JanFebMarAprMayJunJulAugSepOctNovDec
111.41.7          
24.94.4          
35.08.2          
42.811.2          
53.79.9          
69.311.1          
710.810.2          
89.810.5          
95.910.6          
107.48.3          
118.89.7          
1210.311.3          
1312.211.6          
149.513.6          
159.813.4          
1610.211.3          
175.512.1          
186.49.8          
196.511.5          
204.612.1          
217.112.4          
226.810.3          
234.5           
246.1           
2512.1           
2610.1           
278.1           
286.5           
297.2          
305.1          
314.6      
Avg: 7.5* 10.2          
Hi: 12.2* 13.6          
Lo: 2.8* 1.7          
Note:  *Incomplete dataset.
AvgJanFebMarAprMayJunJulAugSepOctNovDec
20197.5* 10.2          
20189.77.39.314.920.423.827.323.320.015.611.910.5
20177.79.713.515.619.222.623.121.718.416.511.68.7
20169.69.511.314.219.621.424.124.221.815.710.310.0
20159.68.211.716.917.622.122.821.919.615.813.413.6
201410.310.613.716.018.623.426.021.922.017.012.29.6
20137.57.17.613.017.320.626.924.220.517.410.610.4
2012        * 19.715.010.89.2
Avg8.8* 8.911.215.118.822.325.022.8* 20.316.111.610.3