accurate forecasts lies in the inputs to the model, most notably the current and wind fields used in the drag calculations. IIP CURRENTS The IIP current file extends from 40°N to 52°N and from 39 °W to 57° W. Within this area are two regions. The currents are best known in the first region in the proximity of the Labrador Current where standard oceanographic surveys were conducted under the auspices of CUP every season from 1934 to 1978 (except during World War II). Usually 2 or 3 surveys were made each season. These surveys yielded a large data base which was used in 1964 (Soule, 1964) to compile "normal" dynamic topography charts representing the average dynamic heights observed up to that time. From these charts normal geostrophic velocities were calculated. The normal values are useful because the general oceanic circulation in the Ice Patrol area is similar from year to year. The normals were reviewed and updated in 1976 (Scobie and Schultz, 1976) and it is basically these updated currents which were used during the 1979 season. The second region is composed of all other B-1 currents within the IIP current file. They were compiled by CUP from various sources constituting a much lower quality data base then that used for the first region. Contained in Appendix A is a hsting of the 1979 IIP current file. The current direction in degrees true and the speed in cm/ s (51 cm/ s = 1 knot) are listed for every 20 "minutes of latitude and longitude except in the vicinity of the Labrador Current where the longitude spacing is 10 minutes. This finer grid encompasses all of region 1 and a small part of region 2. Region 1 currents in Appen- dix A are indicated by asterisks (*). There was only one current file for the entire 1979 season as opposed to four files which were previously used, one each for April, May, June and July. It was felt that monthly variation of currents within a given season was not large enough to warrant more than one IIP current file. SATELLITE TRACKED BUOYS The Oceanographic Unit began examining the feasibility of using satellite tracked drifting buoys to measure currents as early as 1975. In 1976, 1977, and 1978 satellite tracked buoy transmitting terminals (BTT's) were deployed in the Ice Patrol area and tracked using the NIMBUS-6 satellite system. Positions obtained were analyzed to deter- mine currents. The results of these tests were so successful that the Oceanographic Unit presented a position paper at the 1978 IIP Planning Con- ference stating that BTT's could replace standard oceanographic surveys as the method for gather- ing current information to evaluate the IIP cur- rents. This idea was accepted by CUP and 1979 became the first season since 1948 during which no oceanographic surveys were made by a Coast Guard vessel in support of IIP operations. The satellite system used during the 1979 Ice Patrol season was TIROS-N. When the satellite is within sight of a BTT it records the data being transmitted on 416.65 MHz. This information is processed and encoded by the TIROS information processor and retransmitted almost instantane- ously on the spacecraft beacon frequency, 136.77 MHz. The ground receiving station and the BTT must both be within line of sight of the satellite for this retransmission to be received at the ground station. In the fall of 1978 a prototype Local User Terminal (LUT) was established at the Oceanographic Unit to allow relatively independ- ent and near real-time data reception. It is capable of receiving the transmissions of both the NIMBUS-6 and TIROS-N satellites and processing them to obtain position and sensor data. With its present location in Washington, D.C., in the TIROS-N mode the LUT normally receives infor- mation from 2 satellite passes daily with the capability of locating BTT's anywhere within the IIP area. The maximum accuracy of the system with the incorporation of adequate reference beacons is about ±3 km (1.6 nautical miles). The cornerstone of the new current measuring scheme is the BTT's themselves. All BTT's used are in what is called the TIROS Oceanographic Drifter (TOD) configuration (Figure 1). This includes the basic buoy, window shade drogue, the drogue sensor, temperature sensor and battery monitor. The drogue extends from about 12 to 24 m below the sea surface and is designed to reduce buoy leeway as much as possible. The temperature sensor is accurate to within + 1.0°C and provides valuable sea surface temperature data. During the 1979 season all BTT's were air deployed from Coast Guard HC-130 aircraft (although they can be ship deployed) utilizing a special air deployment package (Figures 1 and 2). The system is designed so that the BTT on a pallet is slid out the rear cargo door of the aircraft and parachutes to the sea surface. Water-activated explosive cutters cut away the parachute, and the specially designed hardware connecting the pallet to the BTT dissolves causing the pallet to fall away and the drogue to deploy. The entire process normally takes only a few minutes. 