TABLE B-23. --May and July pond indexes by strata and comparisons with average 
and previous year, southern Saskatchewan, 1956 to 1965 
Year 
Stratum 
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 
1960 -...- 
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 
37.7 
1,188. 7 
1965 - 
393.6 
453.0 
484.9 
224.4 
81.4 
1, 637.3 
Average 1956 to 1965 - 
476.2 
569.7 
659.9 
290.1 
104.6 
2, 069.7 
Percent change, 1965 
from 1964 - 
-22.5 
+124.1 
+48.8 
+95.3 
+115.9 
+37.7 
Average - 
-17.3 
-20.5 
-26.5 
-22.6 
-22.2 
-20.9 
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 --— - 
173.8 
227.4 
161.8 
84.5 
41.6 
689.1 
1964 -- 
177.8 
97.3 
121.6 
30.5 
12.3 
439.5 
1965 —.—. 
153.3 
280.1 
288.5 
102.8 
92.6 
921.3 
Average 1958 to 1965 - 
441.2 
310.4 
346.3 
148.5 
58.5 
1, 304.8 
Percent change, 1965 
from 1964 - 
-11.5 
+187.9 
+137.2 
+237.0 
+652.8 
+109.6 
Average - 
-64.3 
-9.8 
-16.7 
-30.8 
+ 58.3 
-29.4 
58 
