42 
WHEAT PRODUCTION IN NEW ZEALAND 
TABLE X. 
OORRELATION BETWEEN YIELD AND “USEFUL” 
RAINFALL (MAY-NOVEMBER) FOR CANTERBURY, 
1871 to 1913. 
RAINFALL YIELD Product 
; + oO: eV1- 
MN GER’ ltas | Swores RGAE] RiSue_ | Samer | “tion 
1871 15.7 + 6 .25 | 21.5] — 3.5 12.25 | — 1.75 
2 9.8 - 5.4 29.16 | 21.8} — 3.2 10.24 | +17.28 
3 16.8 + 1.4 1.96 | 23.8 | — 1.2 1.44 | — 1.68 
4 14.6 — 0.6 .36 | 26.0] + 1.0 1.00} — .60 
5 25.6 +10.4 | 106.16 | 30.8} + 5.8 33.64 | +60.32 
6 12.2 —- 3.0 9.00 | 28.3 | + 3.3 10.89 |} — 9.90 
7 11.1 - 41 16.81 | 32.0 | + 7.0 49.00 | —28.70 
8 8.8 - 6.4 40.96 | 21.0} — 4.0 16.00 | +25.60 
9 16.0 + 0.8 .64 | 28.0} + 3.0 9.00 | + 2.40 
1880 11.4 - 3.8 14.44 | 23.8) — 1.2 1.44 | + 4.56 
1 23.4 + 8.2 67.24 | 21.3} — 3.7 13.69 | —30.34 
2 14.9 — 0.3 .09 | 25.5} + 0.5 0.25 | — 0.15 
3 18.2 + 3.0 9.00 | 25.6 | + 0.6 0.36 | + 1.80 
4 16.1 + 0.9 81) 24.4 | — 0.6 0.86 | — 0.45 
5 12.8 — 2.4 5.76 | 24.0] — 1.0 1.00 | + 2.40 
6 24.8 + 9.6 92.16 | 23.7 | -— 1.3 1.69 | —12.48 
7 25.9 +10.7 | 114.49 | 25.0 — —= = 
8 18.6 + 3.4 11.56 | 22.9] — 2.1 4.41 | — 7.14 
9 12.7 — 2.5 6.25 | 24.3 | — 0.7 0.49 | + 1.75 
1890 10.7 — 4.5 20.25 | 17.9} — 7.1 50.41 | +31.95 
1 10.2 — 5.0 25.00 | 24.9) — 0.1 .01 | + 0.50 
2 16.7 + 1.5 2.25 | 21.0} — 4.0 16.00 | — 6.00 
3 11.3 - 3.9 15.21 | 19.6] — 5.4 29.16 | -+-21.06 
4 17.5 + 2.3 5.29 | 23.7 | — 1.8 1.69 | — 2.99 
5 19.9 + 4.7 22.09 | 27.0] + 2.0 4:00 | + 9.40 
6 16.2 + 1.0 1.00 } 21.0] — 4.0 16.00 | — 4.00 
7 8.0 — 7.2 51.84 | 15.1 | — 9.9 98.01 | +71.28 
8 12.6 — 2.6 6.76 | 33.7 | + 8.7 75.69 | —22.62 
9 
1900 
k 11.0 — 4.2 17.64 | 23.7 | — 1.3 1.69 | + 5.46 
3 12.2 - 3.0 9.00} 34.2 | + 9.2 84.64 | —27.60 
4 18.0 + 2.8 7.84 | 85.0 | +10.0 | 100.00 | +28.00 
5 20.5 + 5.3 28.09 | 80.4 | + 5.4 29.16 | +28.72 
6 15.0 — 0.2 .04 | 28.1) + 3.1 9.61 | — 0.62 
7 12.3 —- 29 8.41 | 28.2) + 3.2 10.24 | — 9.28 
8 15.2 + 0.0 re 35.6 | +10.6 | 112.86 = 
9 15.5 + 0.8 .09 | 27.8 | + 2.8 7.84 | + 0.84 
1910 13.3 = 19 3.61 | 26.0 | + 1.0 1.00 | — 1.90 
11 19.9 + 4.7 22.09 | 34.8 | + 9.3 86.49 | +43.71 
12 17.3 + 2.1 4.41 | 26.6] + 1.6 2.56 | + 3.36 
13 16.9 + 1.7 2.89 | 31.6] + 6.6 43.56 | +11.22 
Sum of Squares 780.90 | Sum of Squares 867.27 |+203.41 