1979 OPERATIONS During the 1979 season 5 BTT's were deployed in support of IIP operations (Table 1). Three BTT's, 2605, 2600 and 2604, were deployed in the Labrador Current, BTT 2601 was deployed to the east of the Labrador Current and BTT 2602 was deployed northeast of Flemish Cap. All 5 BTT's functioned well throughout the season. A total downtime of 18 days (7.7% of the season) was experienced on the LUT due largely to its developmental nature. Accuracy of positions was not as good as the 3 km normally attainable because of inadequacy of reference platforms. However, comparison of BTT positions with reported deployment positions and known locations of relatively swift moving currents such as the Labrador Current indicated positions were within ±10 km. Exact errors could not be determined. B-2 The purpose of deploying BTT's was to make current measurements to compare with the IIP current file. To do this BTT positions were first input to a computer program utilizing a cubic spline routine to smooth out the drifts. The program calculated a smooth trajectory by ensuring a mathematically continuous first derivative of the BTT displacement versus time plot, thus velocity, and a minimum second derivative, thus acceleration or potential energy. It then output a printout of 6-hourly BTT positions and velocities (Table 2) and a plot of the smooth BTT trajectory (Figures 3-7) representing an approximation of the path the BTT followed. On these plots X's represent input positions, not all of which are marked, and numbers are Julian dates. To make valid comparisons with the IIP cur- rents, the wind current's contribution must be removed from the BTT drifts. Another program, a modified version of IBERG, used CIIP wind files to calculate wind currents using the same Ekman equation described earlier. The actual comparison of observed drifts and IIP currents was accomplished by a third program (Table 3). It computed 6-hourly observed currents with the wind current subtracted out (BTT w/o W.C.) and then vectorially subtracted the IIP (normal) current from this value. The difference was output in individual and cumulative speed and direction and U (east-west) and V (north-south) components on a printout and plots. The results were then analyzed to determine what if any changes in the current file were warranted. Magnitudes of differences, variability of currents in the respec- tive location, time of season and reliability of measurements were among the items taken into account. No changes to the IIP current file were made during the 1979 season. REVIEW AND OUTLOOK The validity of the concept of using satellite tracked BTT's to measure currents was proven during the 1979 season. Even though the system was in its fledgling stages, it worked well enough to determine if changes to the IIP current file were necessary. Programs developed to analyze the BTT drifts proved adequate. Much was learned about the capabilities and limitations of the system. Several refinements are planned for the 1980 season but the general overall operational scheme will remain the same. Perhaps most significantly, since the end of the 1979 season a second satellite in the TIROS series, NOAA-6, has been launched and is opera- tional. It will provide additional positions and thereby even more accurate evaluation of IIP currents. Additionally, several reference beacons have been procured for use to ensure maximum accuracy is obtained. Overall, during 1979 the satellite tracked buoy system provided more accurate and much more timely current measurements at a reduced cost as compared to the old survey method. With the system still developing the prospects for the future appear even brighter. REFERENCES Scobie, R. W. and R. H. Schultz (1976). Oceanography of the Grand Banks Region, March 1971-December 1972. U.S. Coast Guard Oceanographic Report No. 70, Coast Guard 373-70:47. Soule, F. M. (1964). The Normal Topography of the Labrador Current and its Environs in the Vicinity of the Grand Banks of Newfoundland during the Iceberg Season. Woods Hole Oceanographic Institution, Ref. No. 64-36. Buoy ID 2605 2602 2600 2601 2604 Date 01 March 05 April 12 May 04 June 04 June Table 1- BTT DATA Deployment Latitude Longitude Positions /Temperatures Supplied Total Per Week 49-00.6 49-57.6 49-38.0 46-42.0 48-59.4 49-54.0 47-12.0 46-18.0 47-12.0 47.06.0 87 68 52 35 34 4 4 5 5 5 NOTE: Latitude and Longitude are in degrees-minutes. 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C X i^ rvj 0 ►- S cr • X • a • »- Z a: -* \ • a: • h- z a vC V • a • g >- r> I— ( in :» -C LiJ X >- ~ 1— t • 3- 0 UJ (VJ t- ~ »— t • 3: r^ UJ ro OD *• T u. X IX 0 Q in 0 U- «— 1 -t-> t— * t- ^H U. »— « ~* f- (\J ti. (VJ •* 1— u. •— 1 C -* »— ►-4 -» r-t t- I—* St r— t 1— »— 4 £ o CD 0 0 X C2 0 cr Q fc vC T cc cc -f rr cr -£■ -* (VI 3 (VJ c (\j ~* -* fM 0 in CO -* (Vi Q (VJ 0 (VJ 0 z UJ • • • T UJ -* • • ^ UJ 0 • • D liJ rvj ■— * -c D UJ • f^ -* 31 UJ • ro r-t Ph (_) 1/1 '^ »^ 0 a in rvj (VJ •— ' 0 0. I/) r^ tVJ '% tc h- n f— 1 r^ -» >» •t -» c 0 C/3 a: • • • or • • • cc • • • 1— t IT c cc •— « rn (^ -4- »— X l~- c o •* 0 -» -* 0 -* <3- »— 1 0 o O « CC c r^ in OJ 0 0- (V ro UJ (VJ •* -* UJ •— I d c UJ in (V r>- 0 1 UJ • • • UJ • • • UJ • • • a OJ W-* >c a n (V T a 1— t 0- vC 1 I/) f— » 1/1 X ^^ tf) i— 1 CO i »- in »- in ■* h- 0 0 H 2. IT rw 5 i/i • -* 2 1/1 • ro 3 ►— t ~ •-4 *— 1 • ^ »— 1 m • O Q W > 1 0 0 U Q CD U. a. 0 > (_■ 0 vO t- :> (VJ 1 (VI (V (/) U- 1— 1 3 • 1- in • =) • (V) 1— (/> • u. t— 1 z> • 1—* a »-< w-i *-< ^H (Z Q Q C Q Q LU o or (V) • u 0 d Z 0 z (i 0 • (Vj UJ 0 -J Z a in • z o tr c in z 0 >* z 0 a Q (VJ >— » (\J 0 •— t •-I X *"* HH 0 0 ^H »- •-4 z 0 - -* Uj • >- -♦ • > in bJ • < >c a in < >c >♦ « i _o "a Q pq I cJ ro lO — o M > O S 5^ S !2 «- V 2"T K ^2- CVJ ro lO O to o Q I B-9 50»W 49" 48« 47* 46» 1 — \ — r BUOY ID 2600 45"'W 50«W 49» 48» 47« 46« 45»W Figure 5. -Drift of BTT 02600. B-10 o CO O Q I B-ll CO 3: lO 1 1 » ^ CO CM X ^ ^*" CO 1 X 1 o> ^ X r ID 2604 .X 173 X / i \ V "^'^'^^ 5> CB ^ ^^^— — xx-x^\ _ S3 1 1 o (M o H 5 lO B-12 APPENDIX A IIP CURRENTS LAT LONG 52.00 52.00 *1.2n 41.00 ll'J 116 DIR SPO 52.00 52.00 40.40 40.20 TTS" 116 52.00 52.00 40.00 3". 