TABLE 2 ~ Cont'd.
South Dakota,Vermillion
Collection
Period
1957
2
Cumulative
sr99
°
6r90
Precipitation
mo Sr90/mi~
mo Sr?9/ni2
(inches )
n=
9.18 7 0.19
——
January
0.08 2 0.01
9-26 # 0.19
17
0.22
February
0.38 * 0.02
9.44 2 0.19
13
2e13
April
2.5421.00
12.38 2 0.19
12
5015
May
2.28 20.06
14.66 2 0.21
12
1.85
June
0.16
U,.82
Oe2l
5
1.209
July
22 20.08
1762) 2 0.22
31
Lyols7
August
0.50 20.02
17-7) 2 0.22
ag
0019
April
to
=n
December
1958
2
0.02
z
September
0.88
October
November
December
*
Values extrapolated to midpoint of collection period.
-~15-