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 6.22716e+01 3.60587e-01 112 2002 8 5.71937e+01 1.42311e+00 111 2002 9 5.03838e+01 2.27066e+00 80 2002 10 4.27682e+01 2.74250e+00 144 2002 11 3.27369e+01 1.63798e+00 160 2002 12 2.95289e+01 5.89976e-01 160 2003 1 3.12590e+01 1.50836e+00 255 2003 2 3.73950e+01 1.63178e+00 113 2003 3 5.11264e+01 1.57264e+00 99 2003 4 5.73379e+01 2.03369e+00 125 2003 5 6.24086e+01 8.32462e-01 64 2003 6 6.29105e+01 1.32354e-01 64 2003 7 6.20248e+01 8.10862e-01 112 2003 8 5.72394e+01 8.68202e-01 74 2003 9 5.17529e+01 2.13867e+00 145 2003 10 4.16909e+01 2.52625e+00 192 2003 11 3.36977e+01 2.09891e+00 227 2003 12 2.93199e+01 4.50604e-01 192 2004 1 3.20711e+01 1.58222e+00 133 2004 2 4.08055e+01 2.33067e+00 80 2004 3 4.93766e+01 2.74329e+00 261 2004 4 5.71913e+01 2.23426e+00 144 2004 5 6.20354e+01 9.26835e-01 188 2004 6 6.27880e+01 1.11991e-01 62 2004 7 6.25801e+01 1.58374e-01 48 2004 8 5.80490e+01 1.69024e+00 96 2004 9 5.04307e+01 2.41074e+00 189 2004 10 4.32354e+01 2.44440e+00 96 2004 11 3.45084e+01 1.72355e+00 112 2004 12 2.91112e+01 3.08054e-01 116 2005 1 3.17876e+01 1.47079e+00 160 2005 2 3.90985e+01 1.70863e+00 128 2005 3 4.79051e+01 2.52756e+00 168 2005 4 5.73539e+01 1.46258e+00 128 2005 5 6.18448e+01 8.11615e-01 120 2005 6 6.29704e+01 1.70052e-01 112 2005 7 6.17075e+01 6.51592e-01 144 2005 8 5.80791e+01 6.08205e-01 48 2005 9 5.15867e+01 2.45647e+00 192 2005 10 4.16423e+01 2.44041e+00 268 2005 11 3.35319e+01 1.91792e+00 246 2005 12 2.93209e+01 5.49892e-01 128 2006 1 3.19209e+01 1.89077e+00 144 2006 2 3.98266e+01 2.80263e+00 174 2006 3 4.92863e+01 2.85013e+00 194 2006 4 5.71541e+01 1.64662e+00 176 2006 5 6.22908e+01 7.35767e-01 160 2006 6 6.28321e+01 2.21629e-01 176 2006 7 6.22468e+01 4.58959e-01 56 2006 8 5.76787e+01 1.49731e+00 146 2006 9 5.09844e+01 2.76259e+00 158 2006 10 4.25623e+01 2.76718e+00 254 2006 11 3.39618e+01 1.95428e+00 224 2006 12 2.95755e+01 5.66707e-01 164 2007 1 3.22153e+01 1.55110e+00 92 2007 2 3.95756e+01 2.10860e+00 112 2007 3 4.91987e+01 2.47648e+00 256 2007 4 5.82388e+01 1.65131e+00 144 2007 5 6.12963e+01 6.70077e-01 96 2007 6 6.29456e+01 2.40872e-01 127 2007 7 6.22019e+01 5.77478e-01 112 2007 8 5.76093e+01 1.63327e+00 49 2007 9 4.94352e+01 2.02895e+00 113 2007 10 4.30348e+01 2.78159e+00 208 2007 11 3.42992e+01 1.85587e+00 240 2007 12 2.93806e+01 3.19252e-01 106 2008 1 3.12316e+01 1.96021e+00 128 2008 2 3.93982e+01 2.95838e+00 228 2008 3 4.93217e+01 2.79776e+00 145 2008 4 5.87365e+01 1.20720e+00 128 2008 5 6.20886e+01 9.62690e-01 99 2008 6 6.29728e+01 2.43224e-01 127 2008 7 6.19966e+01 6.81555e-01 76 2008 8 5.59619e+01 9.40225e-01 96 2008 9 5.07140e+01 2.48224e+00 190 2008 10 4.03678e+01 2.59484e+00 184 2008 11 3.35747e+01 2.00639e+00 256 2008 12 2.92583e+01 4.36559e-01 126 2009 1 3.19926e+01 1.87065e+00 208 2009 2 3.91652e+01 2.82930e+00 146 2009 3 4.78669e+01 2.26411e+00 149 2009 4 5.78650e+01 1.90344e+00 128 2009 5 6.18721e+01 9.36139e-01 128 2009 6 6.28925e+01 1.59482e-01 160 2009 7 6.20889e+01 2.39540e-01 80 2009 8 5.72193e+01 1.32047e+00 112 2009 9 5.01151e+01 