40 116 116 IS Ts" 15 15 15 LIT 52.00 LONG S7.00 0 spn n 52.00 52.00 39.20 39.00 116 116 IS IS 52.00 52.00 56.40 56.20 0 0 0 0 51.40 51.40 57.00 56.40 0 0 0 0 52.00 52.00 56.00 55.40 0 0 0 n 51.40 51.40 56.20 56.00 0 0 0 0 ■^2.00 52.00 5';.20 55.00 0 160 0 23 51.40 51.40 55.40 55.20 0 0 0 0 ^2.00 52.00 54.40 54.20 160 160 23 23 51.40 51.40 55.00 54.40 IhO 160 23 23 52.00 52.00 54.0 0 53.40 160 160 23 23 51.40 51.40 54.20 54.00 160 160 23 23 52.00 53.20 53.00 160 IhO 23 23 51.40 51.40 S3. 40 53.20 160 160 23 23 52.00 52.00 52.40 52.20 160 160 23 23 51.40 51.40 ■-3.00 52.40 160 160 23 23 =;2.oo 52.00 5?. 00 51.40 160 IhO 23 23 51.40 51.40 52.20 52.00 l60 160 23 23 «;?.oo 52.00 "^1.20 "^1.00 50.40 50.20 IhO 16 II 15H 169 ?3 ft9 64 37 51.4ft 51.40 si. 40 51.20 loO 160 23 23 52.00 52.00 51.40 51.40 51.00 50.40 1S9 16U 74 69 52.00 52.00 50.00 4S.5n 16V Ihv 37 37 51.40 51.40 50.20 50.00 170 170 4? 42 =i2.00 52.00 4^.31 44./0 49.10 1"^ lr,9 ^7 37 ?1.40 51.40 4'i.5A 49.40 170 170 45 4? Si?. 0 0 52.00 16^ 37 37 51.40 51.40 49. JO 49.20 1 '0 170 4>' 4? Si!, on 52.00 44.00 4n.5(' isy 169 J7 37 51.40 51.40 49.10 49.00 1 ro 170 4? 4? 52.00 52.00 48.40 4«.30 16« 172 35 35 51.40 51.40 4fl.'^0 4B.40 17n ls9 42 4 0 52.00 52.00 46.20 4S.10 llO IHO 34 34 51.40 51.40 4H. JO 48.20 173 180 39 39 52.00 52.00 4H.00 47.50 160 IHO 34 34 51.40 51.40 48.10 4fi.0O 180 180 41 41 52.00 47.40 47.30 I'iO I^IO ^4 34 51.40 51.40 47. SO 47.40 lAO 180 41 39 5i!.00 52.00 47.20 47.10 IrtO lyo 34 34 51.40 51.40 47.30 47.20 lao 190 39 37 52.00 52.00 4/. 00 46.50 i«a 1 Td 34 35 51.40 51.40 47.10 47.00 180 180 37 37 52.00 52.00 46.40 46.30 168 168 35 35 51.40 51.40 46. =10 46.40 172 189 37 37 52.00 52.00 46.20 46.10 16H 165 35 36 51.40 51.40 46.30 46.20 169 169 jr 37 52.00 52.00 46.00 45.40 161 161 36 36 C1.40 51.40 46.10 46.00 16S 161 3a 36 52.00 52.00 4?.?0 45.00 US 140 3S 36 «;i.4o 51.40 45.40 45.20 150 140 37 36 52.00 52.00 44.40 44.20 l40 140 36 51.40 51.40 45.00 44.40 129 129 36 36 57.00 52.00 44.00 43.40 129 129 3'S 3h 51.40 51.40 44.20 44.00 129 129 36 36 ■^2.00 52.00 4T.20 43.00 12-i 129 3f. 3'> 51.40 51.40 43.40 43.20 n'5 119 37 37 52.00 52.00 42.40 42.20 1?« 118 29 29 51.40 51.40 43.00 42.40 121 118 35 29 52.00 52.0 0 42.00 41.40 118 119 29 Ifl 51.40 51.40 42.20 42.00 IIH 119 29 18 NOTE: LAT LONG ARE IN DEGREES. MINUTES. B-13 LAT LONG DIR SPD 51.40 51.40 41 .<*n 41.20 1 l-J 116 1^ 15 51.20 51.20 42.00 41.40 97 97 1« IR 51.40 51.40 51.40 51.40 41.00 40.40 40.20 40.00 ins 14 14 51.20 51.20 41.20 41.00 9H 99 1 ilrt 1 D'l 14 14 51.20 51.20 40.40 40.20 99 99 14 14 14 14 51.40 51.40 39.40 39.^0 1 n^i 108 14 14 51.20 51.20 40.00 39.40 99 99 14 14 51.40 51.20 39.00 5 7.00 0 14 0 51.20 51.20 39.20 39.00 99 99 14 14 51.20 51.20 56.<.0 56.21 51.00 51.00 ^17. 00 56.40 51.20 51.20 51.20 51.20 56.0 0 55.40 55.20 55.00 0 J "160"" 160 23 23 51.20 51.20 1^4.40 54.20 160 160 23 ?3 5l.?0 51.20 S4.00 53.40 16(1 IhO 23 23 51.20 51.20 53. 2n 53.00 160 160 23 23 51.20 51.20 S2.40 52.20 160 IhO 23 23 51. SO 51.20 '-2. 00 51.40 16. J 160 23 23 51.20 51.20 si. 20 51.00 160 Ifaii 23 76 51.20 50.41 ls9 74 51.00 51.00 56.20 56.00 0 0 0 n 51.00 51.00 55.40 55.20 0 160 0 23 51.00 51.00 55.00 54.40 161 160 23 23 "51.00 51.00 54.20 54.00 160 160 23 23 51.00 51.00 53.40 53.20 160 160 23 23 51.00 53.00 160 23 51 .00 52.41 160 51.ort 51.00 5^.?n 52.00 160 160 23 51.20 51. ?0 51.20 50.20 5i.no 51.00 51.41 51.20 "r6Tr 160 170 42 5i.no 51.00 51.00 50. "iO 160 "TTTTnr 51.00 "^1.20 50.00 TTT 171 23 23 23 76 ■^0.00 49.50 "49.40 49.30 170 170 45 42 TTTT 170 4' 51. no 51. on "rrr 171 44 44 51.20 51.20 51.20 51.20 51.20 51.20 51.20 ■5l.2fl 51.20 51.20 51.20 51.20 51.20 51.20 51.20 51.20" 51.20 51.20" 49.20" 49. 10 49.50 49.40 "TTTT 170 "ZTF" 42 " 51.00 51.00 49.31 49.20 "rrr 171 "TTTT 171 4 9.10 49.0 0 "TTT 171 "5^" 44 "i«~ 44 49.00 48. bO 4fl.4n 48.30 4fl.20 45.11 42 42 SI. on 51.00 "Pr9- 173 160 51.00 51.00 51.00 51.00 ~rrr 171 -mr 171 4* 44 39 "TT" 41 4H.sn *fl.41 4H.30 48.20 "zr5" 44 48.00 47.50 47.40 47.30 47.20 47.10 InO 18U 41 41 =;i.oo 51.00 4R.10 48.00 ISO "pnr lao TTfD" 180 "3^ 39 "T7" 37 T5~ 41 51.00 51.00 4?. SO 47.40 IbO 180 37 51. no 51.00 47.30 47.20 180 180 34 51.20 5i.?n 51.20 51.20 51.20 51.20 51 .20 51.20 51.20 SI. 20 51.20 51.20 51.20 47.00 46. bO "46.40 46.30 IMO 172 "1'69~ 165 37 37 38 51.00 "ST-.inr 51.00 47.11 47.00 TrtTT iMO 46.50" 46.41 ~rT2" 168 46.21 46.10 ~r6T" 164 140 "r?g" 119 "JS" 3H 36 51.00 51.00 46.31 46.21 T"55" 160 ""?4~ 34 "T5" 35 "7?r 34 "T6~ 35 46.00 45.40 45.20 45.00 51.00 51.00 46.11 46.00 T6T- 148 37 51. nn 51.00 45.40 45.20 "T4B- 137 "Ts" 34 44.21 ~IT9" 119 37 51.00 51.00 45. on 44.41 TJT" 129 "3^ 36 44.00 43.40 43.20 43. on 42.40 42.20 TTT" 100 37 51.00 51.00 44.20 44.00 T2T- 109 ":ts" 34 100 1011 "T7" 37 51.00 51.00 43.40" 43.20 "HT^ 101 ":3'«" 35 "9«r 98 "Sir- 30 51.00 51 .00 43. on 42.40 "9B" 97 "37r 18 B-14 LAT LONG DIR SPD 51.00 51.00 4?. 