YEAR MONTH MEAN STDEV COUNT 2002 1 nan nan 0 2002 2 nan nan 0 2002 3 nan nan 0 2002 4 nan nan 0 2002 5 nan nan 0 2002 6 nan nan 0 2002 7 1.29492e+01 1.24458e+00 96 2002 8 9.10472e+00 2.02958e+00 64 2002 9 4.73534e+00 2.78355e+00 39 2002 10 6.68918e+00 2.43839e+00 111 2002 11 2.17329e+00 1.15381e+00 160 2002 12 1.61621e+00 1.07310e+00 178 2003 1 7.41504e-01 5.12170e-01 192 2003 2 1.91418e+00 1.26906e+00 176 2003 3 2.38353e+00 2.16202e+00 107 2003 4 3.56488e+00 2.40926e+00 128 2003 5 1.01673e+01 4.95469e+00 96 2003 6 1.11288e+00 6.10944e-01 62 2003 7 5.12432e+00 2.23838e-01 32 2003 8 2.96501e+00 1.74828e+00 88 2003 9 6.78866e-01 8.95903e-01 104 2003 10 2.59206e+00 2.61426e+00 206 2003 11 5.64181e+00 3.22606e+00 176 2003 12 1.25897e+00 6.58780e-01 144 2004 1 2.65311e+00 8.44698e-01 176 2004 2 2.40390e+00 5.68385e-01 32 2004 3 4.96592e+00 2.77803e+00 192 2004 4 4.70000e+00 2.75838e+00 160 2004 5 9.46656e+00 2.15304e+00 237 2004 6 6.30579e+00 2.90759e+00 86 2004 7 4.88708e+00 2.28562e+00 60 2004 8 5.30219e+00 1.98025e+00 96 2004 9 1.62801e+00 2.15575e+00 144 2004 10 5.09730e+00 2.64482e+00 98 2004 11 2.65395e+00 1.09845e+00 96 2004 12 7.85246e-01 2.61119e-01 128 2005 1 1.56495e+00 6.49959e-01 116 2005 2 2.75615e+00 2.69555e+00 127 2005 3 2.09461e+00 7.96839e-01 192 2005 4 3.97821e+00 1.23785e+00 128 2005 5 8.65608e+00 2.46903e+00 128 2005 6 7.43472e+00 3.65515e+00 80 2005 7 1.82786e+00 2.65371e+00 81 2005 8 1.15951e+01 3.06208e+00 80 2005 9 1.22072e+00 2.38955e+00 159 2005 10 3.94827e+00 2.55778e+00 208 2005 11 3.47639e+00 2.73642e+00 233 2005 12 1.55675e+00 9.95749e-01 112 2006 1 1.49735e+00 1.10736e+00 178 2006 2 1.93476e+00 1.23555e+00 141 2006 3 3.90862e+00 1.82945e+00 212 2006 4 1.03333e+01 3.25112e+00 206 2006 5 7.84705e+00 3.44758e+00 192 2006 6 6.29808e+00 3.58653e+00 179 2006 7 1.27387e+01 1.19523e+00 64 2006 8 9.01469e+00 4.42606e+00 129 2006 9 6.37001e+00 2.43096e+00 144 2006 10 6.50294e+00 3.23909e+00 240 2006 11 1.98966e+00 1.19071e+00 208 2006 12 3.09830e+00 8.57874e-01 128 2007 1 1.48576e+00 7.26164e-01 96 2007 2 1.45522e+00 8.05724e-01 144 2007 3 3.60808e+00 1.86854e+00 252 2007 4 1.08377e+01 4.47816e+00 192 2007 5 1.20568e+01 2.38872e+00 112 2007 6 1.09177e+01 3.05326e+00 128 2007 7 1.35469e+01 2.64620e+00 85 2007 8 9.31045e+00 1.41459e+00 48 2007 9 7.07247e+00 1.38425e+00 80 2007 10 4.52504e+00 1.60301e+00 180 2007 11 2.25071e+00 1.48635e+00 220 2007 12 3.70805e+00 1.36136e+00 80 2008 1 2.05791e+00 1.18364e+00 128 2008 2 3.38520e+00 1.35263e+00 209 2008 3 2.14261e+00 7.70041e-01 154 2008 4 7.75410e+00 4.35879e+00 144 2008 5 1.26878e+01 3.59610e+00 112 2008 6 1.61297e+00 9.78024e-01 153 2008 7 1.45164e+00 6.23792e-01 45 2008 8 2.90050e+00 9.85732e-01 111 2008 9 2.28385e+00 2.05363e+00 144 2008 10 2.34862e+00 1.86930e+00 216 2008 11 1.65105e+00 9.42451e-01 193 2008 12 3.12327e+00 1.70315e+00 132 2009 1 1.58247e+00 1.11560e+00 160 2009 2 1.33976e+00 1.01988e+00 173 2009 3 4.36268e+00 2.96409e+00 116 2009 4 7.98129e+00 1.53533e+00 79 2009 5 4.85051e+00 2.79552e+00 89 2009 6 1.97116e+00 1.42639e+00 128 2009 7 4.53991e+00 5.41394e-01 