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 4.94203e+00 4.55444e-01 24 2002 8 4.65659e+00 1.51692e+00 48 2002 9 4.37737e+00 2.10312e+00 92 2002 10 3.41095e+00 7.94100e-01 96 2002 11 4.22732e+00 8.64278e-01 144 2002 12 3.17536e+00 7.43717e-01 128 2003 1 3.72127e+00 7.38517e-01 112 2003 2 3.96522e+00 8.20169e-01 128 2003 3 5.16583e+00 1.17753e+00 28 2003 4 5.41359e+00 8.12053e-01 98 2003 5 4.46154e+00 2.40576e-01 32 2003 6 5.03600e+00 4.97692e-01 32 2003 7 3.59976e+00 7.73849e-01 48 2003 8 2.40896e+00 3.70137e-01 47 2003 9 3.23661e+00 9.33682e-01 112 2003 10 3.25616e+00 9.35191e-01 152 2003 11 2.99666e+00 6.56316e-01 176 2003 12 3.33942e+00 7.66587e-01 164 2004 1 2.53350e+00 6.67055e-01 131 2004 2 4.15505e+00 4.57221e-01 32 2004 3 3.86836e+00 6.06847e-01 160 2004 4 3.97286e+00 1.02186e+00 136 2004 5 3.20944e+00 7.17993e-01 112 2004 6 3.39932e+00 5.56095e-02 16 2004 7 3.94204e+00 5.13148e-01 60 2004 8 3.86454e+00 1.38634e+00 50 2004 9 4.10474e+00 1.40361e+00 46 2004 10 4.11625e+00 1.02659e+00 78 2004 11 3.68525e+00 1.03522e+00 144 2004 12 5.69444e+00 2.83724e-01 49 2005 1 3.47441e+00 6.26756e-01 136 2005 2 3.37816e+00 5.36724e-01 140 2005 3 4.65728e+00 9.16038e-01 144 2005 4 4.89362e+00 8.41557e-02 16 2005 5 3.76274e+00 9.12250e-01 91 2005 6 3.95292e+00 4.11869e-01 40 2005 7 4.60605e+00 8.03103e-01 74 2005 8 7.19011e+00 1.58126e-01 11 2005 9 2.40674e+00 9.40952e-01 58 2005 10 2.97584e+00 7.09975e-01 255 2005 11 3.14755e+00 8.84451e-01 193 2005 12 3.41763e+00 5.80297e-01 120 2006 1 4.78441e+00 9.65355e-01 74 2006 2 4.97845e+00 8.69750e-01 141 2006 3 5.21857e+00 1.01755e+00 160 2006 4 3.84596e+00 6.48457e-01 127 2006 5 3.96395e+00 9.53093e-01 128 2006 6 3.51223e+00 1.78543e-01 16 2006 7 3.80660e+00 1.44061e-01 32 2006 8 3.61796e+00 5.25645e-01 75 2006 9 3.41654e+00 4.18615e-01 132 2006 10 3.72997e+00 1.29743e+00 203 2006 11 4.12840e+00 1.52992e+00 208 2006 12 3.82139e+00 9.65451e-01 128 2007 1 3.11818e+00 6.27280e-01 78 2007 2 3.44524e+00 6.38243e-01 153 2007 3 3.68045e+00 7.72724e-01 244 2007 4 4.18603e+00 7.84787e-01 157 2007 5 5.39058e+00 1.45872e+00 64 2007 6 4.48901e+00 1.38169e+00 25 2007 7 4.66879e+00 5.71924e-01 94 2007 8 4.22478e+00 6.18646e-01 48 2007 9 6.53838e+00 9.62061e-01 48 2007 10 5.47484e+00 1.30796e+00 126 2007 11 4.08232e+00 8.02101e-01 240 2007 12 3.74367e+00 4.44505e-01 96 2008 1 3.80537e+00 7.46644e-01 112 2008 2 4.35068e+00 1.14604e+00 193 2008 3 4.18452e+00 1.23801e+00 72 2008 4 4.85842e+00 8.27865e-01 85 2008 5 4.74974e+00 7.55440e-01 96 2008 6 4.26223e+00 9.58001e-01 138 2008 7 4.11617e+00 1.24425e+00 47 2008 8 2.82275e+00 1.70827e-01 16 2008 9 3.44905e+00 1.51947e+00 150 2008 10 4.38012e+00 1.21338e+00 256 2008 11 3.40388e+00 6.15796e-01 239 2008 12 4.47965e+00 1.70155e+00 140 2009 1 4.58643e+00 1.09435e+00 127 2009 2 3.52447e+00 8.83517e-01 206 2009 3 4.54264e+00 1.25237e+00 99 2009 4 5.38711e+00 1.12876e+00 24 2009 5 4.76525e+00 5.77844e-01 64 2009 6 4.41751e+00 5.67482e-01 32 2009 7 3.35834e+00 3.53684e-01 22 2009 8 3.24932e+00 1.35825e+00 57 2009 