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 6.19927e+01 6.59488e-01 64 2002 8 5.77088e+01 1.21626e+00 121 2002 9 5.03144e+01 2.34140e+00 144 2002 10 4.37114e+01 2.70861e+00 240 2002 11 3.41579e+01 2.14553e+00 237 2002 12 2.99699e+01 4.70238e-01 199 2003 1 3.19277e+01 1.45920e+00 256 2003 2 4.00437e+01 2.30568e+00 185 2003 3 5.13236e+01 1.80933e+00 112 2003 4 5.72094e+01 1.99284e+00 144 2003 5 6.16754e+01 8.04174e-01 78 2003 6 6.32010e+01 1.45102e-01 112 2003 7 6.19779e+01 7.49793e-01 64 2003 8 5.66299e+01 9.79251e-01 96 2003 9 5.19627e+01 2.13256e+00 166 2003 10 4.19070e+01 2.60903e+00 224 2003 11 3.39865e+01 1.87265e+00 272 2003 12 2.99805e+01 4.66367e-01 224 2004 1 3.23074e+01 1.45195e+00 240 2004 2 4.25160e+01 1.41766e+00 64 2004 3 5.07725e+01 1.90930e+00 256 2004 4 5.80283e+01 1.96204e+00 162 2004 5 6.17654e+01 8.70045e-01 209 2004 6 6.31929e+01 1.08117e-01 100 2004 7 6.21141e+01 6.85753e-01 77 2004 8 5.70520e+01 1.46092e+00 144 2004 9 5.16357e+01 1.96799e+00 88 2004 10 4.13633e+01 1.72642e+00 81 2004 11 3.40509e+01 2.03388e+00 116 2004 12 2.97619e+01 3.41178e-01 191 2005 1 3.21655e+01 1.47202e+00 168 2005 2 3.88983e+01 1.66472e+00 128 2005 3 4.88594e+01 3.13994e+00 168 2005 4 5.71743e+01 1.55493e+00 175 2005 5 6.18839e+01 7.43833e-01 184 2005 6 6.32763e+01 1.96030e-01 112 2005 7 6.18365e+01 5.91516e-01 140 2005 8 5.72002e+01 1.55836e+00 44 2005 9 5.06639e+01 2.27153e+00 80 2005 10 4.21403e+01 2.64094e+00 274 2005 11 3.47306e+01 2.00477e+00 287 2005 12 2.99164e+01 4.64362e-01 256 2006 1 3.24334e+01 1.72961e+00 203 2006 2 3.95127e+01 2.03850e+00 179 2006 3 4.90044e+01 2.89654e+00 257 2006 4 5.71597e+01 1.98235e+00 208 2006 5 6.19753e+01 7.86425e-01 236 2006 6 6.32185e+01 1.77066e-01 144 2006 7 6.19745e+01 6.29717e-01 159 2006 8 5.89196e+01 6.48064e-01 84 2006 9 5.02395e+01 2.10276e+00 174 2006 10 4.30905e+01 3.25666e+00 234 2006 11 3.44747e+01 1.98339e+00 240 2006 12 2.98811e+01 3.92916e-01 144 2007 1 3.25882e+01 1.69503e+00 131 2007 2 4.07630e+01 2.64810e+00 206 2007 3 4.97053e+01 2.57466e+00 310 2007 4 5.76503e+01 1.96682e+00 215 2007 5 6.19511e+01 7.82322e-01 128 2007 6 6.32269e+01 1.96179e-01 137 2007 7 6.16779e+01 6.76447e-01 125 2007 8 5.74413e+01 1.51950e+00 128 2007 9 5.04088e+01 2.66069e+00 159 2007 10 4.47124e+01 1.46515e+00 116 2007 11 3.47292e+01 2.04978e+00 256 2007 12 3.00052e+01 4.24723e-01 173 2008 1 3.23291e+01 1.95087e+00 259 2008 2 3.96422e+01 2.87104e+00 257 2008 3 5.01422e+01 2.86505e+00 208 2008 4 5.80191e+01 1.86489e+00 179 2008 5 6.19714e+01 8.69459e-01 160 2008 6 6.32892e+01 1.93969e-01 128 2008 7 6.21848e+01 4.06403e-01 106 2008 8 5.85551e+01 1.85197e+00 48 2008 9 5.08295e+01 2.54470e+00 192 2008 10 4.21417e+01 2.82647e+00 272 2008 11 3.39596e+01 1.83415e+00 248 2008 12 2.99744e+01 5.41009e-01 240 2009 1 3.29381e+01 1.81518e+00 192 2009 2 4.03648e+01 2.64049e+00 244 2009 3 4.88075e+01 2.41061e+00 272 2009 4 5.82731e+01 1.86410e+00 192 2009 5 6.17181e+01 9.95755e-01 128 2009 6 6.33471e+01 1.58606e-01 112 2009 7 6.19160e+01 1.03081e+00 48 2009 8 5.81867e+01 1.28375e+00 148 2009 9 