EXPOSURE 53 
The months for latitudes north of the equator are given at the 
top of the tables, while those for the southern hemisphere are 
below. 
For 53° N.; British Isles, Northern Germany, Southern 
Canada, and Southern Russia. 
JBN a ad May > Apr Manin Heb.) ) jan. 
MM jJune> July Aug, (Sept. Oct. Nov. | Dee. 
Bel 2 0 0. yy 1 PY) 2 3 
es | 0 0 y% 1 2 3 + 
HOV -2Z 0 0 Y 1% 2% 4 5 
SES: Y, yY 1 Z 3 5 7 
8 4 1 1 1A) 2 ies 
Bei D 14% 2 24% (15 Bie 
Catan ¢ 2 3 5 
eZ. 5 5 
4 8 6 
Dec. Nov. Oct: Sept, | Aug? July.) fume 
Jan. eb.) Mara Apr) (Miay, 
For 40° N.; Northern United States, Armenia, Spain, 
Italy, Turkey, Japan, Greece, Pekin, and Central China. 
JENN) bg May | Apr.) Mar.) Webs) )Jan! 
M M June July Aug. Sept. Oct. Nov. Dec. 
2 0 0 0 y, Yak 1 
JE Cae | 0 0 0 yy yY% 1 1 
LOR 2 0 0 yy ye 4 1% 1% 
Or) 3 y, y, Mya e | 1 72 2 
8 4 1 1 1 Z 2 3 4 
TN AS 1 1% 3 4 5 5 5 
6 6 Z 3 4 
D7. 5 
