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 6.19680e+01 6.07838e-01 96 2002 8 5.77710e+01 8.31853e-01 96 2002 9 4.94835e+01 2.64663e+00 96 2002 10 4.29259e+01 2.84488e+00 190 2002 11 3.35869e+01 2.15291e+00 208 2002 12 2.94789e+01 4.18107e-01 181 2003 1 3.12735e+01 1.47280e+00 240 2003 2 3.86516e+01 2.29387e+00 160 2003 3 5.07679e+01 2.18402e+00 87 2003 4 5.72588e+01 2.03078e+00 192 2003 5 6.19421e+01 9.49527e-01 70 2003 6 6.30615e+01 1.67961e-01 73 2003 7 6.18265e+01 8.57675e-01 112 2003 8 5.68744e+01 1.22110e+00 112 2003 9 5.20164e+01 1.90252e+00 112 2003 10 4.18704e+01 2.60045e+00 201 2003 11 3.37985e+01 2.03827e+00 256 2003 12 2.94801e+01 4.23490e-01 240 2004 1 3.19354e+01 1.58343e+00 134 2004 2 4.01192e+01 1.73620e+00 64 2004 3 4.96973e+01 2.39461e+00 240 2004 4 5.72357e+01 2.16913e+00 186 2004 5 6.17720e+01 8.81761e-01 194 2004 6 6.31494e+01 6.46649e-02 48 2004 7 6.24607e+01 1.25283e-01 64 2004 8 5.73384e+01 1.93237e+00 129 2004 9 5.05716e+01 2.34489e+00 96 2004 10 4.19794e+01 2.20952e+00 128 2004 11 3.33922e+01 1.97669e+00 161 2004 12 2.92026e+01 1.50422e-01 128 2005 1 3.18847e+01 1.75005e+00 176 2005 2 3.91964e+01 1.84454e+00 124 2005 3 4.79761e+01 2.40399e+00 172 2005 4 5.71463e+01 1.42708e+00 112 2005 5 6.16225e+01 7.71866e-01 205 2005 6 6.32007e+01 1.02609e-01 80 2005 7 6.15395e+01 5.29295e-01 84 2005 8 5.76807e+01 1.19989e+00 101 2005 9 5.06044e+01 2.46439e+00 176 2005 10 4.21258e+01 2.64174e+00 304 2005 11 3.37548e+01 2.05114e+00 228 2005 12 2.94806e+01 5.71903e-01 160 2006 1 3.19508e+01 1.82545e+00 176 2006 2 3.92444e+01 2.52568e+00 159 2006 3 4.95197e+01 2.93439e+00 224 2006 4 5.71820e+01 1.86058e+00 157 2006 5 6.18481e+01 7.81503e-01 176 2006 6 6.31460e+01 1.24870e-01 140 2006 7 6.18703e+01 7.55445e-01 112 2006 8 5.79506e+01 1.57591e+00 160 2006 9 5.14313e+01 2.72677e+00 155 2006 10 4.28863e+01 2.94377e+00 208 2006 11 3.34976e+01 2.14900e+00 264 2006 12 2.95845e+01 4.84468e-01 208 2007 1 3.17243e+01 1.63245e+00 112 2007 2 3.98472e+01 2.34161e+00 144 2007 3 4.93892e+01 2.62129e+00 255 2007 4 5.80795e+01 1.65251e+00 128 2007 5 6.13470e+01 7.09576e-01 119 2007 6 6.30768e+01 1.68977e-01 128 2007 7 6.20216e+01 5.83169e-01 80 2007 8 5.73473e+01 1.33577e+00 88 2007 9 4.98194e+01 2.07915e+00 144 2007 10 4.36762e+01 2.00388e+00 176 2007 11 3.44566e+01 1.78942e+00 230 2007 12 2.94208e+01 6.36736e-02 64 2008 1 3.13273e+01 2.02019e+00 144 2008 2 3.94866e+01 2.84860e+00 240 2008 3 4.99611e+01 2.81152e+00 176 2008 4 5.84550e+01 1.37467e+00 163 2008 5 6.18670e+01 8.46850e-01 106 2008 6 6.31326e+01 1.94888e-01 192 2008 7 6.22149e+01 3.65956e-01 49 2008 8 5.75292e+01 1.94707e+00 84 2008 9 5.07128e+01 2.39224e+00 137 2008 10 4.06921e+01 2.50890e+00 182 2008 11 3.38565e+01 1.80607e+00 271 2008 12 2.95682e+01 4.27140e-01 128 2009 1 3.21300e+01 1.50706e+00 174 2009 2 3.88938e+01 2.71075e+00 184 2009 3 4.81933e+01 2.53493e+00 176 2009 4 5.75762e+01 1.91174e+00 160 2009 5 6.13894e+01 8.67646e-01 112 2009 6 6.31051e+01 1.39840e-01 128 2009 7 6.18322e+01 6.50592e-01 112 2009 8 5.74750e+01 1.53283e+00 127 2009 9 