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Year.|Jan.|Feb.|Mar.|Apr.|May.|Jun.|Jul.|Aug.|Sep.|Oct.|Nov.|Dec.|Mean
-----|----|----|----|----|----|----|----|----|----|----|----|----|----
1872 | .. | .. | .. | .. | .. | .. | .. | .. | 76 | 63 | 48 | 43 | ..
3 | 43 | 53 | 54 | 64 | 74 | 78 | 83 | 80 | 75 | 63 | 54 | 49 | 64
4 | 51 | 54 | 61 | 63 | 73 | 80 | 80 | 82 | 76 | 65 | 58 | 51 | 66
5 | 47 | 49 | 57 | 62 | 74 | 81 | 85 | 78 | 74 | 60 | 59 | 54 | 65
6 | 54 | 54 | 54 | 65 | 73 | 80 | 83 | 80 | 75 | 62 | 53 | 41 | 65
7 | 49 | 52 | 55 | 64 | 72 | 81 | 84 | 81 | 75 | 65 | 54 | 52 | 67
8 | 46 | 50 | 63 | 67 | 75 | 79 | 84 | 84 | 77 | 65 | 56 | 44 | 66
9 | 48 | 49 | 60 | 63 | 74 | 79 | 82 | 77 | 74 | 68 | 58 | 54 | 66
1880 | 58 | 54 | 62 | 67 | 74 | 79 | 81 | 80 | 73 | 65 | 51 | 46 | 66
1 | 44 | 50 | 53 | 64 | 75 | 82 | 84 | 81 | 78 | 71 | 56 | 54 | 66
2 | 55 | 57 | 62 | 68 | 70 | 80 | 78 | 79 | 74 | 70 | 54 | 45 | 66
3 | 50 | 58 | 55 | 66 | 71 | 79 | 82 | 80 | 76 | 71 | 58 | 54 | 67
4 | 40 | 55 | 60 | 63 | 75 | 76 | 81 | 78 | 79 | 72 | 54 | 51 | 65
5 | 46 | 45 | 52 | 66 | 70 | 80 | 80 | 80 | 75 | 61 | 54 | 47 | 63
6 | 42 | 47 | 56 | 64 | 73 | 78 | 80 | 80 | 77 | 66 | 54 | 45 | 63
7 | 45 | 59 | 58 | 66 | 76 | 80 | 80 | 79 | 76 | 64 | 56 | 48 | 66
8 | 51 | 54 | .. | .. | .. | .. | .. | .. | .. | .. | .. | .. | ..
-----|----|----|----|----|----|----|----|----|----|----|----|----|----
Means| 48 | 53 | 57 | 65 | 73 | 79 | 82 | 80 | 76 | 66 | 55 | 49 | 65
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