586

PHYSICS OF THE AIR

independent, so far as known, of variations in the intensity of direct radiation.

The number of stations was still further limited by the available recent data. Hence the records finally selected, and kindly put in shape by the Climatological Division of the United States Weather Bureau, P. C. Day in charge, were obtained at the following places:

TABLE II.—STATIONS WHOSE DATA WERE USED America

Name

Latitude

Longitude

Elevation in feet

Baker Oregon ................

44° 46' N.

117° 50' W.

3,466

Bismarck North. Dakota .........

46° 47' N.

100° 38' W.

1,674

Cheyenne Wyoming ..............

41° 08' N.

104° 48' W.

6,088

Denver Colorado ......................

39° 45' N.

105° 00' W.

5,291

Dodge City Iowa .........

37° 45' N.

100° 00' W.

2/509

El Paso Texas ..............

31° 47' N.

106° 30' W.

3,762

Helena, Montana .....................

46° 34' N.

112° 04' W.

4,110

Huron Michigan ..........

44° 21' N.

98° 14' W.

1,306

North Platte Nebraska ................

41° 08' N.

100° 45' W.

2,821

Red Bluff California ......

40° 10' N.

122° 15' W.

332

Sacramento California ..........

38° 35' N.

121° 30' W.

69

Salt Lake City, Utah ............. : ......

40° 46' N.

111° 54' W.

4,360

San Antonio Texas

29° 27' N.

98° 28' W.

701

Santa F6 New Mexico ...........

35° 41' N.

105° 57' W.

7,013

Spokane, Washington ...................

47° 40' N.

117° 25' W.

1,929

Winnemucca, Nevada . .

40° 58' N

117° 43' W.

4,344

Yuma, Arizona .......................

32° 45' N.

114° 36' W.

141

       

Europe

Mont Ventoux .................

44° 10' N

5° 16' E

6 234

Obir .................................

46° 30' N

14° 29' E

6 716

Pic du Midi ..................

42° 56' N

0° 8' E

9 380

Puy de D6me ......................

45° 46' N'

2° 57' E

4 813

Santis ...............................

47° 15' N

9° 20' E

8 202

Schneekoppe .................

50° 44' N

15° 44' E

5 359

Sonnblick ..........................

47° 3' N

12° 57' E

10 190

       

India

Simla ........................

31°

6'

N

77° 1

2' E

7

232

               

In Table III, the first column gives the year in question. The second column gives the average departure in degrees Fahrenheit, for the seventeen American stations, of the annual average maximum, as determined from the monthly average maxima, from the normal annual