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 1.63907e+01 4.47282e+00 91 2002 8 1.52704e+01 3.02737e+00 96 2002 9 1.11912e+01 8.92175e+00 93 2002 10 2.52848e+00 2.12906e+00 176 2002 11 2.10350e+00 1.66986e+00 224 2002 12 3.41124e+00 2.00351e+00 173 2003 1 1.03419e+00 9.55621e-01 208 2003 2 5.19881e+00 3.41331e+00 176 2003 3 2.42999e+00 2.49707e+00 112 2003 4 6.33961e+00 3.53471e+00 174 2003 5 1.52914e+01 5.68441e+00 101 2003 6 7.24242e+00 2.41258e+00 82 2003 7 4.35177e+00 4.72065e+00 64 2003 8 1.03047e+01 5.42688e+00 106 2003 9 5.11331e+00 6.32100e+00 128 2003 10 4.87651e+00 4.43272e+00 224 2003 11 7.70226e+00 2.89307e+00 264 2003 12 7.66093e+00 5.06270e+00 232 2004 1 8.29553e+00 4.27332e+00 112 2004 2 5.49483e+00 1.55104e+00 49 2004 3 1.01060e+01 4.63583e+00 179 2004 4 1.73071e+01 5.29395e+00 176 2004 5 2.10682e+01 4.61519e+00 185 2004 6 1.93329e+01 1.30902e+00 48 2004 7 2.13154e+01 3.35531e+00 64 2004 8 1.82120e+01 3.98697e+00 160 2004 9 1.13059e+01 1.04349e+01 88 2004 10 7.51855e+00 5.22685e+00 175 2004 11 3.16036e+00 2.88824e+00 160 2004 12 1.35449e+00 1.07917e+00 128 2005 1 4.54418e+00 3.08859e+00 187 2005 2 4.39714e+00 2.20380e+00 112 2005 3 7.92102e+00 3.74969e+00 161 2005 4 1.65351e+00 1.39750e+00 144 2005 5 8.37322e+00 3.64423e+00 208 2005 6 7.86050e+00 3.55689e+00 92 2005 7 1.20549e+01 9.31197e+00 96 2005 8 1.55275e+01 3.68895e+00 108 2005 9 2.14335e+00 2.05730e+00 144 2005 10 1.92979e+00 2.34725e+00 275 2005 11 2.79989e+00 1.82412e+00 236 2005 12 4.61950e+00 4.27350e+00 128 2006 1 4.56579e+00 3.02840e+00 192 2006 2 4.62824e+00 3.47336e+00 192 2006 3 1.25043e+01 3.41392e+00 225 2006 4 2.16087e+01 3.40257e+00 174 2006 5 2.11196e+01 3.35739e+00 192 2006 6 2.15159e+01 5.81969e+00 192 2006 7 2.69759e+01 3.58307e+00 64 2006 8 2.46822e+01 5.00015e+00 128 2006 9 1.44409e+01 5.62787e+00 191 2006 10 9.42370e+00 6.34220e+00 240 2006 11 4.58052e+00 2.03902e+00 208 2006 12 9.23592e+00 6.09874e+00 160 2007 1 3.72126e+00 2.40345e+00 128 2007 2 9.06874e+00 5.61308e+00 176 2007 3 1.45690e+01 6.27819e+00 304 2007 4 1.19075e+01 4.81243e+00 144 2007 5 1.81802e+01 4.62721e+00 155 2007 6 2.08178e+01 6.42840e+00 144 2007 7 2.32159e+01 1.39541e+00 64 2007 8 1.94315e+01 2.84363e+00 112 2007 9 3.93309e+00 3.20428e+00 141 2007 10 2.56009e+00 2.58372e+00 173 2007 11 6.31200e+00 4.36058e+00 256 2007 12 9.88628e+00 4.63508e+00 126 2008 1 7.18435e+00 5.68171e+00 192 2008 2 9.02154e+00 4.17576e+00 267 2008 3 3.61317e+00 4.52426e+00 192 2008 4 1.12656e+01 4.42955e+00 192 2008 5 1.22080e+01 4.02710e+00 155 2008 6 1.16320e+01 4.85627e+00 160 2008 7 1.24065e+01 1.70439e+00 96 2008 8 1.21936e+01 2.85821e+00 80 2008 9 2.30887e+00 1.96009e+00 144 2008 10 4.36602e+00 2.43133e+00 267 2008 11 7.78445e+00 2.79014e+00 253 2008 12 5.99044e+00 3.68532e+00 146 2009 1 6.98965e+00 2.70594e+00 186 2009 2 2.93985e+00 1.87037e+00 208 2009 3 1.43649e+01 6.45518e+00 224 2009 4 3.97125e+00 4.11692e+00 124 2009 5 7.96621e+00 7.17167e+00 112 2009 6 1.13511e+01 4.09633e+00 108 2009 7 1.95048e+01 9.70443e-01 48 2009 8 1.87865e+01 4.82243e+00 144 2009 9 