35 2009 8 4.95630e+00 1.15702e+00 42 2009 9 7.51199e+00 6.92324e-01 80 2009 10 4.55886e+00 2.70199e+00 128 2009 11 3.10668e+00 2.21574e+00 135 2009 12 1.33064e+00 3.56430e-01 48 2010 1 2.19686e+00 8.47686e-01 160 2010 2 6.36318e-01 7.09824e-01 128 2010 3 4.73798e-01 6.00447e-01 160 2010 4 2.31761e+00 1.46900e+00 197 2010 5 7.14426e+00 2.43729e+00 192 2010 6 6.82978e+00 1.83477e+00 138 2010 7 8.35628e+00 1.87400e+00 64 2010 8 4.03363e+00 1.80520e+00 80 2010 9 3.09096e+00 1.29548e+00 164 2010 10 5.44185e+00 1.18180e+00 327 2010 11 3.54707e+00 1.25562e+00 224 2010 12 1.06699e+00 6.66390e-01 176 2011 1 6.33022e-01 7.80437e-01 168 2011 2 2.13923e+00 2.03931e+00 208 2011 3 6.53105e+00 2.65342e+00 160 2011 4 7.36652e+00 2.71529e+00 160 2011 5 7.07426e+00 3.07764e+00 126 2011 6 3.00234e+00 1.65373e+00 176 2011 7 2.18064e+00 1.32537e+00 117 2011 8 2.17116e+00 7.25083e-01 168 2011 9 2.20388e+00 1.81559e+00 137 2011 10 2.44989e+00 1.51846e+00 318 2011 11 2.78260e+00 2.07456e+00 144 2011 12 1.74659e+00 4.62468e-01 134 2012 1 1.78659e+00 1.20935e+00 224 2012 2 1.85715e+00 1.05785e+00 64 2012 3 7.22414e+00 3.15329e+00 208 2012 4 1.23333e+01 3.20656e+00 198 2012 5 1.58723e+01 3.34471e+00 196 2012 6 7.91870e+00 6.64255e+00 112 2012 7 1.15243e+01 3.96110e+00 101 2012 8 4.01309e+00 1.05422e+00 80 2012 9 5.69791e+00 3.02413e+00 107 2012 10 6.43727e+00 3.14362e+00 208 2012 11 3.37689e+00 2.24071e+00 242 2012 12 4.37898e+00 2.71020e+00 96 2013 1 3.69082e+00 1.85792e+00 128 2013 2 2.10616e+00 8.21359e-01 80 2013 3 7.29706e-01 6.27964e-01 171 2013 4 6.81753e+00 4.14240e+00 69 2013 5 9.79854e+00 4.95609e+00 144 2013 6 7.30218e+00 2.58323e+00 80 2013 7 4.26045e+00 2.82001e+00 80 2013 8 2.60093e+00 2.61802e+00 110 2013 9 3.54323e+00 2.56562e+00 168 2013 10 4.08138e+00 2.24539e+00 195 2013 11 2.32269e+00 8.81883e-01 128 2013 12 3.43622e+00 2.06604e+00 117 2014 1 2.35088e+00 1.26775e+00 109 2014 2 1.68383e+00 1.15347e+00 128 2014 3 2.47980e+00 7.48537e-01 145 2014 4 3.50189e+00 5.50190e-01 112 2014 5 2.66860e+00 2.68046e+00 144 2014 6 6.73766e+00 3.11403e+00 126 2014 7 1.89807e+00 6.27134e-01 48 2014 8 3.78973e+00 1.63192e+00 144 2014 9 1.06391e+01 2.68357e+00 144 2014 10 6.01295e+00 1.68320e+00 285 2014 11 2.94450e+00 2.40156e+00 208 2014 12 3.08184e+00 2.01077e+00 176 2015 1 2.51445e+00 2.26327e+00 160 2015 2 2.05249e+00 9.73161e-01 187 2015 3 5.93024e+00 2.91723e+00 176 2015 4 9.03167e+00 8.21826e-01 48 2015 5 1.02706e+01 1.31894e+00 160 2015 6 1.41368e+01 3.24514e+00 132 2015 7 7.67297e+00 3.23321e+00 140 2015 8 7.48687e+00 1.66723e+00 92 2015 9 6.51626e+00 1.29372e+00 112 2015 10 3.52201e+00 2.29991e+00 182 2015 11 2.10883e+00 1.57287e+00 127 2015 12 2.46685e+00 2.06636e+00 110 2016 1 1.20793e+00 4.81813e-01 156 2016 2 7.77911e-01 5.79479e-01 224 2016 3 1.22203e+00 1.02601e+00 112 2016 4 1.72551e+00 1.29632e+00 144 2016 5 6.19533e+00 3.31776e+00 208 2016 6 7.40493e+00 4.35700e+00 148 2016 7 1.24866e+00 1.21317e+00 128 2016 8 6.35220e+00 1.67033e+00 104 2016 9 7.03826e+00 1.48300e+00 128 2016 10 7.27264e+00 2.17061e+00 305 2016 11 4.26688e+00 1.78177e+00 