5.17288e+01 2.06000e+00 173 2009 10 4.25858e+01 2.76539e+00 209 2009 11 3.42366e+01 1.83702e+00 160 2009 12 2.97062e+01 8.91778e-02 77 2010 1 3.20451e+01 1.74578e+00 225 2010 2 4.04467e+01 2.19657e+00 206 2010 3 4.90267e+01 3.00698e+00 256 2010 4 5.67079e+01 1.65884e+00 225 2010 5 6.20340e+01 7.00693e-01 179 2010 6 6.31729e+01 1.40387e-01 177 2010 7 6.12911e+01 8.25435e-01 72 2010 8 5.87136e+01 1.63949e+00 108 2010 9 5.14567e+01 1.74385e+00 192 2010 10 4.29086e+01 2.87837e+00 342 2010 11 3.40139e+01 1.87598e+00 288 2010 12 3.00877e+01 4.59707e-01 272 2011 1 3.25675e+01 1.70894e+00 176 2011 2 4.10881e+01 1.59404e+00 176 2011 3 4.91522e+01 2.30975e+00 240 2011 4 5.73522e+01 1.75778e+00 256 2011 5 6.17936e+01 8.56598e-01 240 2011 6 6.33373e+01 1.80681e-01 144 2011 7 6.14983e+01 9.31447e-01 86 2011 8 5.80214e+01 1.22727e+00 179 2011 9 5.05630e+01 2.12452e+00 192 2011 10 4.26945e+01 3.03462e+00 272 2011 11 3.42919e+01 2.15592e+00 300 2011 12 2.99988e+01 5.11238e-01 240 2012 1 3.23150e+01 1.82412e+00 192 2012 2 4.01344e+01 2.11728e+00 112 2012 3 4.95769e+01 2.64577e+00 240 2012 4 5.80425e+01 1.90380e+00 253 2012 5 6.15555e+01 9.02778e-01 144 2012 6 6.33896e+01 1.41235e-01 128 2012 7 6.22004e+01 3.48559e-01 100 2012 8 5.82113e+01 1.41711e+00 130 2012 9 5.06990e+01 2.26469e+00 159 2012 10 4.16038e+01 2.10205e+00 192 2012 11 3.40983e+01 2.07116e+00 279 2012 12 3.00524e+01 3.32802e-01 148 2013 1 3.38489e+01 1.24693e+00 112 2013 2 4.05129e+01 2.86485e+00 176 2013 3 4.99919e+01 2.73111e+00 203 2013 4 5.75012e+01 2.01255e+00 96 2013 5 6.19360e+01 7.13987e-01 136 2013 6 6.31976e+01 1.72641e-01 142 2013 7 6.20442e+01 1.62394e-01 28 2013 8 5.74930e+01 1.30112e+00 158 2013 9 5.19324e+01 2.40108e+00 160 2013 10 4.21259e+01 2.65763e+00 193 2013 11 3.43899e+01 2.17904e+00 112 2013 12 2.98018e+01 3.07078e-01 160 2014 1 3.25558e+01 1.18490e+00 168 2014 2 4.08022e+01 2.18323e+00 176 2014 3 4.92437e+01 2.69316e+00 192 2014 4 5.69456e+01 1.85930e+00 160 2014 5 6.15832e+01 7.72434e-01 163 2014 6 6.31789e+01 1.11902e-01 158 2014 7 6.19895e+01 7.65521e-01 85 2014 8 5.81941e+01 1.66817e+00 124 2014 9 5.20929e+01 1.94179e+00 124 2014 10 4.21244e+01 2.68635e+00 352 2014 11 3.42434e+01 2.28379e+00 272 2014 12 2.99937e+01 3.08271e-01 240 2015 1 3.26924e+01 1.63874e+00 197 2015 2 3.94316e+01 1.93622e+00 208 2015 3 5.12732e+01 1.64982e+00 80 2015 4 5.61808e+01 2.48752e+00 69 2015 5 6.16757e+01 7.73307e-01 252 2015 6 6.32230e+01 1.59140e-01 144 2015 7 6.18981e+01 8.08171e-01 96 2015 8 5.79285e+01 1.36540e+00 141 2015 9 5.22368e+01 2.03814e+00 96 2015 10 4.20012e+01 2.10430e+00 208 2015 11 3.40288e+01 2.13404e+00 224 2015 12 3.00169e+01 3.02853e-01 112 2016 1 3.26425e+01 1.35335e+00 160 2016 2 4.06880e+01 2.41201e+00 288 2016 3 4.92517e+01 2.96618e+00 160 2016 4 5.75507e+01 1.82446e+00 163 2016 5 6.18547e+01 8.43971e-01 205 2016 6 6.31959e+01 1.72544e-01 144 2016 7 6.17476e+01 6.80492e-01 188 2016 8 5.72255e+01 1.16080e+00 192 2016 9 5.07401e+01 2.29900e+00 238 2016 10 4.21822e+01 2.75765e+00 272 2016 11 3.38474e+01 1.89703e+00 225 2016 12 2.98934e+01 4.38532e-01 