| YEAR(S | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1928 | 985.50 | 869.00 | 635.00 | 516.50 | 180.50 | 49.50 | 0.00 | 0.00 | 41.50 | 345.00 | 753.00 | 1128.50 | 5504.00 | |||||||||||||
| 1929 | 1153.00 | 1026.00 | 780.00 | 595.00 | 213.50 | 77.00 | 0.00 | 0.50 | 105.50 | 374.50 | 826.50 | 822.00 | 5973.50 | |||||||||||||
| 1930 | 1231.50 | 728.50 | 768.50 | 359.50 | 418.00 | 49.00 | 1.50 | 11.88 | a | 0.00 | z | 530.50 | 900.00 | 1232.25 | a | 6231.13 | ||||||||||
| 1931 | 1085.00 | 856.00 | 776.00 | 406.50 | 210.00 | 17.50 | 0.00 | 2.00 | 51.00 | f | 246.50 | f | 856.00 | 1121.68 | a | 5330.68 | ||||||||||
| 1932 | 1265.50 | 925.50 | 752.50 | 425.00 | 241.50 | 0.00 | z | 0.00 | z | 16.00 | 36.50 | 406.50 | 543.50 | 1230.00 | 5842.50 | |||||||||||
| 1933 | 1127.50 | 1126.22 | a | 683.00 | 564.00 | 454.50 | 19.50 | 0.00 | 1.00 | 8.00 | 177.50 | 641.00 | 742.50 | 5544.72 | ||||||||||||
| 1934 | 968.00 | 661.50 | 461.00 | 297.50 | 67.00 | 53.50 | 0.00 | 0.00 | 94.50 | 259.00 | 600.00 | 997.50 | 4459.50 | |||||||||||||
| 1935 | 899.50 | 766.00 | 814.78 | a | 453.50 | 348.50 | 12.50 | 0.00 | 1.00 | 59.00 | 368.90 | a | 794.50 | 994.00 | 5512.18 | |||||||||||
| 1936 | 990.00 | 859.50 | 716.50 | 333.50 | 159.50 | 65.00 | 26.00 | 0.00 | 88.50 | 374.00 | 0.00 | z | 1005.71 | e | 4618.21 | |||||||||||
| 1937 | 1588.20 | c | 909.48 | a | 771.50 | 552.50 | 174.00 | 88.00 | 1.50 | 0.00 | 61.00 | 385.00 | 662.50 | 961.00 | 6154.68 | |||||||||||
| 1938 | 1019.79 | b | 896.00 | b | 831.66 | b | 485.89 | b | 291.50 | 37.50 | 7.00 | 1.00 | 30.52 | a | 434.00 | 995.17 | a | 964.10 | a | 5994.13 | ||||||
| 1939 | 1142.50 | 1271.08 | d | 773.00 | 443.04 | b | 225.50 | 87.50 | 0.50 | 0.00 | 116.50 | 477.00 | 0.00 | z | 862.00 | 5398.62 | ||||||||||
| 1940 | 0.00 | z | 862.00 | 618.00 | 176.00 | n | 142.50 | 39.50 | 0.50 | 1.00 | 83.50 | 367.50 | 822.50 | 0.00 | z | 2937.00 | ||||||||||
| 1941 | 566.00 | m | 720.50 | 747.50 | 665.50 | 244.50 | 122.00 | 2.00 | 16.50 | 237.00 | 623.50 | 781.00 | 1038.50 | 5198.50 | ||||||||||||
| 1942 | 1183.68 | a | 1060.50 | 900.00 | 509.00 | 368.90 | a | 72.00 | 0.00 | 7.75 | a | 94.50 | 434.50 | 739.50 | 925.50 | 6295.83 | ||||||||||
| 1943 | 1020.93 | a | 840.00 | 721.78 | a | 362.50 | 294.00 | 133.00 | 1.00 | 10.13 | e | 65.00 | 379.50 | 749.50 | 1018.50 | 5595.85 | ||||||||||
| 1944 | 1267.50 | 1061.72 | b | 938.55 | b | 634.00 | 300.00 | 151.50 | 0.00 | 6.50 | 85.50 | 367.50 | 862.00 | 1044.50 | 6719.27 | |||||||||||
| 1945 | 1073.63 | a | 830.00 | 877.00 | 653.00 | 263.50 | 175.50 | 1.66 | c | 0.50 | 183.50 | 379.23 | a | 773.00 | 1118.50 | 6329.03 | ||||||||||
| 1946 | 1184.95 | b | 911.50 | 746.00 | 409.00 | 320.69 | b | 27.00 | 1.66 | c | 0.00 | 134.00 | 606.00 | 855.00 | 924.00 | 6119.80 | ||||||||||
| 1947 | 1249.30 | a | 732.50 | 678.00 | 557.00 | 197.50 | 112.50 | 3.10 | a | 0.53 | b | 73.50 | 386.50 | 988.97 | a | 1103.08 | a | 6082.48 | ||||||||
