The extent to which high minima may hold up the mean temperature is shown by the fact that the mean monthly temperature for January, 1908, was lower than for February. Single instances illustrate this relation equally well. For example, on March 5th, 1908, there occurred the heaviest rainfall of that year. The maximum and minimum curves almost touch. The middle of April and late September, 1909, are other illustrations. The relationship is so striking that I have put the two curves side by side and have had them drawn to the same scale.
| FREQUENCY OF THE DIURNAL VARIABILITY, MOROCOCHA, 1908 AND 1909 | ||||||||||||||
| 1908 | ||||||||||||||
| Degrees F. | J. | F. | M. | A. | M. | J. | J. | A. | S. | O. | N. | D. | Total No. of days | |
| 0 | — | 3 | 2 | 3 | — | — | 2 | 1 | 3 | 1 | 1 | 3 | 19 | |
| 0-1 | 6 | 5 | 6 | 10 | 9 | 10 | 13 | 10 | 8 | 6 | 6 | 5 | 94 | |
| 1-2 | 4 | 1 | 3 | 7 | 5 | 3 | 7 | 7 | 8 | 6 | 6 | 4 | 61 | |
| 2-3 | 6 | 1 | 3 | 4 | 9 | 2 | 2 | 4 | 4 | 7 | 7 | 4 | 53 | |
| 3-4 | 5 | 3 | 2 | 3 | 3 | 4 | 2 | 9 | 4 | 5 | 3 | 5 | 48 | |
| 4-5 | 2 | 3 | 1 | 1 | 2 | 5 | 5 | — | 1 | 1 | 6 | 3 | 30 | |
| Over 5 | 3 | 4 | 3 | 2 | 3 | 6 | — | — | 2 | 5 | 1 | 5 | 34 | |
| Days per month | 26 | 20 | 20 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 20 | 339 | |
| 1909 | |||||||||||||||
| Degrees F. | J. | F. | M. | A. | M. | J. | J. | A. | S. | O. | N. | D. | Total No. of days | Mean for 1908-1909 | |
| 0 | 6 | 1 | 4 | 2 | 1 | 2 | 4 | 4 | 3 | 6 | 2 | 1 | 36 | 27.5 | |
| 0-1 | 9 | 8 | 5 | 6 | 6 | 7 | 8 | 13 | 9 | 4 | 11 | 10 | 96 | 95 | |
| 1-2 | 4 | 6 | 8 | 3 | 11 | 14 | 3 | 3 | 5 | 3 | 9 | 6 | 75 | 68 | |
| 2-3 | 3 | 7 | 4 | 8 | 4 | 3 | 6 | 6 | 4 | 6 | 1 | 3 | 55 | 54 | |
| 3-4 | 4 | 5 | 3 | 6 | 4 | 4 | 4 | 3 | 6 | 3 | 2 | 5 | 49 | 48.5 | |
| 4-5 | 1 | 1 | 5 | 1 | 2 | — | 2 | 1 | 1 | 2 | — | 2 | 18 | 24 | |
| Over 5 | 4 | — | 2 | 4 | 3 | — | 4 | 1 | 2 | 7 | 5 | 3 | 35 | 34.5 | |
| Days per month | 31 | 28 | 31 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 30 | 364 | 351.5 | |
RAINFALL
The annual rainfall of Morococha is as follows:
| 1906 | 28 | inches | ( | 712 mm.) |
| [38] 1907 | 40 | " | (1,011 mm.) | |
| 1908 | 57 | " | (1,450 mm.) | |
| 1909 | 45 | " | (1,156 mm.) | |
| 1910 | 47 | " | (1,195 mm.) | |
| 1911 | 25 | " | ( | 622 mm.) |