2.49552e+00 162 2009 10 4.28851e+01 2.45414e+00 161 2009 11 3.44554e+01 1.84566e+00 160 2009 12 2.91064e+01 1.01673e-01 64 2010 1 3.09338e+01 1.43139e+00 145 2010 2 4.00256e+01 2.12084e+00 113 2010 3 4.90572e+01 2.83567e+00 160 2010 4 5.74600e+01 1.87138e+00 178 2010 5 6.23524e+01 8.01236e-01 137 2010 6 6.28161e+01 1.38645e-01 176 2010 7 6.18761e+01 8.57771e-01 119 2010 8 5.76109e+01 1.23075e+00 48 2010 9 5.17319e+01 2.42503e+00 220 2010 10 4.28446e+01 2.42675e+00 332 2010 11 3.41974e+01 1.76087e+00 193 2010 12 2.95841e+01 5.32099e-01 208 2011 1 3.16973e+01 1.72458e+00 157 2011 2 4.07483e+01 1.69013e+00 192 2011 3 4.96610e+01 1.97683e+00 192 2011 4 5.74821e+01 1.95684e+00 128 2011 5 6.18513e+01 8.06688e-01 192 2011 6 6.29305e+01 2.47758e-01 130 2011 7 6.18869e+01 8.19706e-01 119 2011 8 5.75251e+01 1.44494e+00 184 2011 9 5.08953e+01 2.50661e+00 195 2011 10 4.25037e+01 2.85585e+00 293 2011 11 3.32587e+01 2.00159e+00 113 2011 12 2.95145e+01 5.89971e-01 157 2012 1 3.12025e+01 1.66170e+00 192 2012 2 3.85971e+01 2.54325e-01 39 2012 3 4.91292e+01 2.92727e+00 176 2012 4 5.81234e+01 1.57349e+00 176 2012 5 6.19268e+01 8.62687e-01 144 2012 6 6.30677e+01 1.62198e-01 96 2012 7 6.15594e+01 3.24982e-01 64 2012 8 5.78768e+01 1.13469e+00 65 2012 9 5.14318e+01 2.11224e+00 151 2012 10 4.14921e+01 2.40189e+00 254 2012 11 3.42542e+01 1.92640e+00 251 2012 12 2.93650e+01 4.49049e-01 96 2013 1 3.29918e+01 1.52942e+00 96 2013 2 3.88124e+01 3.03061e+00 96 2013 3 5.01391e+01 2.88340e+00 186 2013 4 5.74937e+01 1.54199e+00 96 2013 5 6.20651e+01 8.26300e-01 160 2013 6 6.30329e+01 1.80291e-01 92 2013 7 6.19707e+01 4.75569e-01 96 2013 8 5.75574e+01 1.75733e+00 130 2013 9 5.09139e+01 2.33751e+00 170 2013 10 4.20378e+01 2.36695e+00 164 2013 11 3.35868e+01 2.39629e+00 144 2013 12 2.92669e+01 4.59149e-01 112 2014 1 3.12792e+01 9.24577e-01 128 2014 2 3.99661e+01 2.00111e+00 160 2014 3 4.96107e+01 2.86884e+00 146 2014 4 5.63352e+01 1.66796e+00 103 2014 5 6.20149e+01 7.88366e-01 176 2014 6 6.28725e+01 1.45168e-01 188 2014 7 6.22338e+01 9.11870e-01 76 2014 8 5.72633e+01 1.46648e+00 160 2014 9 5.19099e+01 2.01329e+00 147 2014 10 4.12455e+01 2.48270e+00 304 2014 11 3.39153e+01 2.17836e+00 208 2014 12 2.94870e+01 4.54545e-01 176 2015 1 3.28211e+01 1.74377e+00 137 2015 2 3.79993e+01 1.47321e+00 164 2015 3 4.93026e+01 1.65879e+00 80 2015 4 5.41474e+01 3.12344e-01 37 2015 5 6.16735e+01 9.87677e-01 190 2015 6 6.27912e+01 1.73851e-01 176 2015 7 6.16706e+01 6.84100e-01 156 2015 8 5.72259e+01 1.86688e+00 144 2015 9 5.01302e+01 2.07546e+00 142 2015 10 4.20176e+01 2.20097e+00 208 2015 11 3.24407e+01 1.54847e+00 152 2015 12 2.95536e+01 3.73276e-01 112 2016 1 3.21137e+01 1.76895e+00 144 2016 2 3.92531e+01 2.48668e+00 253 2016 3 4.93234e+01 2.49228e+00 112 2016 4 5.68989e+01 1.88469e+00 144 2016 5 6.21044e+01 8.59217e-01 176 2016 6 6.29527e+01 1.25873e-01 150 2016 7 6.22327e+01 5.76318e-01 144 2016 8 5.70597e+01 1.40312e+00 128 2016 9 4.96651e+01 2.36356e+00 184 2016 10 4.14111e+01 2.73577e+00 272 2016 11 3.40472e+01 1.67109e+00 224 2016 12 2.94037e+01 5.01376e-01 176 2017 