4.96727e+01 2.18753e+00 160 2009 10 4.25527e+01 2.63947e+00 188 2009 11 3.40943e+01 1.93776e+00 206 2009 12 2.92334e+01 1.09947e-01 64 2010 1 3.09140e+01 1.46894e+00 147 2010 2 3.98397e+01 2.20651e+00 160 2010 3 4.82711e+01 3.19943e+00 164 2010 4 5.75593e+01 1.69112e+00 192 2010 5 6.18853e+01 8.27837e-01 127 2010 6 6.30146e+01 7.63215e-02 116 2010 7 6.18810e+01 9.33794e-01 33 2010 8 5.94010e+01 9.61692e-02 16 2010 9 5.15996e+01 2.37583e+00 208 2010 10 4.24491e+01 2.69231e+00 336 2010 11 3.40612e+01 1.65791e+00 144 2010 12 2.96628e+01 4.93290e-01 216 2011 1 3.15689e+01 1.63759e+00 176 2011 2 4.06597e+01 1.79014e+00 192 2011 3 4.91709e+01 2.29454e+00 192 2011 4 5.70404e+01 2.00780e+00 160 2011 5 6.17767e+01 7.78083e-01 160 2011 6 6.30944e+01 2.67356e-01 128 2011 7 6.19441e+01 8.53953e-01 112 2011 8 5.76024e+01 1.42415e+00 176 2011 9 5.09047e+01 2.53213e+00 168 2011 10 4.24598e+01 2.81829e+00 290 2011 11 3.37570e+01 2.16066e+00 220 2011 12 2.94553e+01 5.24375e-01 147 2012 1 3.14221e+01 1.89656e+00 208 2012 2 4.03498e+01 1.91942e+00 55 2012 3 4.97083e+01 2.31790e+00 208 2012 4 5.76250e+01 1.84701e+00 176 2012 5 6.16951e+01 8.20252e-01 144 2012 6 6.32170e+01 1.43102e-01 88 2012 7 6.19070e+01 7.39933e-01 107 2012 8 5.67556e+01 6.79701e-01 64 2012 9 5.12171e+01 2.51373e+00 156 2012 10 4.13925e+01 2.34163e+00 288 2012 11 3.39572e+01 2.07144e+00 315 2012 12 2.95757e+01 4.32159e-01 112 2013 1 3.34248e+01 1.07218e+00 112 2013 2 3.88766e+01 2.81020e+00 110 2013 3 4.89466e+01 3.05349e+00 224 2013 4 5.66668e+01 1.59415e+00 96 2013 5 6.17964e+01 8.41428e-01 160 2013 6 6.30630e+01 1.23878e-01 62 2013 7 6.19199e+01 5.74963e-01 80 2013 8 5.74700e+01 1.86100e+00 145 2013 9 5.08460e+01 2.34413e+00 192 2013 10 4.26081e+01 2.54626e+00 256 2013 11 3.33516e+01 2.13325e+00 159 2013 12 2.92480e+01 2.26756e-01 109 2014 1 3.13316e+01 1.11867e+00 128 2014 2 4.04739e+01 2.12423e+00 144 2014 3 4.98738e+01 2.97982e+00 172 2014 4 5.72961e+01 2.00646e+00 128 2014 5 6.16180e+01 7.66717e-01 144 2014 6 6.30690e+01 1.50426e-01 151 2014 7 6.19422e+01 9.36148e-01 122 2014 8 5.75072e+01 1.77269e+00 167 2014 9 5.11835e+01 1.89376e+00 160 2014 10 4.18711e+01 2.85577e+00 336 2014 11 3.36943e+01 2.35937e+00 208 2014 12 2.95749e+01 3.90815e-01 208 2015 1 3.25326e+01 1.87733e+00 167 2015 2 3.85051e+01 1.69772e+00 167 2015 3 4.92573e+01 2.65587e+00 158 2015 4 5.46823e+01 6.46493e-01 64 2015 5 6.15247e+01 9.38194e-01 176 2015 6 6.30335e+01 1.38685e-01 144 2015 7 6.20524e+01 6.38223e-01 112 2015 8 5.77020e+01 2.09851e+00 144 2015 9 5.01006e+01 1.97106e+00 130 2015 10 4.18541e+01 2.08208e+00 211 2015 11 3.29862e+01 2.25960e+00 176 2015 12 2.94872e+01 3.27445e-01 128 2016 1 3.13485e+01 1.49762e+00 176 2016 2 4.00491e+01 2.39648e+00 243 2016 3 4.89041e+01 2.58339e+00 164 2016 4 5.62993e+01 1.80722e+00 108 2016 5 6.18223e+01 8.13488e-01 137 2016 6 6.31261e+01 1.52260e-01 144 2016 7 6.21336e+01 7.75148e-01 142 2016 8 5.72227e+01 1.41351e+00 119 2016 9 4.96728e+01 2.24068e+00 177 2016 10 4.14917e+01 2.51953e+00 320 2016 11 3.37029e+01 1.87763e+00 256 2016 12 2.93740e+01 4.34052e-01 