9 3.64926e+00 2.04494e+00 75 2009 10 4.18648e+00 8.55362e-01 179 2009 11 4.46279e+00 1.12567e+00 142 2009 12 5.74039e+00 1.21911e-01 16 2010 1 7.28010e+00 1.98877e+00 11 2010 2 9.10099e+00 1.13095e+00 48 2010 3 7.28494e+00 1.08223e+00 112 2010 4 5.32015e+00 1.16381e+00 129 2010 5 4.42765e+00 8.66669e-01 48 2010 6 4.04229e+00 7.95123e-01 96 2010 7 3.77511e+00 5.99667e-01 49 2010 8 4.95440e+00 3.43141e-02 8 2010 9 3.98459e+00 1.11179e+00 144 2010 10 3.86732e+00 8.33484e-01 310 2010 11 3.99014e+00 8.83901e-01 272 2010 12 3.79746e+00 1.13255e+00 160 2011 1 3.77013e+00 9.05810e-01 174 2011 2 3.84664e+00 5.95839e-01 131 2011 3 4.24528e+00 7.46270e-01 159 2011 4 4.36963e+00 6.52470e-01 128 2011 5 3.93440e+00 5.32106e-01 80 2011 6 4.21235e+00 7.54501e-01 104 2011 7 3.86611e+00 3.92248e-01 48 2011 8 4.75208e+00 1.16473e+00 86 2011 9 3.95678e+00 5.15753e-01 153 2011 10 4.28950e+00 1.02716e+00 182 2011 11 5.34793e+00 1.17237e+00 128 2011 12 4.89670e+00 9.36943e-01 183 2012 1 4.45205e+00 1.20946e+00 187 2012 2 4.75589e+00 1.07206e+00 59 2012 3 4.70379e+00 1.61483e+00 150 2012 4 4.39948e+00 1.23174e+00 189 2012 5 4.61693e+00 9.69326e-01 111 2012 6 4.72589e+00 1.73913e-01 16 2012 7 3.64315e+00 1.00975e+00 76 2012 8 4.11822e+00 1.81331e+00 30 2012 9 4.61526e+00 1.13757e+00 71 2012 10 4.43103e+00 1.06683e+00 176 2012 11 2.90180e+00 5.68863e-01 197 2012 12 2.53650e+00 1.37495e+00 100 2013 1 3.34251e+00 7.81758e-01 88 2013 2 4.05755e+00 1.03835e+00 89 2013 3 4.68517e+00 9.88449e-01 64 2013 4 5.12165e+00 1.11164e+00 29 2013 5 4.50845e+00 1.27849e+00 63 2013 6 4.59927e+00 9.17956e-01 32 2013 7 4.39936e+00 6.70967e-01 22 2013 8 3.18678e+00 4.95217e-01 41 2013 9 3.21908e+00 1.04953e+00 128 2013 10 3.62916e+00 7.86239e-01 168 2013 11 3.83336e+00 9.79004e-01 82 2013 12 3.92943e+00 9.91955e-01 107 2014 1 5.46067e+00 1.12735e+00 69 2014 2 4.71631e+00 1.70175e+00 121 2014 3 4.53064e+00 9.89626e-01 33 2014 4 4.31330e+00 3.98370e-01 48 2014 5 4.10361e+00 9.67531e-01 94 2014 6 4.07673e+00 8.96807e-01 52 2014 7 3.38618e+00 2.38648e-01 57 2014 8 3.13815e+00 7.28315e-01 63 2014 9 4.16623e+00 1.22590e+00 144 2014 10 3.33484e+00 5.60203e-01 272 2014 11 3.19904e+00 1.04279e+00 150 2014 12 2.26685e+00 5.25557e-01 144 2015 1 3.84869e+00 1.14520e+00 95 2015 2 3.57162e+00 1.16447e+00 96 2015 3 4.27352e+00 6.16289e-01 121 2015 4 3.95800e+00 6.33432e-01 25 2015 5 4.79863e+00 1.14126e+00 135 2015 6 3.83946e+00 1.06130e+00 59 2015 7 5.45498e+00 4.26040e-01 44 2015 8 4.79086e+00 1.43514e+00 32 2015 9 4.72008e+00 1.62656e+00 99 2015 10 4.48732e+00 1.30659e+00 145 2015 11 3.94048e+00 9.18994e-01 128 2015 12 3.64586e+00 1.39306e+00 137 2016 1 8.21349e+00 1.76394e-01 12 2016 2 8.06602e+00 1.02868e+00 59 2016 3 6.43492e+00 5.67332e-01 44 2016 4 4.33992e+00 5.44518e-01 39 2016 5 3.38920e+00 6.70175e-01 112 2016 6 3.45071e+00 3.45606e-01 112 2016 7 3.80267e+00 5.59165e-01 160 2016 8 3.78259e+00 1.63085e+00 120 2016 9 2.91244e+00 9.53239e-01 99 2016 10 4.43788e+00 1.45796e+00 272 2016 11 3.09629e+00 8.55718e-01 188 2016 12 3.64806e+00 