JanFebMarAprMayJunJulAugSepOctNovDec
113.811.98.49.510.818.8      
212.311.610.39.613.819.6      
311.211.210.111.916.322.6      
47.610.611.112.818.219.4      
57.411.69.613.920.316.9      
68.912.78.914.517.720.3      
76.611.87.812.621.420.1      
811.512.19.911.415.820.2      
99.413.511.111.917.818.5      
1011.08.410.911.619.121.7      
1112.28.311.313.316.822.0      
129.19.511.116.515.420.9      
139.210.811.714.419.320.2      
1410.79.612.915.917.020.8      
158.111.811.616.219.224.2      
1610.315.310.216.819.224.1      
178.411.915.015.119.326.8      
189.311.514.713.916.419.6      
1911.412.113.215.718.316.4      
207.913.311.518.318.322.7      
215.610.814.218.918.523.4      
224.113.214.517.418.425.4      
236.410.116.518.315.724.9      
246.68.818.519.317.717.8      
255.411.517.915.717.918.1      
268.210.518.215.319.019.2      
2712.69.917.314.418.820.3      
2810.610.714.015.619.617.6      
2911.912.415.916.419.9      
309.414.114.215.8       
318.98.218.1    
Avg: 9.211.312.514.717.6* 20.8      
Hi: 13.815.318.519.321.4* 26.8      
Lo: 4.18.37.89.510.8* 16.4      
Note:  *Incomplete dataset.
AvgJanFebMarAprMayJunJulAugSepOctNovDec
20229.211.312.514.717.6* 20.8      
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
Avg8.8* 9.4* 11.414.016.9* 19.921.620.819.1* 15.511.79.6