PLate XX 
T@ (700) 
® 
ULMUS 
4004 
3004 
e 
cy 
e 
200, °® 
Q 
) 
r) 
ry 
100 4 
| 
e 
50-4 
\ 
/ @ | 
| ° 
° \ 
@® 
10-4 r e* 
e 
54 e 
| a @ fo e 
e e 
e ® @ ee e 
0 +ee——-@———_00——_0se0098— 
=e r as SI = ea a 
15 20 25 30 5 
APRIL MAY 
1965 
Note that scale is expanded in the lower range. The line indicates 
the average pollen count for all stations on each day. The points lying 
above the line indicate the highest observed count on that day and 
those below the line, the lowest. 
