JanFebMarAprMayJunJulAugSepOctNovDec
19.27.37.911.020.718.214.724.720.213.512.313.3
29.813.06.713.823.716.517.525.420.515.312.29.9
38.211.69.713.313.016.918.219.818.715.511.15.2
47.813.810.114.413.116.817.619.317.216.110.410.0
56.811.812.116.220.915.218.425.118.116.511.811.5
66.111.211.717.718.216.017.022.326.714.114.011.5
74.46.69.014.418.918.218.018.721.418.810.711.5
83.23.57.614.620.815.022.320.516.816.710.17.0
93.88.410.810.821.814.623.721.415.512.57.27.9
105.510.08.414.224.115.618.722.015.210.913.26.4
116.08.68.419.023.714.616.926.913.813.411.55.5
125.19.114.217.324.616.015.626.315.212.610.57.4
137.18.113.515.018.016.018.320.416.310.311.56.2
145.113.513.512.717.619.117.422.320.312.411.68.2
152.215.413.19.519.915.222.119.814.914.311.211.8
163.311.110.212.519.518.618.720.418.916.010.411.2
173.114.715.511.222.018.524.819.221.818.07.810.2
182.611.916.111.422.416.525.119.220.114.84.513.8
195.210.714.713.323.321.128.318.821.017.33.06.6
206.312.612.214.018.524.224.618.918.417.34.28.7
2113.213.711.313.021.522.419.919.021.014.14.0 
2211.98.710.710.714.420.521.217.614.615.64.6 
2314.73.28.212.411.424.321.719.114.915.013.8 
2411.614.510.611.614.126.722.518.414.414.614.3 
2511.88.19.210.519.125.921.516.514.616.810.3 
2612.38.713.312.021.628.820.520.214.815.18.3 
278.18.89.711.219.220.120.618.913.211.86.6 
2810.110.69.912.620.717.625.720.713.716.35.1 
2910.910.413.715.018.018.427.919.414.414.68.8 
307.615.019.318.216.624.221.912.211.813.5 
3110.712.719.029.521.411.1 
Avg: 7.510.311.313.519.418.821.120.817.314.69.6* 9.2
Hi: 14.715.416.119.324.628.829.526.926.718.814.3* 13.8
Lo: 2.23.26.79.511.414.614.716.512.210.33.0* 5.2
Note:  *Incomplete dataset.
AvgJanFebMarAprMayJunJulAugSepOctNovDec
20247.510.311.313.519.418.821.120.817.314.69.6* 9.2
20237.810.010.313.118.023.219.920.421.115.39.68.8
20227.89.712.814.217.320.222.124.018.815.911.35.7
20215.48.311.112.414.720.923.119.920.415.210.58.3
20208.4* 8.610.915.918.219.618.621.418.313.011.47.1
20196.010.710.814.015.318.021.420.9* 17.612.48.37.9
20187.75.67.812.919.322.024.820.217.114.010.48.8
20176.78.711.912.317.919.620.419.316.714.99.67.1
20168.17.79.711.417.320.020.220.6* 19.514.17.98.4
20157.46.99.914.314.119.019.320.217.015.011.912.0
20147.88.711.414.716.519.822.318.619.615.210.77.8
20135.56.26.011.914.518.423.720.917.515.19.19.0
2012          * 9.17.0
Avg7.2* 8.510.313.416.920.021.420.6* 18.414.6* 10.0* 8.2