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 6.25741e+01 2.38403e-01 19 2002 8 5.70712e+01 5.04813e-01 36 2002 9 5.05598e+01 3.37509e+00 34 2002 10 4.28830e+01 2.11509e+00 67 2002 11 3.35424e+01 2.30571e+00 134 2002 12 2.89397e+01 3.91782e-01 115 2003 1 3.15721e+01 1.64225e+00 181 2003 2 3.81930e+01 2.17793e+00 102 2003 3 4.85579e+01 1.90801e+00 33 2003 4 5.62637e+01 2.14096e+00 145 2003 5 6.15760e+01 1.09063e+00 46 2003 6 6.30598e+01 2.50189e-02 32 2003 7 6.15691e+01 4.68477e-01 32 2003 8 5.65740e+01 0.00000e+00 2 2003 9 5.06338e+01 2.31205e+00 84 2003 10 4.15164e+01 2.55067e+00 128 2003 11 3.27744e+01 1.75357e+00 161 2003 12 2.89639e+01 4.75383e-01 115 2004 1 3.14941e+01 1.70942e+00 96 2004 2 4.18842e+01 1.85720e+00 32 2004 3 4.87887e+01 1.28120e+00 64 2004 4 5.67107e+01 2.07898e+00 76 2004 5 6.14092e+01 7.51385e-01 58 2004 6 nan nan 0 2004 7 6.25500e+01 4.72602e-02 32 2004 8 5.78809e+01 1.61840e+00 68 2004 9 5.04037e+01 1.49457e-02 7 2004 10 4.11281e+01 2.19293e+00 80 2004 11 3.36061e+01 1.93614e+00 78 2004 12 2.86842e+01 9.56442e-02 65 2005 1 3.19947e+01 1.53516e+00 120 2005 2 3.82415e+01 1.42682e+00 80 2005 3 4.80828e+01 2.97348e+00 125 2005 4 5.60378e+01 1.07562e+00 58 2005 5 6.19222e+01 6.66673e-01 78 2005 6 6.32592e+01 1.03537e-01 48 2005 7 6.15803e+01 7.10388e-01 15 2005 8 5.85385e+01 1.63658e-01 20 2005 9 5.00850e+01 2.50145e+00 55 2005 10 4.17941e+01 2.03314e+00 100 2005 11 3.30879e+01 1.96943e+00 84 2005 12 2.86809e+01 1.13457e-01 87 2006 1 3.14893e+01 1.98894e+00 99 2006 2 3.80852e+01 2.29996e+00 109 2006 3 4.81071e+01 2.85453e+00 129 2006 4 5.56337e+01 1.42049e+00 74 2006 5 6.14999e+01 1.00789e+00 71 2006 6 6.30460e+01 4.34999e-01 54 2006 7 6.20880e+01 4.45361e-02 16 2006 8 5.82647e+01 2.29961e+00 48 2006 9 4.90402e+01 2.15195e+00 84 2006 10 4.12060e+01 2.78005e+00 127 2006 11 3.33415e+01 1.93685e+00 143 2006 12 2.91025e+01 5.84134e-01 96 2007 1 3.16048e+01 1.62504e+00 82 2007 2 3.93749e+01 2.30585e+00 109 2007 3 4.77166e+01 3.01124e+00 121 2007 4 5.69581e+01 1.96274e+00 104 2007 5 6.03745e+01 6.42712e-01 41 2007 6 6.31172e+01 9.93093e-02 18 2007 7 6.14834e+01 4.98412e-01 32 2007 8 5.73343e+01 1.51083e+00 72 2007 9 4.86833e+01 1.22921e+00 54 2007 10 4.22790e+01 2.08890e+00 82 2007 11 3.35422e+01 2.05590e+00 176 2007 12 2.89438e+01 6.71302e-02 46 2008 1 3.16918e+01 1.96435e+00 108 2008 2 3.86989e+01 3.02820e+00 170 2008 3 4.92998e+01 2.83753e+00 116 2008 4 5.71236e+01 1.24391e+00 76 2008 5 6.18385e+01 7.28683e-01 48 2008 6 6.31673e+01 2.46604e-01 30 2008 7 nan nan 0 2008 8 nan nan 0 2008 9 5.03159e+01 1.84900e+00 75 2008 10 4.12006e+01 2.99575e+00 149 2008 11 3.35076e+01 2.00734e+00 175 2008 12 2.89765e+01 4.58514e-01 130 2009 1 3.11224e+01 1.84584e+00 116 2009 2 3.91528e+01 2.62576e+00 135 2009 3 