| 1948 | 1068.00 | 1033.50 | 1029.00 | 484.00 | 262.00 | 62.00 | 0.00 | 2.50 | 132.00 | 385.00 | 885.00 | 1137.00 | 6480.00 | |||||||||||||
| 1949 | 1627.50 | 1161.50 | 838.50 | 430.00 | 278.00 | 105.00 | 0.00 | 1.03 | a | 56.00 | 549.50 | 551.00 | 1074.31 | b | 6672.34 | |||||||||||
| 1950 | 1176.50 | 791.50 | 762.00 | 441.21 | a | 344.50 | 82.50 | 2.58 | a | 6.00 | 163.00 | 232.00 | 623.00 | 863.50 | 5488.29 | |||||||||||
| 1951 | 1112.38 | a | 836.89 | a | 638.50 | i | 497.00 | 279.00 | 90.50 | 1.60 | b | 10.00 | 34.00 | 422.93 | c | 821.00 | 1163.00 | 5268.30 | ||||||||
| 1952 | 1110.50 | 907.59 | b | 941.50 | 452.59 | a | 211.00 | 36.50 | 0.00 | 0.00 | 62.50 | 204.00 | 911.00 | 1017.00 | 5854.18 | |||||||||||
| 1953 | 791.00 | 885.00 | 711.00 | 545.00 | 439.00 | 57.50 | 0.00 | 1.55 | a | 26.50 | 416.00 | 644.00 | 1124.00 | 5640.55 | ||||||||||||
| 1954 | 987.50 | 787.50 | 849.00 | 370.00 | 174.63 | a | 92.50 | 0.00 | 1.00 | 64.14 | a | 320.00 | 668.00 | 1052.50 | 5366.77 | |||||||||||
| 1955 | 1249.82 | a | 1120.50 | 794.00 | 579.50 | 299.15 | a | 85.00 | 0.00 | a | 1.50 | 115.50 | 317.00 | 766.07 | b | 830.50 | 6158.54 | |||||||||
| 1956 | 801.00 | 1036.50 | 702.67 | a | 512.00 | 196.50 | 15.50 | 0.00 | a | 2.00 | 46.61 | b | 392.00 | 912.00 | 1046.00 | 5662.77 | ||||||||||
| 1957 | 1142.00 | 735.00 | 750.00 | 584.50 | 219.50 | n | 77.31 | d | 0.00 | z | 11.50 | 111.50 | 459.50 | 981.00 | 938.50 | 5790.81 | ||||||||||
| 1958 | 1106.00 | 732.50 | 929.00 | 642.93 | a | 171.50 | 31.03 | a | 0.00 | 0.00 | 126.50 | 369.50 | 824.50 | 853.00 | 5786.47 | |||||||||||
| 1959 | 1010.08 | a | 943.50 | 798.00 | 454.00 | 304.00 | 23.28 | a | 0.52 | a | 0.00 | 186.50 | 448.47 | a | 787.76 | a | 1059.50 | 6015.60 | ||||||||
| 1960 | 1227.00 | 1022.25 | a | 673.50 | 490.34 | a | 253.68 | a | 11.50 | 0.00 | 15.00 | 36.50 | 458.00 | 742.24 | a | 1141.00 | 6071.02 | |||||||||
| 1961 | 1091.00 | 809.41 | a | 860.00 | 430.00 | f | 277.28 | d | 41.90 | a | 1.11 | c | 1.50 | 229.29 | b | 436.30 | d | 510.50 | l | 585.50 | p | 3747.77 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 1123.01 | 903.43 | 776.62 | 490.80 | 260.78 | 66.71 | 1.63 | 3.82 | 93.39 | 396.56 | 782.59 | 1016.68 | 5895.06 | |||||||||||||
| S.D. | 176.34 | 145.50 | 109.07 | 96.25 | 86.67 | 41.46 | 4.67 | 5.22 | 57.89 | 98.47 | 122.58 | 121.36 | 484.90 | |||||||||||||
| SKEW | 0.87 | 0.56 | -0.24 | 0.02 | 0.31 | 0.71 | 4.69 | 1.30 | 0.90 | 0.08 | -0.19 | -0.29 | -0.76 | |||||||||||||
| MAX | 1627.50 | 1271.08 | 1029.00 | 665.50 | 454.50 | 175.50 | 26.00 | 16.50 | 237.00 | 623.50 | 995.17 | 1232.25 | 6719.27 | |||||||||||||
| MIN | 791.00 | 661.50 | 461.00 | 297.50 | 67.00 | 11.50 | 0.00 | 0.00 | 8.00 | 177.50 | 543.50 | 742.50 | 4459.50 | |||||||||||||
| NO YRS | 32 | 34 | 33 | 32 | 33 | 33 | 32 | 34 | 32 | 33 | 31 | 32 | 24 | |||||||||||||