1.36244e+01 5.53264e+00 144 2009 10 1.02514e+01 6.79996e+00 178 2009 11 3.40937e+00 2.25640e+00 178 2009 12 2.78553e-01 1.06608e-01 48 2010 1 2.54533e+00 2.19726e+00 208 2010 2 1.10094e+00 1.58051e+00 207 2010 3 2.46404e+00 3.22023e+00 143 2010 4 2.87663e+00 3.30348e+00 177 2010 5 8.24506e+00 4.17597e+00 159 2010 6 1.56246e+01 4.35321e+00 128 2010 7 1.31444e+01 2.86423e+00 80 2010 8 2.15231e+01 1.47932e+00 32 2010 9 1.13118e+01 3.18842e+00 240 2010 10 1.36930e+01 4.06262e+00 353 2010 11 7.50070e+00 3.26145e+00 210 2010 12 4.32931e+00 3.38342e+00 253 2011 1 1.77319e+00 1.90818e+00 208 2011 2 5.16284e+00 3.97013e+00 206 2011 3 1.03240e+01 4.28109e+00 240 2011 4 1.56002e+01 2.62854e+00 176 2011 5 1.57690e+01 6.34081e+00 208 2011 6 1.04591e+01 2.44460e+00 128 2011 7 1.55703e+01 2.06788e+00 128 2011 8 1.21993e+01 3.82170e+00 223 2011 9 8.37373e+00 4.17867e+00 200 2011 10 7.74692e+00 3.15688e+00 295 2011 11 8.05372e+00 3.61015e+00 217 2011 12 7.26591e+00 1.19356e+00 145 2012 1 8.18356e+00 3.14568e+00 227 2012 2 1.11584e+01 3.55222e+00 64 2012 3 1.03684e+01 5.85513e+00 240 2012 4 1.65598e+01 3.03082e+00 185 2012 5 1.94561e+01 2.27442e+00 160 2012 6 1.00267e+01 1.07959e+01 85 2012 7 2.55489e+01 2.39508e+00 109 2012 8 1.52609e+01 3.62526e+00 89 2012 9 4.40677e+00 2.78390e+00 154 2012 10 6.94612e+00 4.67980e+00 243 2012 11 5.61565e+00 4.06260e+00 288 2012 12 7.24739e+00 5.17886e+00 96 2013 1 1.04055e+01 4.68056e+00 112 2013 2 1.10212e+01 4.82196e+00 80 2013 3 1.96278e+00 2.44493e+00 234 2013 4 6.91809e+00 4.45004e+00 128 2013 5 1.43746e+01 6.45993e+00 176 2013 6 1.97152e+01 2.83690e+00 64 2013 7 1.50401e+01 5.18948e+00 50 2013 8 1.09800e+01 2.12011e+00 144 2013 9 7.99043e+00 2.98126e+00 208 2013 10 6.13104e+00 4.50601e+00 228 2013 11 6.25696e+00 2.57417e+00 181 2013 12 5.77811e+00 2.66158e+00 157 2014 1 5.55110e+00 1.35885e+00 96 2014 2 8.72096e+00 4.66607e+00 184 2014 3 3.33028e+00 2.37869e+00 120 2014 4 5.61870e+00 3.45287e+00 112 2014 5 1.94731e+00 1.57492e+00 144 2014 6 9.57987e+00 4.94293e+00 138 2014 7 1.07313e+01 2.80373e+00 64 2014 8 1.98271e+01 2.43422e+00 160 2014 9 1.81368e+01 5.80449e+00 144 2014 10 9.51192e+00 3.67483e+00 336 2014 11 6.72479e+00 2.58056e+00 224 2014 12 7.54797e+00 3.51315e+00 224 2015 1 3.00153e+00 2.24250e+00 160 2015 2 5.39692e+00 2.44875e+00 172 2015 3 5.24385e+00 3.75786e+00 96 2015 4 9.14804e+00 3.05186e+00 48 2015 5 1.20096e+01 3.50930e+00 176 2015 6 9.90588e+00 4.36282e+00 145 2015 7 1.72074e+01 3.24824e+00 80 2015 8 1.90432e+01 3.39233e+00 145 2015 9 6.88275e+00 4.01361e+00 128 2015 10 2.60168e+00 3.16874e+00 176 2015 11 4.65207e+00 3.57430e+00 176 2015 12 2.51202e+00 1.53762e+00 100 2016 1 8.51388e-01 9.20983e-01 148 2016 2 2.14601e+00 1.65586e+00 230 2016 3 6.41204e+00 2.76272e+00 144 2016 4 9.28041e-01 1.10396e+00 128 2016 5 7.98069e+00 4.69238e+00 160 2016 6 1.31608e+01 4.92468e+00 160 2016 7 5.62570e+00 3.45603e+00 109 2016 8 1.36217e+01 3.20241e+00 135 2016 9 1.36116e+01 4.32609e+00 150 2016 10 1.34237e+01 2.69673e+00 318 2016 11 1.19960e+01 2.00970e+00 225 2016 12 1.06051e+01 