172 2017 1 3.18610e+01 1.76407e+00 160 2017 2 3.99670e+01 2.76127e+00 249 2017 3 5.02188e+01 2.58580e+00 208 2017 4 5.67016e+01 1.65512e+00 148 2017 5 6.16001e+01 7.32561e-01 132 2017 6 6.30346e+01 1.94973e-01 80 2017 7 6.17539e+01 7.86728e-01 128 2017 8 5.65586e+01 1.13429e+00 68 2017 9 4.89940e+01 1.63664e+00 160 2017 10 4.15093e+01 2.52854e+00 240 2017 11 3.38536e+01 2.08016e+00 257 2017 12 2.94013e+01 2.19932e-01 126 2018 1 3.16683e+01 1.61116e+00 192 2018 2 4.12270e+01 2.05581e+00 160 2018 3 4.94171e+01 3.01658e+00 265 2018 4 5.74272e+01 2.10983e+00 192 2018 5 6.13969e+01 9.09406e-01 84 2018 6 6.30241e+01 1.26616e-01 80 2018 7 6.17904e+01 5.98447e-01 80 2018 8 5.78525e+01 1.58207e+00 89 2018 9 5.03803e+01 1.92575e+00 211 2018 10 4.26695e+01 2.93921e+00 260 2018 11 3.38775e+01 1.89232e+00 128 2018 12 2.95680e+01 4.54523e-01 103 2019 1 3.14354e+01 1.80144e+00 213 2019 2 4.15367e+01 2.72093e+00 58 2019 3 5.02596e+01 2.78045e+00 161 2019 4 5.81989e+01 1.78590e+00 116 2019 5 6.16194e+01 8.92505e-01 224 2019 6 6.31513e+01 1.28218e-01 64 2019 7 6.19721e+01 6.76292e-01 105 2019 8 5.82983e+01 1.68192e+00 112 2019 9 5.06188e+01 2.68782e+00 273 2019 10 4.37701e+01 2.19106e+00 160 2019 11 3.43816e+01 2.10502e+00 180 2019 12 2.94896e+01 3.90668e-01 124 2020 1 3.14299e+01 1.89948e+00 96 2020 2 3.99957e+01 3.34719e+00 144 2020 3 4.92566e+01 2.13964e+00 192 2020 4 5.72907e+01 2.16698e+00 158 2020 5 6.13269e+01 7.54215e-01 128 2020 6 6.32914e+01 1.09622e-01 80 2020 7 6.13119e+01 5.52839e-01 48 2020 8 5.97223e+01 3.00236e-01 80 2020 9 5.13999e+01 2.38376e+00 124 2020 10 4.14376e+01 2.50403e+00 194 2020 11 3.33106e+01 1.72280e+00 208 2020 12 2.94481e+01 4.30418e-01 252 2021 1 3.16288e+01 1.91613e+00 128 2021 2 4.14991e+01 2.57366e+00 103 2021 3 4.69177e+01 1.33380e+00 121 2021 4 5.69427e+01 2.33340e+00 176 2021 5 6.22216e+01 6.99026e-01 123 2021 6 6.30307e+01 1.03797e-01 80 2021 7 6.17588e+01 4.53842e-01 140 2021 8 5.81786e+01 1.14892e+00 126 2021 9 5.06964e+01 2.59333e+00 148 2021 10 4.20956e+01 2.71074e+00 128 2021 11 3.37227e+01 1.93197e+00 240 2021 12 2.93712e+01 4.74375e-01 142 2022 1 3.18187e+01 1.98820e+00 176 2022 2 4.04182e+01 2.02292e+00 176 2022 3 4.95832e+01 3.14807e+00 208 2022 4 5.88267e+01 7.84775e-01 48 2022 5 6.15663e+01 1.08802e+00 128 2022 6 6.31427e+01 1.51888e-01 208 2022 7 6.18869e+01 6.44098e-01 128 2022 8 5.70361e+01 1.79223e+00 128 2022 9 4.97603e+01 2.18728e+00 154 2022 10 4.28398e+01 2.62713e+00 308 2022 11 3.48802e+01 2.06635e+00 148 2022 12 2.93932e+01 4.77268e-01 145 2023 1 3.14589e+01 1.69335e+00 209 2023 2 3.91519e+01 2.58288e+00 164 2023 3 4.92343e+01 1.81529e+00 112 2023 4 5.70998e+01 1.88662e+00 121 2023 5 6.15601e+01 8.42491e-01 96 2023 6 6.31198e+01 1.73940e-01 80 2023 7 6.23096e+01 8.21581e-01 96 2023 8 5.73458e+01 1.33034e+00 129 2023 9 5.08561e+01 1.62123e+00 112 2023 10 4.03235e+01 2.21274e+00 217 2023 11 3.45363e+01 2.00730e+00 183 2023 12 2.91266e+01 1.96930e-01 90 2024 1 3.16979e+01 1.87674e+00 112 2024 2 4.05192e+01 2.46271e+00 152 2024 3 5.05276e+01 2.94382e+00 82 2024 4 nan nan 0