4.15179e-01 113 2017 1 4.86693e+00 7.94360e-01 27 2017 2 4.77160e+00 1.03661e+00 101 2017 3 4.96899e+00 1.95080e+00 168 2017 4 4.52036e+00 1.12307e+00 100 2017 5 4.21061e+00 1.03448e+00 79 2017 6 3.85844e+00 9.29488e-01 44 2017 7 3.27305e+00 1.31258e+00 53 2017 8 3.12745e+00 1.26442e+00 48 2017 9 3.73172e+00 1.36997e+00 104 2017 10 4.59794e+00 1.65049e+00 193 2017 11 3.64359e+00 7.78741e-01 236 2017 12 3.46676e+00 7.01622e-01 111 2018 1 3.87469e+00 1.24742e+00 201 2018 2 4.15024e+00 1.90797e+00 80 2018 3 3.99468e+00 1.21202e+00 176 2018 4 3.53417e+00 4.70928e-01 135 2018 5 4.21650e+00 5.93596e-01 91 2018 6 3.06475e+00 4.30963e-01 49 2018 7 2.93692e+00 5.53207e-01 78 2018 8 3.47179e+00 1.69447e-01 16 2018 9 2.39187e+00 1.12071e+00 168 2018 10 3.02856e+00 1.53220e+00 241 2018 11 2.92644e+00 9.37808e-01 84 2018 12 3.55103e+00 1.41959e-01 20 2019 1 7.71701e+00 5.90220e-02 11 2019 2 6.17769e+00 7.03500e-01 48 2019 3 3.94008e+00 7.54529e-01 171 2019 4 4.33338e+00 4.26313e-01 73 2019 5 3.45741e+00 7.58929e-01 140 2019 6 3.78340e+00 8.46570e-01 85 2019 7 3.89774e+00 9.59857e-01 70 2019 8 2.57265e+00 5.14065e-01 129 2019 9 3.81355e+00 1.40248e+00 217 2019 10 4.21259e+00 9.85313e-01 144 2019 11 3.45717e+00 1.36957e+00 153 2019 12 3.84208e+00 1.03297e+00 53 2020 1 4.54802e+00 4.69066e-01 48 2020 2 3.71808e+00 7.63462e-01 34 2020 3 7.07838e+00 1.06579e+00 50 2020 4 4.58088e+00 1.14846e+00 34 2020 5 5.08082e+00 5.26418e-01 36 2020 6 4.16028e+00 1.14239e+00 80 2020 7 6.13809e+00 1.56305e-01 16 2020 8 3.31537e+00 3.30504e-01 34 2020 9 3.06155e+00 1.05979e+00 66 2020 10 3.31462e+00 9.24727e-01 112 2020 11 3.88460e+00 9.07720e-01 186 2020 12 3.78805e+00 1.09887e+00 243 2021 1 4.16710e+00 6.19437e-01 71 2021 2 nan nan 0 2021 3 4.74079e+00 7.18632e-01 73 2021 4 4.18878e+00 6.78557e-01 145 2021 5 4.73522e+00 1.40815e+00 92 2021 6 4.17533e+00 1.37829e+00 32 2021 7 4.00440e+00 5.92917e-01 64 2021 8 3.42921e+00 1.14047e+00 90 2021 9 3.77645e+00 6.54755e-01 83 2021 10 4.39074e+00 8.41326e-01 107 2021 11 2.87675e+00 5.78357e-01 210 2021 12 3.26489e+00 4.67016e-01 117 2022 1 4.19454e+00 8.49170e-01 66 2022 2 4.85868e+00 9.49837e-01 76 2022 3 4.79744e+00 1.41563e+00 144 2022 4 5.63270e+00 1.62379e+00 32 2022 5 4.18093e+00 1.34236e+00 44 2022 6 2.96323e+00 5.59880e-01 119 2022 7 3.09882e+00 4.94357e-01 112 2022 8 2.70160e+00 3.39781e-01 74 2022 9 2.80031e+00 9.92914e-01 100 2022 10 3.51296e+00 6.21943e-01 302 2022 11 3.98512e+00 1.19281e+00 147 2022 12 3.89500e+00 9.80907e-01 179 2023 1 3.42877e+00 5.36353e-01 143 2023 2 5.00728e+00 1.31235e+00 81 2023 3 3.90245e+00 5.33641e-01 112 2023 4 4.84933e+00 7.11901e-01 64 2023 5 3.37807e+00 1.13040e+00 48 2023 6 5.91094e+00 8.54324e-01 55 2023 7 3.68512e+00 3.16559e-01 32 2023 8 3.60999e+00 1.49291e-01 57 2023 9 3.36586e+00 8.97905e-01 128 2023 10 3.96091e+00 1.11602e+00 195 2023 11 3.33936e+00 8.52734e-01 120 2023 12 2.74493e+00 1.78108e-01 58 2024 1 3.80526e+00 1.39972e+00 62 2024 2 3.75420e+00 1.61174e+00 43 2024 3 5.65347e+00 1.20412e+00 36 2024 4 nan nan 0