TABLE B-26. —May and July pond indexes by strata and comparisons with average 
and previous year, southern Saskatchewan, 1956 to 1964 
Stratum 
Year 
A-East 
A-West 
B-East 
B-West 
C 
Total 
May: 
1956- 
754.4 
700.3 
644.8 
284.2 
105.8 
2,489.5 
1957 - 
292.3 
357.9 
576.2 
148. 5 
72.2 
1,447.1 
1958 - 
526. 5 
350.5 
498.6 
191.0 
105.1 
1,671.7 
1959- 
157.7 
334.5 
160.2 
57.4 
73.6 
783.4 
I960- 
479.2 
987.4 
377.3 
164.3 
90.1 
2,098.3 
1961- 
48.7 
171.1 
221.4 
92.0 
55.7 
588.9 
1962- 
153.2 
336.3 
635.4 
173.3 
49.1 
1,347.3 
1963-—- 
239.4 
256.0 
293.9 
131.6 
39.5 
960.4 
1964- 
508.1 
202.1 
325.9 
114.9 
j 37.7 
1,188.7 
Average 1956 to 1964- - 
Percent change, 1964 
344.6 
462.6 
444.8 
158.7 
78.8 
1,489.5 
from 1963 - 
+56.3 
-23.9 
-53.7 
-24.1 
-19.6 
-28.7 
Average - 
-30.5 
-44.7 
-33.9 
-17.1 
-49.9 
-35.5 
July: 
1958- 
212.8 
141.8 
267.4 
107.1 
33.8 
762.9 
1959- 
143.0 
120.5 
145.0 
36.8 
26.0 
471.3 
I960- - --- 
212.4 
265.2 
318.1 
88.0 
32.7 
916.4 
1961- 
34.4 
50.6 
61,2 
37.1 
9.8 
193.1 
1962--- 
75.7 
61.8 
68.6 
26.3 
13.3 
245.7 
1963 --- 
1964 - - -- 
173.8 
227.4 
161.8 
84.5 
41.6 
689.1 
Average 1958 to 1964-- 
Percent change, 1964 
135.7 
128.0 
172.1 
59.1 
23.1 
517.9 
from 1963 - 
+129.6 
+268.0 
+135. 9 
+221. 3 
+212.8 
+180.5 
Average - -- 
+28.1 
+77.7 
-6.0 
+43.0 
+80.1 
+33.1 
68 
