JanFebMarAprMayJunJulAugSepOctNovDec
1-6.616.231.252.757.469.083.488.1    
221.8-1.029.454.555.870.083.985.8    
322.417.118.737.755.075.184.880.7    
45.212.126.255.061.376.882.797.8    
5-1.741.022.146.366.371.780.291.0    
6-15.830.524.348.273.860.783.271.8    
714.549.537.948.978.267.878.069.9    
819.842.732.954.270.674.483.389.2    
95.335.715.661.158.074.287.689.0    
1012.347.927.555.368.481.380.483.5    
1140.037.310.750.071.985.176.575.7    
1239.014.449.535.463.282.979.186.5    
1334.339.037.326.960.179.883.383.3    
1422.214.046.824.064.972.487.586.7    
1533.925.563.321.669.067.888.7     
1636.620.452.931.672.475.690.0     
1737.728.851.335.369.884.697.1     
1840.237.059.636.668.996.892.8     
19-2.951.157.337.455.595.579.7     
2013.045.960.950.344.480.389.6     
2136.8-3.549.940.347.373.186.3     
2229.6-4.847.544.159.383.291.1     
2338.32.551.537.467.191.979.0     
2427.37.064.435.264.188.478.3     
256.216.444.042.371.164.581.2     
2635.730.334.344.878.275.076.6     
2731.540.740.750.678.383.075.0     
2831.345.352.261.776.779.377.8     
2933.048.643.370.391.986.8     
3041.234.449.858.174.992.3     
3138.247.063.178.2   
Avg: 23.226.441.043.865.178.283.7* 84.2    
Hi: 41.251.164.461.778.396.897.1* 97.8    
Lo: -15.8-4.810.721.644.460.775.0* 69.9    
Note:  *Incomplete dataset.
AvgJanFebMarAprMayJunJulAugSepOctNovDec
202223.226.441.043.865.178.283.7* 84.2    
202131.418.251.155.467.686.089.785.478.160.245.324.8
202022.631.344.152.165.681.684.585.471.647.947.734.9
201920.26.831.253.461.576.482.177.369.347.136.426.3
201823.919.034.446.574.981.184.284.167.551.831.731.8
201719.630.639.056.570.279.989.178.372.059.640.227.2
201623.936.9* 51.654.9* 69.979.2* 82.481.670.858.551.518.9
2015* 26.020.5* 49.257.564.3* 76.482.083.5* 78.059.943.6* 27.4
201423.417.8* 34.751.5* 64.571.979.0* 77.070.5* 58.628.827.2
2013* 22.128.930.2* 43.6* 65.774.281.3* 82.774.150.3* 36.215.0
2012* 33.232.756.5* 58.867.078.2* 87.780.574.7* 51.8* 36.822.2
2011* 15.020.3* 27.447.3* 61.3* 72.482.3* 79.170.5* 57.9* 42.233.0
201017.1* 18.139.859.4* 64.774.081.282.165.5* 58.336.516.9
200916.920.629.249.966.6* 72.0* 76.577.6* 76.644.550.2* 15.3
200823.825.441.754.964.773.383.382.469.156.438.416.6
200728.418.447.453.4* 53.478.487.978.972.557.841.626.6
200634.729.040.663.169.879.191.084.368.051.741.635.0
200519.535.742.959.763.377.185.180.675.458.641.927.9
2004  * 50.858.262.672.081.375.772.257.047.131.2
Avg* 23.6* 24.3* 41.2* 53.7* 65.4* 76.9* 83.9* 81.1* 72.0* 54.9* 41.0* 25.5
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