JanFebMarAprMayJunJulAugSepOctNovDec
113.8           
212.3           
311.2           
47.6           
57.4           
68.9           
76.6           
811.5           
99.4           
1011.0           
1112.2           
129.1           
139.2           
1410.7           
158.1           
1610.3           
178.4           
18            
19            
20            
21            
22            
23            
24            
25            
26            
27            
28            
29           
30           
31       
Avg: * 9.9           
Hi: * 13.8           
Lo: * 6.6           
Note:  *Incomplete dataset.
AvgJanFebMarAprMayJunJulAugSepOctNovDec
2022* 9.9           
20217.69.311.813.014.620.322.720.320.316.311.710.8
202010.111.111.616.418.819.921.222.319.814.712.89.4
20198.2* 11.2* 12.814.016.619.222.721.719.414.910.810.5
201810.17.69.014.018.622.424.821.919.415.312.011.4
20178.710.112.514.417.420.421.620.518.016.211.79.6
201610.29.611.212.817.919.621.722.120.115.210.810.6
20159.98.411.115.215.819.920.619.918.115.313.413.3
20149.99.912.114.116.320.723.320.120.816.312.69.7
20138.17.17.511.515.118.623.822.019.016.410.410.4
201210.18.613.412.117.017.319.420.417.914.310.99.5
20117.410.511.917.416.418.620.019.719.116.913.810.5
20105.47.310.113.916.221.021.220.318.215.110.04.1
20097.18.312.014.217.120.019.720.319.116.012.57.5
200810.610.610.812.818.419.220.219.518.314.311.07.7
2007         * 15.311.99.4
Avg* 8.9* 9.2* 11.314.016.919.821.620.819.1* 15.511.79.6