20 4?. on 97 97 IR 18 50.40 50.40 42.40 42.20 97 97 Ifl 18 i^l.OO 51.00 41.40 41.20 99 99 14 14 50.40 50.40 42.00 41.40 90 90 20 13 51.00 51.00 41.00 40. »n 99 99 14 14 50.40 50.40 41.20 41.00 90 90 13 13 51.00 51.00 40.20 40.00 99 99 14 14 50.40 50.40 40.40 40.20 90 -*0 13 13 51.00 51.00 3^^.40 39.20 99 99 14 14 50.40 50.40 40.00 39.40 90 90 13 13 51.00 50.40 39.00 57.00 99 0 14 0 50.40 50.40 39.20 39.00 90 90 13 13 50. *0 50.40 5ft. 40 0 0 0 0 50.20 50.20 57.00 56. -jO 0 0 0 0 50.40 50.40 56.00 55.40 55.20 55.00 0 160 160 160 0 23 23 23 50.20 50.20 56.20 56.00 0 0 0 0 50.40 50.40 50.20 50.20 55.40 55.20 160 160 23 23 50.40 50.40 54.40 54.20 160 160 23 23 50.20 50.20 55.00 54.40 160 160 23 23 50.40 50.40 ■=^4.00 53.40 53.20 53.00 160 160 160 160 23 23 23 23 50.20 50.20 54.20 54.00 160 160 23 23 50 .40 50.40 50.20 50.20 53.40 53.20 160 160 23 23 50.40 50.40 52.40 52.20 52.00 51.40 51.20 51.00 16(1 160 l6fl 160 ■ 160 160 23 23 23 23 23 23 50.20 50.20 53.00 52.40 160 160 23 23 50.40 50.40 50.20 50.20 52.20 52.00 IbO 160 23 23 50.40 50.40 50.20 50.20 51.40 51.20 160 160 23 23 t,0.40 50.40 50.<»1 50.20 50.00 49.50 49.40 49,30 149 160 135 135 135 115 7H 76 3? 32 32 32 50.20 50.20 51. 00 50.40 160 150 J3 80 50.40 50.40 50.40 50.20 50.20 50.20 50.20 SO. 20 50.00 49.50 49.40 15U 135 135 135 HO 32 32 32 50.40 50.40 4^0 0 0 SO.OO 50.00 39.20 39.00 78 78 23 23 50.00 50.00 56. '.O 56.20 0 0 0 n 49.40 49.40 S7.00 56.40 0 0 0 0 50.00 50.00 56.00 55.40 0 0 0 0 49.40 49.40 ''6.20 56.00 n 0 n 0 SO.OO 50.00 55.20 55.00 0 160 0 23 49.40 49.40 SS.20 55.40 0 0 0 0 50.00 S4.40 160 23 49.40 SS.OO 0 0 50.00 54.20 160 23 49.40 54.40 0 0 50.00 S4.no 160 23 49.40 S4.20 0 0 50.00 53.40 160 23 49.40 54.00 1^9 39 50.00 S3.2n 160 23 49.40 S3. 40 149 45 50.00 53.00 ^l_60 23 49.40 53. 2n 159 59 50.00 52.40 160 23 49.40 53.00 Yh^ 5^ 50.00 52.20 160 23 49.40 52.40 160 23 50.00 sPTno TM) 23 49.40 5?.?o T^TJ ?1 50.00 51.40 160 23 49.40 52.00 160 23 50.00 si.2fi r60 23 40.46 =1.40 r5T5 TS 50.00 51. on 160 23 49.40 51.20 160 23 ~5U.OO ^^WViTi rei3 ZJ 49.40 TTVWn T^Ti ?T 50.00 50.20 ISO HO* 49.40 50.40 160 23^ 50.00 "^Tirn P=T3 r^JT* 49.40 50.20 T^TJ SO 50.00 49. Sn 113 33 * 49.40 SO. On ISO Mn SO. 00 49.40 nrs tt'* iij.^o 49.50 nrs so~*~ 50.00 49.30 1(19 34* 49.40 49.40 103 IS* 50.00 49. 2n rHi5 Jf^r^g 49.40 49.30 if^ 17 » 50.00 49.10 137 42 49.40 49.20 166 31# 50.00 49.00 Tip? rS""^ 49.40 49.10 m ^TS^T 50.00 4H.50 12 2? * 49.40 4°. no 170 45 ^ 50.00 4«.4n I 27r* 49.40 STST'Tn 94 4~ 50.00 48.30 0 10 * 49. 4n 48.40 2 14 50.00 4B.20 Z IT* 49.40 4H.3n 3^7 V?^' 50.00 4H.10 351 15* 49.40 48. 2n 358 s* 50.00 siTTTro 3^^ rr:;;^ 49.40 4s.in j^2 «nf- 50.00 47.50 349 3_^ 49.40 48.00 340 13* 50.00 47.40 TTh T^ 49.40 47.^0 T4T! T^^ 50.00 47. 3n 127 6 * 49.4" 47.40 322 9 50.00 47.20 " rT3 8"* 49.40 47.30 ZS^ Tr^^ 50.00 47.10 -ll 14 * 49.40 47.20 1 in* 50.00 47.00 711 ?4~* -49.4 0 47. 10 B 2^* 50.00 46.50 59 37 * 49.40 47.00 10 36* 50.00 46.40 33 ?6~^^ 49.40 46. bn TI S-i* 50.00 46.30 13 64 49.41 46. 4n 5 19* 50.00 46.20 T5? VT^ 49.40 46.30 2^^ 9^ 50.00 46.10 2?6 18 * 49.40 46.20 227 26„ 50.00 STfiTirO 23B T^r* 49.40 46.10 ZTl TT^ 50.00 45. 4n 231 33 * 49.40 46.00 220 35* 50.00 46. ?n TP^ I8~* 49.40 45.40 ?I^ Tr*~ 50.00 45.00 0 0 * 49.40 45.20 198 22* 50.00 44.40 171 3? ' 49.40 45.00 0 IT»~ 50.00 44.20 9« 32 49.40 44.40 171 32 50.00 44.00 9p 77 49.40 44.20 9TJ J5 50.00 43.40 98 32 49.40 44.00 90 34 B-16 LAT LONG DIR SPO 49.40 49.40 4 3.40 43.20 90 90 30 30 49.20 49.20 44.00 43.40 79 ai 37 30 49.40 49.40 43.00 42.40 VO 90 30 20 49.20 49.20 43.20 43.00 81 81 30 30 49.40 49.40 42.20 i2.00 40 90 20 20 49.20 49.20 42.40 42.20 82 b2 18 18 49.40 49.40 41.40 41.20 ^0 90 20 20 49.20 49.20 42.00 41.40 H2 82 18 18 49.40 41. on -^2 1» 49.20 41. 2n 82 18 49.40 40.40 12 18 49.20 41.00 82 18 ~i,q.40 40.20 82 \A 49.20 40.40 H2 18 49.40 40.00 »3 21 49.20 40.20 82 18_ 49.41) 39.40 78 23 49.20 40.00 ►'2 ]H 49.40 39. 2n 78 23 49.20 39.40 78 23 4^.40 39Tnn TB 23 49.20 39.20 78 23 49.20 57.00 0 0 49.20 39.00 7a ?3 49.20 '^6.40 0 0 49.00 ^-7.00 0 0 49.20 5^.20 0 0 49.00 56.40 0 0_ 49.20 ^TToTi 0 n 49.00 1^6.20 0 o~ 49.20 55.40 0 0 49.00 S6.00 0 0 49.20 49.20 49.00 48.50 137 99 v.* 49.20 49.20 48.40 48.30 80 62 14 * 7 * 49.20 48.20 6 4 * 49.20 5ST20 0 0 49.00 55.40 0 0 49.20 55.00 0 0 49.00 55.20 0 0 ~4Tr?0 57471^0 0 0 49.00 55.00 0 0 49.20 54.20 0 n 49.00 54.40 0 n_ 49.20 '~4.nn 0 0 49.00 54.20 0 0~ 49.20 53.40 0 0 49.00 54.00 0 0_ ~^972"(5" 53.21 rv5 45 49.00 53.40 5 (T 49.20 53.00 160 49 49.00 53.20 149 45 49.'?0 £=7740 160 ?1 49.00 53.00 TSO 5^~ 49.20 52.20 IMi 23 49.00 52.40 160 49 49.20 ^TFTOO 160 23 49.00 '-2. 20 TM) TT 49.20 51.40 155 34 * 49.00 52.00 160 23 49.20 '^1.20 I?« ITT^^ 49.00 51.40 TZH 2T*" 49.20 51.00 'JO 15 49.00 51.20 122 29* 49.20 =^0.40 UPi Zir^ "49.00 51,00 177 2? ^ 49.20 50.20 in 30 * 49.00 50.40 1_25 16 ^ 49.20 50.00 m 80 * 49.00 SO. 20 \^ 14 49.20 49.50 157 80 * 49.00 50.00 150 80 * 49.20 49.40 T^Ti m~* 49.20 49.30 173 37 ^ 49.20 49.20 PTI 36^^ 49.20 49.10 170 30 j^ 49.00 49.20 140 33 » 49.00 49. 