3.89573e+00 210 2017 1 6.15835e+00 4.28406e+00 153 2017 2 3.81562e+00 2.15535e+00 270 2017 3 6.84255e+00 4.22674e+00 174 2017 4 1.00947e+01 3.47681e+00 96 2017 5 1.13244e+01 6.15331e+00 137 2017 6 1.12915e+01 3.73050e+00 84 2017 7 1.10653e+01 4.93239e+00 88 2017 8 1.08270e+01 2.04487e+00 90 2017 9 1.07213e+01 3.63355e+00 190 2017 10 3.96395e+00 2.75521e+00 190 2017 11 8.09562e+00 3.23205e+00 272 2017 12 4.05773e+00 2.85728e+00 128 2018 1 1.01766e+01 3.97050e+00 221 2018 2 1.78643e+01 1.67500e+00 134 2018 3 1.29738e+01 3.12100e+00 208 2018 4 1.31365e+01 5.83189e+00 194 2018 5 1.43720e+01 7.00063e+00 128 2018 6 1.08703e+01 1.82920e+00 66 2018 7 1.73576e+01 3.05428e+00 96 2018 8 1.24297e+01 5.72883e+00 58 2018 9 1.24952e+01 5.74622e+00 217 2018 10 3.15744e+00 5.65551e+00 256 2018 11 1.88366e-01 2.22335e-01 112 2018 12 1.78776e-01 2.14633e-01 104 2019 1 3.56813e-01 3.69955e-01 176 2019 2 1.35234e+00 1.45246e+00 80 2019 3 3.83844e+00 2.73085e+00 160 2019 4 5.29055e+00 4.14708e+00 107 2019 5 1.34012e+01 4.58802e+00 224 2019 6 1.68734e+01 3.97770e+00 96 2019 7 1.01849e+01 4.51119e+00 98 2019 8 1.62091e+01 1.94050e+00 96 2019 9 9.56084e+00 3.26287e+00 265 2019 10 6.70731e+00 4.00262e+00 155 2019 11 2.47270e+00 2.10273e+00 176 2019 12 2.29551e+00 1.33994e+00 112 2020 1 4.40365e+00 2.56266e+00 144 2020 2 2.78617e+00 1.57653e+00 128 2020 3 1.32694e+01 4.69415e+00 164 2020 4 5.76534e+00 3.30146e+00 192 2020 5 6.66208e+00 4.05065e+00 115 2020 6 1.46574e+01 5.14296e+00 111 2020 7 1.28944e+01 6.44106e+00 57 2020 8 1.89448e+01 1.28318e+00 64 2020 9 4.37768e+00 3.13974e+00 80 2020 10 6.68723e-01 1.02868e+00 224 2020 11 8.65283e-01 1.46069e+00 229 2020 12 2.67728e+00 1.96322e+00 256 2021 1 2.49821e+00 2.92465e+00 144 2021 2 3.89636e+00 3.05558e+00 95 2021 3 3.97853e+00 4.00478e+00 136 2021 4 7.67118e+00 3.43918e+00 160 2021 5 1.06278e+01 4.23164e+00 101 2021 6 1.17127e+01 5.68525e+00 84 2021 7 9.61055e+00 4.69099e+00 112 2021 8 5.30625e+00 3.60967e+00 100 2021 9 1.95995e+00 3.17627e+00 96 2021 10 1.73629e+00 2.71237e+00 111 2021 11 2.29389e+00 1.52047e+00 252 2021 12 3.12586e+00 1.84888e+00 128 2022 1 4.41259e+00 2.91145e+00 208 2022 2 7.81824e+00 3.88080e+00 158 2022 3 1.33691e+01 4.38202e+00 208 2022 4 1.11447e+01 5.89296e+00 64 2022 5 1.32842e+01 1.14986e+01 112 2022 6 2.62505e+01 3.40569e+00 192 2022 7 1.57697e+01 4.67745e+00 128 2022 8 9.82197e+00 5.84665e+00 144 2022 9 7.14825e+00 4.43523e+00 176 2022 10 6.69193e+00 2.90355e+00 288 2022 11 9.71182e+00 3.21722e+00 128 2022 12 9.67086e+00 4.41617e+00 190 2023 1 1.14963e+01 4.05558e+00 214 2023 2 8.85227e+00 3.81855e+00 148 2023 3 1.53234e+01 5.64707e+00 146 2023 4 1.34861e+01 5.58585e+00 96 2023 5 1.77166e+01 4.18451e+00 80 2023 6 2.17092e+01 2.67706e+00 74 2023 7 1.71109e+01 1.32152e+00 80 2023 8 1.02824e+01 4.14588e+00 128 2023 9 6.62519e+00 4.84125e+00 141 2023 10 5.24733e+00 3.11327e+00 260 2023 11 3.49998e+00 2.85046e+00 142 2023 12 1.79318e+00 8.58583e-01 80 2024 1 1.47136e+00 1.64112e+00 132 2024 2 2.83162e+00 1.75201e+00 128 2024 3 2.64092e+00 2.31786e+00 80 2024 4 nan nan 0