JanFebMarAprMayJunJulAugSepOctNovDec
18.412.110.811.615.726.621.624.920.916.5  
211.113.910.014.617.226.321.824.020.715.2  
310.411.611.415.214.718.020.022.622.013.7  
48.79.88.315.918.917.119.721.719.813.2  
59.210.86.218.415.318.021.222.919.816.3  
69.89.411.112.819.116.820.426.919.216.7  
712.311.013.218.422.220.321.032.321.916.6  
812.011.812.222.923.019.720.933.324.217.6  
913.012.712.323.624.518.319.432.822.816.2  
109.810.215.223.119.715.920.428.820.314.3  
1110.88.813.825.014.621.222.733.719.715.4  
1212.39.311.123.515.920.624.435.021.714.4  
1310.910.412.314.214.720.924.828.422.112.8  
1412.611.613.514.015.821.720.920.727.416.7  
1510.312.711.118.619.022.419.820.127.815.6  
1612.310.313.221.718.922.726.121.926.915.2  
179.111.113.213.419.323.426.323.822.913.8  
187.910.713.813.721.417.624.624.022.912.8  
197.89.99.419.623.518.621.820.524.415.7  
208.610.410.820.124.521.123.822.825.218.5  
218.411.013.621.126.021.024.721.425.4   
226.914.413.923.120.422.124.022.122.1   
237.214.811.224.418.426.124.421.218.0   
247.111.314.121.921.330.024.823.015.7   
258.79.014.618.624.430.919.221.316.4   
269.99.215.919.425.624.721.922.715.8   
279.49.215.320.225.719.321.317.417.2   
288.211.414.011.423.619.722.020.717.8   
2910.58.910.414.523.919.322.118.219.5   
3012.610.213.325.718.926.719.716.9   
3111.412.825.529.719.9  
Avg: 9.911.012.218.320.621.322.724.221.2* 15.4  
Hi: 13.014.815.925.026.030.929.735.027.8* 18.5  
Lo: 6.98.86.211.414.615.919.217.415.7* 12.8  
Note:  *Incomplete dataset.
AvgJanFebMarAprMayJunJulAugSepOctNovDec
20209.911.012.218.320.621.322.724.221.2* 15.4  
20197.911.613.116.418.620.925.123.420.515.310.610.2
201810.07.79.915.121.023.927.523.420.316.312.410.8
2017* 8.710.414.215.919.122.423.021.718.616.811.89.4
201610.210.111.914.019.520.923.224.121.616.711.610.8
20159.98.912.217.117.321.622.321.319.416.313.813.8
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* 9.39.812.015.919.1* 21.824.423.120.4* 16.111.910.7