10 136 36 \^ 49.00 49.00 126 31 49.00 49.00 49.50 49.40 153 153 80 * SO * 49.0 0 49.30 144 26 * " 49.00 48.50 TPi 2«^ 49.00 48.40 142 25 * 49.00 48.30 r5B TT*- 49.20 48.10 2 3j^ 49.00 48.20 153 11 * 49.20 48.00 24 V^ 49,00 48.10 TS 6^;^ 49.20 47.50 237 2. 49.00 48.00 2 5 ^ 49.20 47.40 T20" T* 49.00 47. SO 3B ?^ 49.20 47.30 330 14* 49.00 47.40 25 7 ^ 49.20 47.20 3^r2 VfT* 49.00 47.30 U r?r*~ 49.20 47.10 342 18 * 49.00 47.20 355 7 * 49.20 47.00 3T7 IT* 49.00 47.10 ?F? 5"^*^ 49.20 '_^1^^} ^li 21 » 49.20 <»6.40 m 25 ^ 49.20 46.30 256 26^ 49.00 47.00 286 9 * 49.00 49.00 46.50 46.40 294 275 10 * •s * 49.00 46.30 240 1ft « 4~5T?]3 46.20 249 23 49.20 46. 1" 246 20 * 49.00 46.20 219 14 " 49.20 46.00 246 15"^* 49.00 46.10 TTH 16 4*^.20 45.40 200 2? * 49.00 46.00 236 11 * 49.20 45. 20 2T0 rr* 49.00 45.40 TBS W^^ 49.20 45.00 0 0 ,# 49.00 45.20 108 22* ■^"9770 5*7?o T?y, 76 49.00 S^TTTO 57 20 ^ 49.20 44.20 90 37 49.00 44.40 90 37 B-17 LAT LONG DIR SPD 49.00 49.00 44,20 44,00 90 79 37 37 48.40 48.40 44.40 44.20 100 90 37 37 49.00 49.00 4:1. 4n 43.20 79 79 37 37 48.40 48.40 44.00 43.40 79 69 37 39 41.00 49.00 43. on 4?.4f1 69 68 39 25 48.40 48.40 43.20 43.00 59 59 40 40 49.00 49.00 42. 2n 42. on 68 68 25 25 48.40 48.40 42.40 42.20 61 60 29 23 49.00 49.00 41.40 41.20 79 79 26 48,40 48,40 42.00 41.40 68 71 25 29 4«.00 49.00 41.00 40. 4n 79 h2 26 18 48,40 48.40 41.20 41.00 71 81 29 30 49.00 49.00 40.20 40.00 ■*2 82 1« 18 4H.40 48.40 40,40 40,20 32 82 IH 18 49.00 49.00 39. 4n 39.20 79 79 26 26 48.40 48.40 40,00 39,40 HZ 81 1« 30 49.00 48.40 39,00 57,00 79 0 26 0 4H.40 4H.40 39,20 39.00 81 81 30 30 48.40 48.40 S6.4n 56,20 U 0 0 0 48.20 48,20 '^7.00 56.40 0 0 0 0 48.40 48.40 ^6,00 55,40 0 0 0 0 48,20 48,20 S6.20 56.00 0 0 0 0 48.40 48,40 55,20 55,00 0 0 n 0 48,20 48,20 55.40 55.20 0 0 n 0 48.40 48.40 54.40 54.20 0 0 0 48,20 48,20 55,00 54.40 54.20 54.00 0 0 0 0 0 0 0 0 48.40 48.40 ■=•4.00 53. 4n 0 0 n 0 48,20 48,20 48.40 48.4(1 ■^3.20 53.00 0 0 39 48.20 48.20 53.40 53.20 0 0 0 0 48.40 48.40 ■=2.40 52.20 160 169 49 49 48.20 48.20 S3. 00 52.40 139 160 39 49 48.40 48.40 52.00 51.40 1«0 115 4« 14 * 4H.2n 4S.20 S2.20 52.00 169 180 49 48 48.40 4«,40 si. 20 51.00 134 113 ?1 * 48.20 48.20 SI. 4ft 51.20 180 IHO 13 2 * 48,40 48,40 SO. 40 50.20 115 122 30 33 * 48. ?0 48.20 sl.Oo 50.40 116 117 5 * 17 * ■ 48,40 48.40 50.00 49.50 127 130 3=; 80 * 48.20 48,20 sn.20 50.00 11 r 104 24 # 2«* 48.40 48.40 49.40 49.30 132 135 8 0 8 0 * * 48,20 48.20 49,50 49.4 0 101 118 44 * h 48.40 48.40 49.20 49,10 134 129 29 23 * * 48. ?0 48,20 49.30 49,20 130 131 S7 * 61 * 48.40 48,40 49,00 48,50 141 154 25 30 * 48,20 48,20 49,10 49.00 48. '-0 48.40 130 128 124 121 57 * 48,40 48,40 48,40 48,30 158 151 29 26 * 4H,20 48.20 48,40 48,40 48.20 48.10 135 115 21 16 * » 48.20 48,20 48.30 48.20 48.10 48.00 117 103 93 100 4S 41* ^*iy* 40* 48,40 48.40 48,00 47.50 101 84 12 8 * 4B,20 48,20 48.40 48.40 47,40 47,30 4l 46 5 6 * 48,20 48,20 47.50 47.40 108 105 43* 41* 46.40 48.40 47. ?0 47.10 198 185 1 6 * 48.20 48.20 4^.30 47.20 98 98 34* 28 48.40 48.40 47.00 46.50 186 326 3 1 * * 48.20 48.20 47.10 47.00 100 96 22* 48,40 48,40 46.40 46,30 251 1m9 1 3 * 48.211 48.20 46.50 46.40 9J 102 15* 48.40 48.40 46,20 46.10 46,00 45.40 99 /9 12 3 5 * 48,20 48.20 46.30 46.20 111 89 12-i^- 8* 48.40 48,40 21 4H.20 48.20 46.10 46.00 11* 115 9* 48.40 48,40 45.20 45,00 4J 76 22 22 ■# * 48.21) 48.20 45,40 45.20 60 1 20* B-18 LAT LONG DIR SPD 48.20 48.20 45.00 44.40 24 100 20 * 37 48.00 48.00 45.20 45.00 17 137 16 # 34 48.20 48.20 44.20 44.00 ■^0 79 37 37 48.00 48.00 44.40 44.20 109 90 34 34 48.20 48.20 43.40 43.20 70 70 42 4? 48.00 48.00 44.00 43.40 71 50 29 36 48.20 48.20 48.20 48.20 48.20 48.20 43.00 42.40 40.20 40.00 39.40 39.20 70 ol H2 82 78 78 42 29 48.00 43.20 50 36 48.00 43.00 50 36 48.20 46.20 42.20 42.00 ^0 60 23 23 48.00 48.00 42.40 42.20 61 29 29 48.20 46.20 41.40 41.20 *.l ^1 29 29 48.00 48.00 42.00 41.40 s 1 71 29 29 48.20 48.20 41.00 40.40 •-1 82 30 18 48.00 48.00 41.20 41.00 71 71 29 29 18 18 48.00 48.00 40.40 40.20 66 66 35 35 48.00 48.00 40.00 39.40 66 77 17 17 17 21 48.20 48.00 48.00 48.00 48.00 48.00 39. on 57.00 =-6.40 56.20 ^'-670'r 55. ■♦O 78 0 0 48.00 48.00 39.20 39.00 77 77 47.40 47.40 ■^7.00 56.40 47.40 47.40 47.40 4 7.40 56.20 56.00 21 21 46.00 48.00 48.00 "4flT(ro" 48,00 ss.2n 5^.0n_^ ~K4'.4Tr 54.20 ^^^TOTT 53.40 55.40 55.20 47.40 47.40 55.00 54.40 47.40 47.40 54.20 54.00 48.00 48.00 48.00 4a.0Tr 48. 00 ■^3.20 53.00 "^?.47r 52.20 -27T57V- 51 .40 0 0 T7T~ 169 190 220 47.46 47.40 S3. 40 53.20 ~f4~ 49 23 "47.40 47.40 ^■3.00 52.40 IT 169 47.40 47.40 52.20 52.00 lAO 199 4n 49 48.00 48.00 48.00 48.00 40.00 48.00 SI. 20 51.00 "^0T4(r 50.20 ""=ro".0 0~ 49.50 20 6 206 "T=rr 169 104 1% 10 10 * 7 * 47.40 47.40 = 1.40 51.20 199 188 47.40 47.40 si. 00 50.40 171 7* 47.40 47.40 50.20 50.00 "T25" 302 23 23 "2T" 48.00 48.00 48.00 4A.00 48.00 49.40 49.30 49.20 49.10 49.T(r- 48.50 13rt 139 122 119 10 17 *_ 47,40 47.40 49.50 49.40 185 194 "26 35* 49 * 47.40 4 7.40 47.40" 47.40 49.30 49.20 49.10 49.00 243 24H 223 12 * 9* 4H.00 48.00 48.00" 48.00 48.00 48.00 48.00 48.40 48.30 114 108 "4flT2Tr" 48.10 "*87TrO"" 47.50 47.40 47.30 47.20 47.10 47.00^ 46.50 T04" lul ^"^6" 95 ToT- 123 132 nr 156 52 * 47.4!) 