JanFebMarAprMayJunJulAugSepOctNovDec
111.41.711.317.315.4       
24.94.413.111.115.6       
35.08.211.910.014.7       
42.811.210.37.313.2       
53.79.911.610.914.4       
69.311.112.113.214.4       
710.810.211.815.916.9       
89.810.510.617.215.3       
95.910.613.510.714.8       
107.48.310.914.216.4       
118.89.711.314.917.3       
1210.311.39.612.918.4       
1312.211.611.310.819.8       
149.513.613.410.821.0       
159.813.414.214.322.0       
1610.211.311.714.320.1       
175.512.110.419.314.6       
186.49.810.423.116.6       
196.511.512.624.4        
204.612.112.925.3        
217.112.413.725.9        
226.810.311.024.8        
234.516.912.922.6        
246.116.614.314.4        
2512.118.813.814.6        
2610.117.714.615.0        
278.117.315.212.8        
286.512.516.415.2        
297.217.917.6        
305.119.817.4        
314.613.6     
Avg: 7.511.612.815.9* 16.7       
Hi: 12.218.819.825.9* 22.0       
Lo: 2.81.79.67.3* 13.2       
Note:  *Incomplete dataset.
AvgJanFebMarAprMayJunJulAugSepOctNovDec
20197.511.612.815.9* 16.7       
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
Avg8.89.111.415.2* 18.522.325.022.8* 20.316.111.610.3