176 2016 12 2.97767e+00 1.57032e+00 218 2017 1 2.73079e+00 1.72473e+00 144 2017 2 1.27722e+00 5.52879e-01 272 2017 3 4.19902e+00 1.73167e+00 129 2017 4 5.78359e+00 3.13333e+00 125 2017 5 4.79840e+00 4.76153e+00 112 2017 6 2.31373e+00 5.21617e-01 32 2017 7 2.16362e+00 1.82563e+00 96 2017 8 2.03768e+00 1.26070e+00 47 2017 9 2.09321e+00 1.59583e+00 160 2017 10 2.33388e+00 1.19217e+00 180 2017 11 2.74188e+00 1.37746e+00 192 2017 12 1.34599e+00 4.04373e-01 96 2018 1 1.20636e+00 7.51862e-01 176 2018 2 7.34857e+00 3.04100e+00 93 2018 3 6.68501e+00 2.46887e+00 180 2018 4 8.93017e+00 3.20234e+00 160 2018 5 5.40507e+00 1.62597e+00 128 2018 6 3.84640e+00 1.57877e+00 80 2018 7 2.30007e+00 1.63536e+00 112 2018 8 4.66556e+00 2.24527e+00 46 2018 9 1.17591e+01 3.62274e+00 201 2018 10 2.22703e+00 3.97282e+00 192 2018 11 4.51247e+00 2.49010e+00 80 2018 12 1.45759e+00 3.83722e-01 80 2019 1 5.10999e-01 4.92770e-01 176 2019 2 1.29489e+00 6.43296e-01 40 2019 3 1.34968e+00 1.20063e+00 191 2019 4 4.06562e+00 2.11219e+00 112 2019 5 4.44416e+00 1.59031e+00 224 2019 6 2.21557e+00 2.13377e+00 80 2019 7 3.72805e+00 1.95368e+00 80 2019 8 3.85721e+00 1.47039e+00 128 2019 9 1.61514e+00 1.24771e+00 288 2019 10 3.99456e+00 1.48646e+00 92 2019 11 2.91090e+00 2.32708e+00 194 2019 12 1.69238e+00 4.81748e-01 100 2020 1 3.91416e+00 3.23433e+00 144 2020 2 1.57289e+00 1.05947e+00 110 2020 3 8.56814e+00 4.32653e+00 174 2020 4 2.58374e+00 2.06560e+00 144 2020 5 2.29722e+00 1.47247e+00 128 2020 6 6.40012e+00 2.56198e+00 85 2020 7 5.40718e+00 3.14106e+00 64 2020 8 8.28731e+00 1.91013e+00 70 2020 9 7.53989e-01 4.71491e-01 96 2020 10 1.87598e+00 2.22228e+00 160 2020 11 7.73770e-01 8.48286e-01 222 2020 12 1.47853e+00 6.75374e-01 163 2021 1 1.46808e+00 9.53707e-01 112 2021 2 1.40643e+00 1.27906e+00 96 2021 3 3.28422e+00 1.80121e+00 113 2021 4 8.84722e+00 3.62846e+00 166 2021 5 1.13788e+01 3.21042e+00 128 2021 6 9.94080e+00 3.06672e+00 80 2021 7 5.76924e+00 2.20035e+00 141 2021 8 4.77989e+00 2.31784e+00 88 2021 9 2.98585e+00 1.36580e+00 79 2021 10 5.42158e+00 2.77420e+00 97 2021 11 2.45851e+00 1.28416e+00 208 2021 12 2.71307e+00 1.10725e+00 112 2022 1 2.94509e+00 2.52593e+00 216 2022 2 3.78261e+00 2.96952e+00 158 2022 3 5.43295e+00 2.16288e+00 224 2022 4 6.41331e+00 1.62597e+00 32 2022 5 1.31077e+01 3.78538e+00 141 2022 6 1.68313e+01 3.30295e+00 144 2022 7 1.14831e+01 3.36521e+00 103 2022 8 2.46946e+00 4.87234e+00 73 2022 9 5.85389e+00 2.02724e+00 128 2022 10 3.81748e+00 1.90292e+00 266 2022 11 5.32109e+00 2.45104e+00 117 2022 12 5.37746e+00 2.68774e+00 128 2023 1 4.44985e+00 2.23728e+00 208 2023 2 4.50168e+00 2.24703e+00 209 2023 3 2.89815e+00 1.21773e+00 192 2023 4 9.61072e+00 2.05582e+00 103 2023 5 9.01107e+00 1.78627e+00 160 2023 6 9.03892e+00 2.29381e+00 109 2023 7 2.95806e+00 7.80516e-01 112 2023 8 1.76046e+00 1.16916e+00 144 2023 9 1.31390e+00 1.51900e+00 83 2023 10 3.84908e+00 1.39037e+00 192 2023 11 1.94084e+00 1.08747e+00 160 2023 12 1.72487e+00 6.65934e-01 56 2024 1 2.00316e+00 4.98465e-01 96 2024 2 9.69202e-01 5.16605e-01 128 2024 3 3.46415e+00 1.70716e+00 69 2024 4 nan nan 0