4 7.40 57 47.40 47.40 48.50 48.40 48.30 48.20 TSF" 95 ""BT" 110 5'^ 50* 49 * 52* 47.40 47.40 48.10 48.00 47. ?0 47.40 143 "T46- 151 ToT" 171 7* "^?Tt-" 10 * 47.40 47.40 32 T6^ 44* 48.00 48.00 ^48.00 48.00 48.00 48.00 48.o;r 48.00 48 * 39* 47.40 47.40 47.30 47.20 24 47.10 47.00 TTB" 181 44« 44* 47.40 47.40 T8r 176 48.00 48.00 46.40 46.30 "4ST20" 46.10 171 182 "2TD" 343 46.00 45.40 "75^ 44 22 18 * — 4"ir- 47.40 47.40 46.50 46.40 47.40 47.40 46.30 46.20 97 47.40 47.40 46.10 46.00 "45" 43 35* 26 jj "r5t- 20* 6 * 13* B-19 LAT LONG DIR SPO 47.40 47.40 45.40 45.20 68 113 14 ♦ ♦ 7.20. ♦ 7.20 ♦4.00 ♦ 5.^0 33 »9 19* ?* 47.40 47.40 4S.00 44.40 149 120 3? 3? ♦ 7.20 ♦7.20 ♦S.20 ♦5. go 28 323 5 * 8* 47.40 47.40 44.20 44.00 9t 3? 3? ♦ 7.20 ♦7.20 ♦♦.♦0 ♦♦.20 140 131 18 24 47.40 47.40 43.40 43.20 59 4H 32 31 ♦ 7.20 ♦ 7.20 ♦ 4.00 43.40 90 52 27 26 47.40 47.40 43.00 42.40 •-0 50 ^3 33 ♦ 7.20 ♦ 7.20 43.20 ♦ 3.00 41 37 24 26 47.40 47.40 42.^0 42.00 ■^0 50 33 33 ♦ 7.20 ♦ 7.20 42.40 42.20 39 39 3^^ 36 47.40 47.40 41.40 41.20 4r< 4rt 24 24 ♦ 7.20 ♦ 7.20 42.00 41.40 39 41 36 24 47.40 47.40 41.00 40.40 4q 49 24 21 47.20 47.20 41.20 41.00 41 41 24 24 47.40 47.40 40.20 40.00 '•O 60 1« 18 47.20 47.20 40.40 40.20 40 40 21 21 47.40 47.40 39.40 31*. 20 60 60 23 23 47.20 47.20 40.00 39.40 44 48 21 24 47.40 47. ?0 39.00 S7.00 60 0 23 n 47.20 47.20 39.20 39.00 4*< 48 24 24 47. ?0 47.20 S6.40 S6.2n 0 0 0 0 47.00 47.00 57.00 56.40 0 0 0 0 47.20 47.20 ■^b.OO 55.40 0 0 0 0 47.00 47.00 56.20 56.00 0 0 ft 0 47.20 47.20 S5.20 55.00 0 0 0 0 47.00 47.00 55.40 55.20 0 0 0 ft 47.20 47.20 S4.40 54.20 0 0 0 0 47.00 47.00 55.00 54.40 0 0 0 0 47.20 47.20 '-4. 00 53. wO u 0 0 0 47.00 47.00 S4.20 54.00 0 0 0 0 47.20 47.20 ^-3.20 53.00 0 0 ft 0 47.0ft 47.00 53.40 53.20 0 0 0 0 47.20 47.20 ^•2.40 52.20 ?01 199 44 49 47.00 47.00 =.3.00 52.40 0 209 0 47 47.20 47.20 •-2.00 51.40 199 199 49 23 47.00 47.00 52.20 52.00 210 199 51 49 47.20 47.20 Si. 20 51.00 180 23 23 47.00 47.00 <1.4ft 51.20 191 IHO 23 23 47.20 47.20 50.40 50.20 169 169 21 23 " 4^.00 47.00 51.00 50.40 180 lr»0 23 23 47.20 47.20 50.00 49.50 231 241 n * 47.00 47.00 s6.2ft 50.00 169 169 23 23 47.20 47.20 49.40 49.30 187 151 fl « 14^ 47.00 47.00 49 188 23 23 46.40 46.40 4SI.20 49.10 188 188 23 23 46.20 46.20 49.30 49.20 193 198 23 23 46.40 46.40 49.00 48.50 217 155 12* 12* 46.20 46.20 49.10 49.00 198 184 23 46.40 46.40 48.40 48.30 110 57 1^* 46.20 46.20 4fl.50 48.40 214 270 6 4 * 46.40 48.20 SO 1 46.20 48, 3n 296 7 * 46.40 46.40 46.40 46.40 46.40 48.10 48.00 47.50 47.40 47.30 ?13 303 "179" 185 6" — 5*" 2* 65 » 46.20 46.20 46.20 46.20 46.20 48.20 48.10 48.00 47.50 47.40 233 243 208 5 * 3 *_ 47.30 47.20 47.10 47.00 '♦6.50 46.40 202 201 "T95" 186 "T53- 75 103 * 80 * 34 * 46.40 46.40 46.40 46.40 46.40 46.40 47.20 47.10 ^47700" 46.50 46.40 46.30 192 2D0 201 "T9^ 321 88^ 94 . -79" 38^ "nr»" 0* 46.20 46.20 46.20 46.20 46.20 46.20 U * 9» B-21 LAT LONG DIR SPD 46.20 46.20 46.30 46.20 5b 61 1** 17^ 46.00 46.00 46.40 46.30 68 * 50 # 15 16 46.20 46.20 46.10 46.00 76 115 16* 46.00 46.00 46.20 46.10 *3 * 14 12 46.20 46.20 4=^.40 45.20 122 82 15* 17* 46.00 46.00 46.00 45.40 99 * 88 * 1? 20 46.20 46.20 45.00 44.40 64 63 23 * 32 » 46.00 46.00 45.20 45.00 70 * 67 * 24 21 46.20 46.20 44.20 44.00 79 67 26 30 46.00 46.00 44.40 44.20 18 * 68 46 25 46.20 46.2(1 43.40 43.2" ^7 71 30 36 46.00 46.00 44.00 43.40 71 68 29 32 46.20 46.20 43.00 42.40 h9 47 39 46.00 46.00 43.20 43.00 f-9 70 39 42 46.20 46.20 42.20 42.0 0 59 •39 40 40 46.0 0 46.00 42.40 42.20 69 69 39 39 46.20 46.20 41.40 41.20 58 58 35 35 46.00 46.00 42.00 41.40 71 68 29 25 4f..20 46.20 41.00 40.40 60 29 18 46.00 46.00 41.2" 41.00 68 60 2=; 23 4h.20 46.20 40.20 40.00 49 49 21 21 46.00 46.00 40.40 40.20 60 60 18 18 46.20 46.20 3'?.40 39.20 '=1 51 14 14 46.00 46.00 40.00 39.40 49 51 21 14 46.20 46.00 3i.40 49.30 198 204 23 23 45.40 45.40 49.50 49.40 225 218 23 23 23 12 # 46.00 46.00 49.20 49.10 208 209 23 23 45.40 45.40 49.30 49.20 219 177 46.00 46.00 49.00 48.50 183 178 10 11 -li- 45.40 45.40 49.10 49.00 137 164 17 * 1"* 46.00 46.00 48.40 48.30 166 43 4* 3 * 4';. 40 45.40 48.50 48.40 171 222 y 46.00 46.00 48.20 48.10 177 208 1* 45.40 45.40 48.30 48.20 237 226 23 " 63* 46.00 46.00 48.00 47.50 215 217 70 45.40 45.40 48.10 48.00 222 219 87 * 92* 46.00 46.00 47.40 47.30 213 208 96 * 98 * 45.40 45.40 47.50 47.40 217 215 59* 38^ 46.00 46.00 47.20 47.10 209 229 43 * 8 * 4b. 40 45.40 4/. JO 47.20 195 86 46.00 46.00 47.00 46.50 64 82 6* 12 ^ 45. 4U 45.40 4^.10 47.00 5b 41 16* 17* B-22 LAT LONG DIR SPO 45.40 45.40 46.50 46.40 45 75 16 12. it 45.20 45.20 47.00 46.60 73 75 22* 20 * 45.40 45.40 46.30 46.20 109 87 10 : 5 * 45.20 45.20 46.40 46.30 94 113 16 * 17 * 45.40 45.40 46.10 46.00 17 14 6 6' * 45.20 45.20 46.20 46.10 111 97 17 * 14 . 45.40 45.40 45.40 45.20 44 79 10 ■ 12 45.20 45.20 46.00 45.40 74 33 »: 45.40 45.40 45.00 44.40 59 63 18* ■J9* 45.20 45.20 45.20 45.00 51 40 23 " 38 * 45.40 45.40 44.20 44.00 68 71 25 29 45.20 45.20 44.40 44.20 5 68 45 * 25 4=>.40 45.40 43.40 43.2(1 ^7 70 30 34 45.20 45.20 44.00 43.40 70 71 27 29 45.40 45.40 43.00 42.40 42.20 42.00 68 71 37 22 45.20 45.20 43.20 43.00 67 68 30 32 45.40 45.40 71 H2 2? 