1919 - 20 .] 
The Daily Temperature Curve. 101 
Table IV. — c 0 and the Constants of Integration. 
Day Curves. 
Night Curves. 
c 0 . 
c v 
c 2 . 
Cq. 
c r 
c 2 . 
January ..... 
40*15 
-1*35 
0*00 
37*28 
+ 1*81 
+ 2*87 
February .... 
40*26 
1*60 
0*00 
36*34 
3*26 
3*92 
March 
4088 
2*00 
+ 0*05 
35*38 
5*44 
5*50 
April 
44*06 
2*55 
0*14 
36*57 
8*05 
7*49 
May 
46*94 
2*00 
0*11 
39*68 
8*67 
7*26 
June ..... 
51*55 
1*53 
0*07 
45*02 
7*94 
6*53 
July ..... 
54*73 
1*40 
+ 0*07 
49*17 
6*43 
5*56 
August ..... 
55*00 
1*10 
0*00 
49*83 
5*52 
5*17 
September .... 
53*21 
1*75 
0*00 
47*08 
6*03 
6*13 
October ..... 
48*65 
2*05 
0*00 
43*31 
4*38 
5*34 
November .... 
44*06 
1*95 
0*00 
40*08 
2*48 
3*98 
December .... 
41*49 
-2*00 
0*00 
37*65 
+ 2*30 
+ 3*84 
Table V. — Observed Temperatures minus Calculated Temperatures. 
Unit = 0° -01 F. 
t 
Jan. 
Feb. 
Mar. 
Apr. 
May. 
June. 
July. 
Aug. 
Sept. 
Oct. 
Nov. 
Dec. 
-11 
0 
0 
- 2 
- 2 
- 1 
+ 1 
0 
+ 
5 
+ 
5 
+ 
2 
+ 3 
0 
10 
+ 1 
0 
- 2 
- 3 
- 1 
0 
0 
+ 
7 
+ 
6 
+ 
1 
+ 5 
- 3 
9 
- 1 
- 
1 
- 2 
0 
+ 2 
-30 
0 
- 
2 
+ 
2 
0 
0 
- 4 
8 
- 4 
- 
3 
- 1 
+ 3 
-50 
+ 3 
-34 
10 
- 
3 
- 
1 
- 4 
- 6 
7 
- 4 

3 
+ 2 
-49 
+ 6 
+ 32 
+ 12 
_ 
1 

5 
1 
2 
— 5 
- 4 
6 
+ 2 
+ 
3 
+ 15 
+ 2 
+ 14 
+ 14 
+ 9 
+ 
7 
- 
5 
+ 
2 
- 2 
+ 2 
5 
+ 9 
+ 15 
+ 19 
+ 1 
+ 12 
- 1 
+ 7 
- 
9 
+ 
3 
0 
+ 3 
+ 11 
4 
- 2 
+ 
5 
+ 4 
+ 3 
- 2 
- 6 
+ 5 
- 
8 
- 
3 
+ 
8 
0 
+ 22 
3 
- 8 
- 
4 
- 6 
+ 2 
-18 
- 7 
0 
- 
2 
0 
- 
5 
- 3 
- 1 
2 
- 6 
_ 
8 
- 5 
- 1 
-23 
- 9 
- 6 
+ 
2 
+ 
1 
_ 
4 
- 4 
0 
- 1 
+ 3 
- 
3 
- 1 
- 3 
-19 
-10 
-12 
+ 
2 
+ 
1 
+ 
3 
0 
+ 3 
Noon 
+ 9 
+ 
3 
+ 1 
- 3 
-16 
- 8 
- 9 
+ 
3 
- 
1 
+ 
6 
+ 5 
+ 6 
1 
+ 12 
+ 
4 
- 1 
- 4 
-12 
- 3 
- 5 
+ 
6 
+ 
2 
+ 
5 
+ 6 
+ 7 
2 
+ 6 
- 
1 
- 4 
- 3 
- 3 
+ 3 
0 
+ 
5 
- 
1 
- 
2 
+ 4 
+ 2 
3 
- 2 
— 
8 
- 5 
- 2 
+ 7 
+ 9 
+ 4 
+ 
1 
— 
5 
— 
3 
- 5 
-16 
4 
-10 
- 
7 
- 2 
+ 1 
+ 15 
+ 11 
+ 8 
- 
4 
0 
11 
- 7 
+ 3 
5 
- 1 
+ 
3 
+ 2 
+ 8 
+ 19 
+ 6 
+ 5 
- 
2 
- 
2 
+ 
4 
-12 
+ 2 
6 
+ 1 
- 
3 
+ 28 
+ 1 
+ 20 
+ 1 
- 4 
- 
13 
+ 27 
0 
+ 1 
0 
7 
0 
0 
+ 1 
+ 33 
+ 14 
- 8 
-20 
+ 
3 
+ 
3 
- 
1 
+ 6 
+ 1 
8 
0 
+ 
3 
- 1 
- 1 
+ 52 
+ 18 
+ 10 
+ 
8 
_ 
2 
0 
+ 6 
+ 3 
9 
+ 1 
+ 
4 
+ 2 
- 2 
0 
+ 30 
+ 1 
- 
2 
- 
3 
+ 
1 
+ 3 
+ 2 
10 
0 
+ 
2 
+ 2 
0 
- 1 
+ 1 
- 2 
- 
4 
- 
4 
+ 
1 
- 1 
+ 4 
11 
- 2 
0 
+ 1 
+ 1 
+ 2 
0 
- 1 
- 
2 
— 
4 
+ 
1 
- 4 
+ 3 
12 
Errors 
- .2 
— 
1 
- 1 
+ 2 
+ 1 
0 
- 1 
+ 
1 
0 
+ 
1 
- 1 
+ 2 
Day 
+ 6 
+ 
6 
+ 7 
+ 8 
+ 18 
+ 11 
+ 9 
+ 
5 
+ 
4 
+ 
5 
± 4 
± 5 
Night 
± 2 
+ 
2 
± 2 
± 2 
± 1 
0 
± 1 
+ 
4 
+ 
3 
+ 
1 
+ 4 
+ 4 
See Tables II and III for details of the calculation of the figures for June. 
(Issued separately August 4, 1920.) 