224 2017 1 3.20149e+01 1.79627e+00 160 2017 2 4.04508e+01 2.60605e+00 256 2017 3 4.97238e+01 2.52506e+00 282 2017 4 5.70956e+01 1.69558e+00 207 2017 5 6.18212e+01 7.38982e-01 176 2017 6 6.31993e+01 1.03959e-01 92 2017 7 6.19777e+01 9.01366e-01 88 2017 8 5.77782e+01 1.43326e+00 160 2017 9 5.03456e+01 1.95781e+00 176 2017 10 4.19299e+01 2.71450e+00 288 2017 11 3.41015e+01 2.08506e+00 300 2017 12 2.99766e+01 3.39978e-01 160 2018 1 3.25609e+01 1.75131e+00 208 2018 2 4.21873e+01 2.07773e+00 128 2018 3 4.94503e+01 2.81941e+00 240 2018 4 5.80161e+01 1.90812e+00 176 2018 5 6.14961e+01 8.43964e-01 144 2018 6 6.31419e+01 9.12041e-02 154 2018 7 6.20647e+01 8.11457e-01 122 2018 8 5.83936e+01 1.54878e+00 112 2018 9 5.17919e+01 1.52650e+00 164 2018 10 4.30313e+01 2.93773e+00 305 2018 11 3.41634e+01 2.02366e+00 112 2018 12 2.98372e+01 3.50549e-01 144 2019 1 3.28554e+01 1.60967e+00 176 2019 2 4.07697e+01 2.34195e+00 104 2019 3 5.01839e+01 2.62759e+00 207 2019 4 5.79743e+01 1.71247e+00 127 2019 5 6.18549e+01 8.56993e-01 240 2019 6 6.32527e+01 1.04216e-01 92 2019 7 6.17105e+01 8.82726e-01 112 2019 8 5.76888e+01 1.43929e+00 162 2019 9 5.14416e+01 2.44282e+00 288 2019 10 4.33279e+01 3.12932e+00 208 2019 11 3.41157e+01 2.14499e+00 143 2019 12 3.00590e+01 5.57318e-01 133 2020 1 3.19624e+01 1.68510e+00 149 2020 2 4.02855e+01 3.23973e+00 168 2020 3 4.95463e+01 2.35023e+00 240 2020 4 5.74206e+01 2.37732e+00 152 2020 5 6.15496e+01 8.02318e-01 190 2020 6 6.32969e+01 1.43948e-01 178 2020 7 6.19133e+01 4.29166e-01 96 2020 8 5.97145e+01 4.93490e-01 78 2020 9 5.12866e+01 2.56077e+00 144 2020 10 4.25996e+01 2.42602e+00 176 2020 11 3.42196e+01 1.97939e+00 235 2020 12 2.98243e+01 2.63468e-01 192 2021 1 3.26354e+01 1.87304e+00 112 2021 2 4.12377e+01 2.96278e+00 112 2021 3 4.82743e+01 1.57372e+00 176 2021 4 5.71201e+01 1.95686e+00 226 2021 5 6.21551e+01 6.86413e-01 192 2021 6 6.31179e+01 6.17486e-02 64 2021 7 6.15960e+01 3.67020e-01 96 2021 8 5.81627e+01 1.07164e+00 123 2021 9 5.03667e+01 2.43994e+00 128 2021 10 4.22772e+01 1.74356e+00 208 2021 11 3.37883e+01 1.80088e+00 240 2021 12 2.97981e+01 4.58096e-01 192 2022 1 3.22449e+01 1.87268e+00 263 2022 2 4.03435e+01 2.43072e+00 182 2022 3 4.97342e+01 2.99468e+00 208 2022 4 5.87843e+01 4.78414e-01 96 2022 5 6.16248e+01 8.23761e-01 141 2022 6 6.31336e+01 1.78960e-01 160 2022 7 6.17622e+01 8.44231e-01 127 2022 8 5.84287e+01 1.62168e+00 143 2022 9 5.08192e+01 2.00392e+00 160 2022 10 4.25990e+01 2.51462e+00 288 2022 11 3.50957e+01 1.89380e+00 128 2022 12 2.99337e+01 4.71450e-01 250 2023 1 3.21468e+01 1.55539e+00 224 2023 2 4.04883e+01 2.47072e+00 162 2023 3 4.89216e+01 2.10130e+00 158 2023 4 5.82841e+01 1.55674e+00 96 2023 5 6.14596e+01 6.67464e-01 170 2023 6 6.31698e+01 1.14672e-01 112 2023 7 6.22641e+01 1.01791e+00 141 2023 8 5.77040e+01 1.56583e+00 218 2023 9 5.15287e+01 1.58784e+00 148 2023 10 4.08422e+01 2.26949e+00 208 2023 11 3.51815e+01 1.97573e+00 208 2023 12 2.98012e+01 4.03059e-01 66 2024 1 3.21528e+01 1.88468e+00 135 2024 2 4.08603e+01 2.40917e+00 167 2024 3 5.06311e+01 3.09934e+00 92 2024 4 nan nan 0