| Cumulative Percent Frequencies | | Month | >=95 | >=90 | >=85 | >=80 | >=75 |
| January |
0 % |
0 % |
12.2 % |
92.3 % |
98.4 % |
| February |
0 % |
0.2 % |
17.2 % |
93.8 % |
99.5 % |
| March |
0 % |
0 % |
29.1 % |
94.7 % |
99.5 % |
| April |
0 % |
2.4 % |
51.1 % |
96.3 % |
99.8 % |
| May |
0 % |
6.7 % |
74.4 % |
97.3 % |
99.5 % |
| June |
0.1 % |
12.3 % |
84.5 % |
98.6 % |
100 % |
| July |
0.1 % |
17.9 % |
84.7 % |
97.5 % |
100 % |
| August |
0.3 % |
24.8 % |
87.5 % |
98.2 % |
99.9 % |
| September |
0 % |
26.1 % |
85 % |
97.1 % |
99.8 % |
| October |
0 % |
17.9 % |
76.8 % |
94.5 % |
99.6 % |
| November |
0 % |
6 % |
59.9 % |
93.1 % |
99.3 % |
| December |
0 % |
0.3 % |
27.1 % |
92.8 % |
99.2 % |
| Annual |
0 % |
9.6 % |
57.7 % |
95.5 % |
99.5 % |
|