18 45.20 45.20 42.40 42.20 71 77 22 21 45.40 45.40 41.40 41.20 82 18 18 45.20 45.20 42.00 41.40 82 82 18 18 45.40 45.40 41.00 40.40 69 60 19 18 45.20 45.20 41.20 41.00 82 69 18 19 4S.40 45.40 40.20 40.00 60 50 18 18 45.20 45.20 40.40 40.20 69 60 19 18 45.40 45.40 39.40 39.20 51 51 l4 14 45.20 45.20 40.00 39.40 60 51 18 14 45.40 45.20 39.00 57.00 Si 259 14 49 45.20 45.20 3<».20 39.00 51 51 14 14 45.20 45.20 56.40 56.20 259 259 49 23 45.00 45.00 57.00 56.40 259 259 49 49 45.20 45.20 56.00 55.40 2'^9 259 23 23 45.00 45.00 56.20 56.00 259 259 49 23 45.20 45.20 55.20 55.00 259 259 23 23 45.00 45.00 55.40 55.20 259 259 23 23 45.20 45.20 54.40 54.20 250 ?40 23 23 45.00 45.00 55.00 54.40 259 250 23 23 45.20 45.20 =^4.00 53.40 221 221 23 23 45.00 45.00 S4.20 54.00 240 218 23 23 45.20 45.20 53.20 53.00 52.40 52.20 52.00 51.40 218 220 23 23 45.00 45.00 53.40 53.20 220 220 23 23 45.20 45.20 219 219 23 23 45.00 45.00 53.00 52.40 220 219 23 23 45.26 45.20 219 208 23 23 45.00 45.00 52.20 52.00 208 208 23 23 45.20 45.20 51.20 51.00 20-J 209 23 23 45.00 45.00 51.40 51.20 209 209 23 23 45.20 45.20 50.40 50.20 209 209 23 23 45.00 45.00 51.00 50.40 209 208 23 23 45.20 45.20 50.00 49.50 209 213 23 23 45.00 45.00 50.20 50.00 210 208 23 23 45.20 45.20 49.40 49.30 219 220 23 23 * 45.00 45.00 49.50 49.40 209 230 ?3 # 'A* 45.20 45.20 49.10 178 134 4 1 * 45.00 45.00 49.30 49.20 141 144 13 4 * 45.20 45.20 49.00 48.50 173 195 17 42 * 45.00 45.00 49.10 49.00 167 193 9 * 50 * 45.20 45.20 48.40 48.30 206 211 40 106 * * 45.00 45.00 48.50 48.40 194 198 115 * 108 * 45.20 45.20 48.20 48.10 221 232 68 43 * 45.00 45.00 48.30 48.20 198 1H2 48 ^, 1* * 45.20 45.20 48.00 47.50 24 32 28 21 ~?6" 28 30 44.20 44.20 44.20 44.20 4n 161 169 36 3 7 43.20 43.20 52.00 51.40 254 6 6 * 7 * 43.00 43.00 52.20 52.00 169 195 37 9 * 43.20 43.20 51.20 51.00 343 34 18 * 6 # 43.00 43.00 ■^1.40 51.20 219 296 22 * 25 * 43.20 43.20 50.40 50.20 86 8» 43.00 43.00 51.00 50.40 304 266 34 * 43. ?0 43.20 50.00 49.50 15"^ 195 7 * 43.00 43.00 50.20 50.00 262 241 4^ 43.20 43.20 49.40 49.30 218 213 27 * 51 * 43.00 43.00 49.50 49.40 227 221 53 * 59 * 43.20 43.20 49.20 49.10 208 202 84 * 60 * 43.00 43.00 49.30 49.20 21b 210 54 * 37 * 43.20 43.20 4^.00 4B.50 195 203 3 ^ 43.00 43.00 49.10 49.00 201 143 18 * 43. 20 43.20 4H.'.41 46.31 27 30 91 " 76* 43.00 43.00 46.11 46.00 4'^. 40 45.20 4S.00 44.40 ->3 160 74 to MO 63" 64* 42.40 42.40 4f^.2n 46.10 28 40 77 * 72* 43.00 43.00 33* 52 54 54 42.40 42.40 46.00 45.40 95 69 56* 52 43.00 43.00 42.40 42.40 4"=.. 20 45.00 79 79 5? 5? 43. on 43.no 44.20 44.00 9 0 40 55 42.40 42.40 44.40 44.20 40 91 48 48 43.00 43.00 43.40 43.20 90 4U 48 46 42.40 42.40 44.00 43.41 90 40 4« 44 43.00 43.00 43.00 42.41 98 100 44 40 42.40 42.40 43.21 43. ni 99 99 42 42 43.00 43.00 4?. 20 42.00 100 100 41 40 42.40 42.40 42.40 42.40 42.41 42.20 42.00 41.41 98 98 98 lOB 30 30 31 36 43.00 43.00 41.40 41.20 41.00 40.41 101 101 100 ion 3S 35 37 41 43.00 43.00 42.40 4 2.4(1 41.20 41.00 108 108 36 36 43.00 43.00 40.20 40.00 3«.40 3>J.20 loo 40 91 90 40 30 23 23 42.40 42.40 40.40 40.20 104 109 42 42 43.00 43.00 42.40 42.40 40.00 39.41 10 9 111 4? 25 43.00 42.40 3<5.00 57.00 90 149 23 41 42.40 42.40 39.20 39.00 HI 111 2=; 25 42.40 42.40 •.6.41 56.21 144 159 41 39 42.20 42.20 '-7. 00 56.41 120 120 41 41 4^.40 42.40 =^6.00 55.40 i=;9 159 39 39 42.20 42.20 56.20 56.00 130 130 42 4? 42.40 42.40 5S.20 55.01 164 170 40 4? 42.20 42.20 55.40 55.20 141 141 44 44 42.40 42.40 ^4.40 54.21 170 170 4? 42 4?.2o 42.20 ■=-■=.. on 54.41 54.20 54.0 0 ^^3.40 53.20 14l 149 149 149 134 139 44 45 45 45 4? 42 4;^. 40 42.40 S4.00 53.40 160 42 42 42.20 42.20 -TIZ.20 42.20 42.40 42.40 5J.20 53.00 ISU 139 4? 42 42.40 42.40 ^?.4i 52.20 130 119 4? " 42 * 42.20 42.20 ■=•3.00 52.40 130 120 42 45 42.40 42.40 52.00 51.41 ■^1.21 51.00 196 144 256 2&3 11 * 4* ^1* 42.20 42.20 52.20 52. no 110 63 47 42.40 42.40 42.21 42.20 ■^1.41 51.21 124 131 *^* 42.40 42.40 ''0.40 50.20 2'^7 248 36 * 42.20 42.20 =;i.oo 51.40 1^2 192 Ifl 12* 42.40 42.40 50.01 4Q.50 235 236 47 * 40 * 42.20 42.20 50.20 50.00 1^5 128 13* 13* 42.40 42.4 0 44.40 44.30 247 2?H 25 » 12 * 42.20 42.20 49.51 49.41 93 ■*2 18* ?4* 42.40 42. »0 44.21 49.11 320 86 3* 42.20 42.20 415. 3n 49.20 77 74 ^^* 2*. 42.40 42.40 49.00 4B.50 79 59 ^ 42.20 42.20 49.10 49.00 70 66 22 22* 42.40 42.40 4H.40 48.31 40 31 13-" 18* 42.20 42.20 48.50 48.40 63 59 24* 27* B-27 LAT LONG DIR SPD 42.20 42.20 49.30 48.20 52 45 30 ^, 42.00 42.00 48.40 48.30 66 58 21 * 15* 42.20 42.20 48.10 48.00 40 28 33 31* 42.00 42.00 4fl.20 48.10 36 358 13* 12 42.20 42.20 47.50 47.40 12 359 30 * 30 * 42.00 42.00 48.00 47.50 20 25 7 8* 42.20 42.20 42.20 42.20 47.30 47.20 47. in 47.00 14 * 45 # 42.00 42.00 ft"^. 42.00 42.00 47.40 47.30 4?. 20 47.10 2sTr 46 * 60* 7n J, 42.20 42.20 46. SO 46.40 88' 42.00 42.00 47.00 46.50 64 * 71 * 8? 4? 42.20 42.20 42.20 42.20 46. 3n 46.20 46. n 46.00 1 < 1* 42.00 42.00 42.00 42.00 42.00 42.00 46.40 46.30 46.20 46.10 3'^6 ? 101 ^ Q-i * ^1* 17* 42.20 42.20 4'^.40 45.21 69 78 79; 6?: 9 324 S2 47 4*^.00 45.40 304 60 42.00 42.00 42.00 42.00 42.no 42.00 4=.2o 45.00 "70" 70 90 90 38* 4? 42.20 42.20 4'^.00 44.40 78 >J0 47 44 4? 4? 