1 3.20864e+01 1.94156e+00 144 2017 2 4.00306e+01 2.53003e+00 208 2017 3 5.03415e+01 2.47446e+00 176 2017 4 5.63438e+01 1.34932e+00 148 2017 5 6.18390e+01 7.84933e-01 128 2017 6 6.29209e+01 9.93164e-02 57 2017 7 6.17065e+01 7.45141e-01 176 2017 8 5.71940e+01 1.33597e+00 80 2017 9 4.95696e+01 2.13487e+00 139 2017 10 4.13390e+01 2.57258e+00 219 2017 11 3.37915e+01 2.03320e+00 209 2017 12 2.92596e+01 1.77182e-01 112 2018 1 3.19808e+01 1.85158e+00 185 2018 2 4.01164e+01 2.48226e+00 80 2018 3 4.86149e+01 3.15481e+00 176 2018 4 5.78392e+01 1.56722e+00 203 2018 5 6.16751e+01 7.60366e-01 129 2018 6 6.27320e+01 1.05837e-01 80 2018 7 6.12058e+01 6.47085e-01 80 2018 8 5.80984e+01 1.62345e+00 160 2018 9 5.12927e+01 2.24409e+00 207 2018 10 4.25794e+01 2.97162e+00 270 2018 11 3.36975e+01 1.84596e+00 96 2018 12 2.95044e+01 4.97003e-01 96 2019 1 3.13959e+01 1.68914e+00 160 2019 2 4.03797e+01 2.46411e+00 64 2019 3 4.97527e+01 2.92376e+00 208 2019 4 5.86222e+01 1.06104e+00 128 2019 5 6.18622e+01 9.18929e-01 240 2019 6 6.30990e+01 3.68845e-01 96 2019 7 6.18160e+01 6.57756e-01 126 2019 8 5.85181e+01 1.73581e+00 86 2019 9 5.07551e+01 2.64077e+00 288 2019 10 4.38854e+01 2.31201e+00 143 2019 11 3.39196e+01 2.15626e+00 192 2019 12 2.93286e+01 4.41412e-01 112 2020 1 3.12586e+01 1.87424e+00 112 2020 2 3.95582e+01 3.36522e+00 140 2020 3 4.89908e+01 2.53285e+00 105 2020 4 5.71485e+01 2.11289e+00 176 2020 5 6.16124e+01 8.29848e-01 157 2020 6 6.30490e+01 1.49104e-01 95 2020 7 6.16951e+01 6.54501e-01 80 2020 8 5.92864e+01 5.83259e-01 77 2020 9 5.17983e+01 2.50323e+00 102 2020 10 4.16075e+01 2.34479e+00 227 2020 11 3.42756e+01 1.68079e+00 195 2020 12 2.94052e+01 4.54832e-01 224 2021 1 3.17378e+01 1.92551e+00 128 2021 2 3.96730e+01 3.05479e+00 82 2021 3 4.74107e+01 1.38669e+00 134 2021 4 5.65773e+01 2.19868e+00 176 2021 5 6.24851e+01 6.76400e-01 128 2021 6 6.28170e+01 1.26014e-01 87 2021 7 6.17449e+01 4.64763e-01 144 2021 8 5.82917e+01 1.24353e+00 167 2021 9 5.05709e+01 2.25938e+00 112 2021 10 4.14181e+01 2.65846e+00 144 2021 11 3.34861e+01 1.96839e+00 240 2021 12 2.94907e+01 5.76553e-01 114 2022 1 3.26656e+01 1.80488e+00 160 2022 2 3.99319e+01 2.41672e+00 196 2022 3 4.88252e+01 3.19363e+00 208 2022 4 5.88269e+01 7.58900e-01 48 2022 5 6.19113e+01 8.79177e-01 159 2022 6 6.28567e+01 1.59432e-01 176 2022 7 6.18329e+01 7.63573e-01 115 2022 8 5.77212e+01 1.96159e+00 157 2022 9 5.05895e+01 2.30726e+00 223 2022 10 4.24979e+01 2.68828e+00 272 2022 11 3.41790e+01 1.93669e+00 169 2022 12 2.93270e+01 5.14634e-01 158 2023 1 3.15569e+01 1.76795e+00 192 2023 2 3.90820e+01 2.41983e+00 154 2023 3 4.84466e+01 1.81019e+00 112 2023 4 5.79647e+01 1.42370e+00 96 2023 5 6.18922e+01 1.04519e+00 112 2023 6 6.29022e+01 2.81144e-01 73 2023 7 6.16497e+01 8.56907e-01 160 2023 8 5.77451e+01 1.21396e+00 160 2023 9 5.06901e+01 1.66839e+00 136 2023 10 4.07422e+01 2.63623e+00 176 2023 11 3.40462e+01 2.22036e+00 176 2023 12 2.90887e+01 3.78112e-01 112 2024 1 3.11492e+01 1.68171e+00 111 2024 2 4.07872e+01 2.43913e+00 128 2024 3 4.98645e+01 3.46463e+00 80 2024 4 5.46851e+01 3.99117e-01 28