JanFebMarAprMayJunJulAugSepOctNovDec
111.8           
26.0           
35.6           
43.9           
55.6           
69.3           
710.9           
89.7           
96.5           
107.2           
119.6           
1210.8           
1312.2           
1410.6           
159.9           
1610.0           
17            
18            
19            
20            
21            
22            
23            
24            
25            
26            
27            
28            
29           
30           
31       
Avg: * 8.7           
Hi: * 12.2           
Lo: * 3.9           
Note:  *Incomplete dataset.
AvgJanFebMarAprMayJunJulAugSepOctNovDec
2019* 8.7           
201810.07.79.915.121.023.927.523.420.316.312.410.8
2017* 8.710.4* 14.315.919.122.423.021.718.616.811.89.4
201610.210.111.914.019.520.923.224.121.616.711.610.8
20159.98.912.217.117.321.622.3* 21.5* 20.4 * 12.313.8
201410.310.914.316.518.923.626.722.221.9* 16.912.810.1
20137.77.58.114.017.821.627.924.720.217.010.810.6
2012     * 20.521.423.219.714.411.210.0
Avg* 9.39.2* 11.815.418.9* 22.124.6* 23.0* 20.4* 16.3* 11.810.8