42.20 42.20 42.20 42.20 44.20 44.00 90 90 41 41 44.40 44.20 44.00 43.40 41 39 ~Tr 34 30 TfT 29 ~2 49 * 41 * 9? * 41.40 41.40 47.30 47.20 46 32 7l^ 26 6 41.40 41.40 47.10 47.00 "2T" 18 90" 83* S4* 47 41.20 41.20 47.20 47.10 34 83 97 * 44 A. 41.40 41.40 41.40 41.40 41.40 46.40 46.40 "56.30 46.20 46.10 46.00 19 60 58 "ST 60 "STT 60 41.20 41.20 47.00 46.50 69 69 ~4T" 49 41.20 41.20 46.40 46.30 71 64 45 42 37 "35" 36 "T^ 34 "T4~ 35 "3^ 30 30 41.20 41.20 4l.20 4 1.20 41.20 41.20 "STTTT 41.20 41.20 41.20 46.20 46.10 60 59 47 47 44 43 42 40 41.40 41.40 41.40 41 .40 41.40 41.40 4^.40 45.20 45.00 44.40 44.20 44. 00 "^B" 71 "^7B" ^0 101 46.00 45.40 45.20 45.00 60 59 "67" 51 44.40 44.20 44.00 43.40 43.20 43.00 50 "~6F" 90 Tirr 109 37 32 29 29 TT 33 "32" 32 "3^ 41.40 41.40 "5^1.40 41.40 41.40" 41.40 43.40 43.20 4 3.00 42.40 4?. 20" 42.00 "nrr 90 "TTT 9^1 41.20 41.20 41.20 41.20 4l.?rt 41.20 41.20 41.20 41.20 41.20 41.20 41.20 "51.20 41.20 41.00 41.00 41.00 41.00 41.00 42.40 42.20 42.00 41.40 41.20 41.00 40.40 40.20 109 109 Tinr 111 "rrr 119 "m" 131 TTT 119 "rrg- 119 79 79 ~~?nr •41 90 "4T- 49 "T9" 25 "2^ 23 "2T" 24 41.40 41.40 41.40 41.40 41.40 41.2" "41.0 0 40.40 TTT ll-^- 131 23 "7T" 24 "25" 18 41.40 41.40 4 0 . d n 40.00 119 TPT 119 41.40 41.40 39.40 39.20 15 18 39 40.00 39.40 39.20 39.00 ^^7.00 56.40 "^^7?o- 56.00 q=;.4o 55.20 55.00 54.40 24 18 "TH- 18 "STT 40 44 "48" 48 55 41.40 41.20 39.00 57.00 ""0" 90 41.20 41.20 "^6.40 56.20 "^JTT 90 ":tt 39 41.20 41.20 "TeTinr 55.40 90 41 44 "^TT 48 55.20 55.00 ~9T" 90 41.00 41.00" 41.00 41.00 41.00 41.00 41.00 41.00 41.00 41.00 41.00 41.00 41.00 41.00 41.00 41.00 90 "9Tr 90 "97r 90 "9Tr 90 "9Tr 90 90 "9Tr 90 "97r 90 54.40 54.20 "9Tr 90 "TR" 48 41. ?0 41 .20 41. 2U 41.20 54.00 53.40 53.00 90 "9Tr 90 48 46 ^4B" 51 ^4.20 54.00 ?3.40 53.20 53.00 52.40 '-■?..2t\ 52.00 51.40 51.20 51.00 50.40 50.20 50.00 49.50 49.40 49.30 S8 60 55 55 "^ 58 "'i^ 58 "5^; — 53 fl2* 61 * 59 * 61 * Til. 20 41. ?0 52.40 52.20 >^0 "5T" 55 "55" 55 41.20 41.20 ??.00 51.40 "97r 90 41.20 41.20 41.20 41.20 51.20 51.00 50.40 50.20 ""9Tr 110 "TO 2" 51 "=fa 65 * "iTS^ 47^ 41.20 41.20 50.00 49.50 "715" 94 68 62' 41.00 41.00 41.00 41.00 41.00 57 "r27" 147 "TST" 159 41.20 41.20 49.40 49.30 "TOF" 103 "sr^ 45* ^Til.20 41.20 49. 2n 49. 10 "TD"*" 106 40* 49.20 30 B-29 LAT LONG DIR SPD 41.00 41.00 49.10 49.00 171 185 28* SI* 40.40 40.40 49.20 49.10 90 90 51 51 41.00 41.00 48.50 48.40 90 90 ''I 51 40.40 40.40 49.00 48.50 90 90 48 48 41.00 41.00 43.30 4fl.20 90 90 51 51 40.40 40.40 48.40 48.30 90 9U 48 46 41.00 41.00 48.10 48.00 H4 78 49 47 40.40 40.40 48.20 48.10 90 90 44 44 41.00 41.00 47,50 47.40 78 81 47 44 40.40 40.40 48.00 47.50 90 90 41 41 41.00 41.00 47.30 47.20 HI 80 44 4? 40.40 40.40 47.40 47.30 90 90 41 39 41.00 41.00 47.10 47.00 80 80 42 42 40.40 40.40 47.20 47.10 90 B2 37 37 41.00 41.00 4f<.4n 79 79 40 37 40.40 40.40 47.00 46.50 78 78 35 3"^ 4l.no 41.00 4f).30 46. ?o 75 71 38 36 40.40 40.40 46.40 46.30 78 74 35 33 4i.no 4i.no 4h. in 46. nn >33 58 36 35 40.40 40.40 46.20 4*^.10 67 '^3 30 31 41. OO 41.00 4"^. 40 45. 2n 59 61 3? 29 40.40 40.40 46. on 45.40 59 61 32 29 -fl.OO 41.00 4^.on 44.40 51 61 29 29 40.40 40.40 45.20 45. on 48 29 24 la 41.00 41.00 44.20 44. 00 3m 'il 29 JO 46.40 40.40 44.40 44. 2n 8 6 16 16 4i.no 41.00 43. 4n 43.20 112 30 30 40.40 40.40 44.00 43.40 18 36 14 23 41.00 *l.no 43.00 4?. 40 9- 102 3n 21 40.40 40.40 43.20 43.00 60 '1 23 22 41.00 41.00 42.20 42.00 OO ^0 20 20 40.40 40.40 42.40 42.20 77 WO 21 20 41 .uu 41.00 4TT4T1 41.20 97 97 18 18 4U.4U 40.40 42. UO 41.40 uu ^0 11 41 .UU 41.00 41.00 40. 4n ll'J 119 19 18 40.40 40.40 41.20 41.00 90 101 11 n 41.00 41.00 40.20 40.00 ll9 119 18 18 40.40 40.40 40.40 40.20 111 12^^ 12 11 41.0" 41.00 39.40 39.20 116 116 IS 15 40.40 40.40 40.00 39.40 126 126 11 n 41.00 40.40 39.00 57.00 116 81 44 40.40 40.40 39.20 3-3.00 ill HI 12 12 40.40 40.40 56.40 56.20 78 79 47 49 46. ?0 40.20 ?7.0o ■=•6.40 7 62 40.20 40.20 51.00 50.40 ^0 90 62 62 40.40 40.40 bU.UU 49.50 90 90 55 55 40.20 40.20 50.20 50.00 9U 90 62 60 4U.4U 40.40 49.40 49.30 90 b3 53 40.20 40.20 4 9.50 49.40 9U 90 55 B-30 LAT LONG DIR SPD 40.20 40.20 4q.3n 4'i.20 40 ^0 ^3 ■^1 40.00 40.00 40. 4n 4^.30 49.20 49.10 90 90 48 4B 40.20 40.20 49.00 90 9n bl 4P 40.00 40.00 90 90 48 48 40.20 40.20 48.50 4H.. ?0 T?0" 120 "13T" l-^o 27 21 40.00 40.00 46.20 4ft. 10 119 119 40.00 40.00 4^.00 4'^.'»0 119 131 5S.20 SS.OO ^5474:0- S4.20 ^47TrO" S3. 40 HO 80 "T9 79 "90" 40 58 58 63 27 2ft 23 23 23 24 40. ?1 40.20 45.0 0 44.40 347 23 21 40.00 40.00 45.20 45.0 0 15U 167 23 21 40.20 40.20 44.20 44.00 0 4 - 20 21 40.00 40.00 44.40 44.20 3S1 0 16 1ft 4^.-2 0"" <*0.20 43.20 44 21 23 40.00 40.00 44.00 43.40 0 11 1ft 23 40. ?0 40.20 43.00 42.4" ftM 78 25 23 40.00 40.00 43.20 43.00 l8 24 22 23 40.20 40.20 42.20 ".2.0 0 JO -0 20 20 40.00 40.00 42.40 42.20 40 4 4 21 21 40.20 40.20 41.40 41.20 -li'i ■Ml 11 11 40.00 40.00 4?. 00 41 .".O 60 -.8 23 12 40.20 40.20 41.00 40 .40 li'l Ml 11 11 40.00 40.00 41.20 41.00 78 '•0 11 11 40.20 •40.20 40.20 40.00 111 111 1? 12 40.00 40.00 40.40 40.20 4 0 101 U 11 40.20 40.20 39.40 39.20 101 101 11 11 40.00 40.00 40.00 39.40 101 101 U 11 46.20 40.00 3'i.OO 57.00 lol 70 11 54 40.00 40.00 34.20 3^^.00 10 1 101 n 11 40.00 40.00 56.40 ■^6.20 80 64 58 0.00 0.00 999 0 40.00 40.00 56.00 55.40 8 0 80 58 58 40.00 40.00 "40.00 40.00 ~5TT7(nr 40.00 '=;3.2o 53.00 "55.40^ =^2.20 "4ir 40 "55- 65 40 "90" 4 0 "55 65 ■ft-T ft? 40.00 40.00 ""4ir70^0~ 40.00 "40.00 40.00 ^1.00 "57747r 50.20 40 4 0 "TiO" 40 6? 62 "6?" 62 50.00 49.50 40 "5^ 53 B-31 *U. S. G. P. 0. 720-625/1302-42