4.74800e+01 2.21378e+00 77 2009 4 5.79674e+01 4.61859e-01 35 2009 5 6.16237e+01 6.86443e-01 28 2009 6 6.32633e+01 4.16842e-02 38 2009 7 6.26780e+01 0.00000e+00 1 2009 8 5.87341e+01 1.41853e+00 47 2009 9 5.05013e+01 2.39648e+00 46 2009 10 4.12352e+01 2.74337e+00 108 2009 11 3.35693e+01 1.06783e+00 83 2009 12 2.87192e+01 1.67513e-01 42 2010 1 3.11902e+01 1.71572e+00 123 2010 2 3.95718e+01 2.32165e+00 101 2010 3 4.75083e+01 3.10388e+00 125 2010 4 5.64911e+01 1.86740e+00 116 2010 5 6.13739e+01 6.16774e-01 51 2010 6 6.30263e+01 1.70347e-01 65 2010 7 6.16575e+01 8.08656e-01 50 2010 8 5.85945e+01 2.93475e-02 16 2010 9 5.01261e+01 2.23722e+00 124 2010 10 4.19541e+01 2.62370e+00 192 2010 11 3.30592e+01 1.93759e+00 185 2010 12 2.91683e+01 5.15077e-01 169 2011 1 3.14238e+01 1.51480e+00 132 2011 2 4.02769e+01 1.91081e+00 153 2011 3 4.86617e+01 2.07181e+00 127 2011 4 5.50325e+01 1.48997e+00 83 2011 5 6.18179e+01 6.59992e-01 127 2011 6 6.31277e+01 1.47562e-01 39 2011 7 6.15084e+01 2.60417e-02 32 2011 8 5.79086e+01 1.40887e+00 75 2011 9 5.11499e+01 2.18002e+00 101 2011 10 4.17202e+01 2.90710e+00 163 2011 11 3.42517e+01 1.94951e+00 176 2011 12 2.92208e+01 5.83576e-01 143 2012 1 3.11751e+01 1.96946e+00 182 2012 2 4.31702e+01 1.24319e-01 16 2012 3 4.87311e+01 2.47736e+00 149 2012 4 5.64315e+01 2.07403e+00 78 2012 5 6.18319e+01 8.62174e-01 74 2012 6 6.32784e+01 1.04112e-01 23 2012 7 6.24523e+01 2.06663e-01 27 2012 8 5.78035e+01 4.59251e-01 16 2012 9 5.05336e+01 2.83205e+00 46 2012 10 4.08694e+01 2.37802e+00 99 2012 11 3.39299e+01 2.10358e+00 130 2012 12 2.91711e+01 5.24608e-01 75 2013 1 3.29899e+01 9.79952e-01 97 2013 2 3.80437e+01 1.67361e+00 59 2013 3 4.76852e+01 2.85439e+00 93 2013 4 5.56674e+01 1.02675e+00 51 2013 5 6.18306e+01 1.80488e-01 37 2013 6 6.31446e+01 1.66469e-01 48 2013 7 nan nan 0 2013 8 5.79568e+01 1.71840e+00 66 2013 9 5.18188e+01 2.38967e+00 63 2013 10 4.11867e+01 2.51561e+00 116 2013 11 3.32978e+01 2.42492e+00 90 2013 12 2.87935e+01 2.38422e-01 103 2014 1 3.12460e+01 7.95544e-01 70 2014 2 3.93879e+01 1.34515e+00 128 2014 3 4.86299e+01 3.27509e+00 65 2014 4 5.65738e+01 1.97025e+00 76 2014 5 6.10146e+01 6.80611e-01 53 2014 6 6.32903e+01 1.38319e-01 56 2014 7 6.23109e+01 9.51711e-01 48 2014 8 5.80137e+01 2.23963e+00 48 2014 9 5.10499e+01 2.56864e+00 53 2014 10 4.17199e+01 2.73377e+00 198 2014 11 3.37119e+01 2.41188e+00 166 2014 12 2.90036e+01 3.47201e-01 128 2015 1 3.20892e+01 1.90130e+00 137 2015 2 3.77835e+01 1.73431e+00 138 2015 3 4.86657e+01 2.76306e+00 81 2015 4 5.50577e+01 2.74375e+00 64 2015 5 6.17637e+01 7.24513e-01 86 2015 6 6.31490e+01 5.94152e-02 22 2015 7 6.24593e+01 1.92728e-02 16 2015 8 5.63583e+01 2.47268e-01 27 2015 9 5.00185e+01 1.35617e+00 52 2015 10 4.13159e+01 2.44866e+00 127 2015 11 3.30437e+01 2.06744e+00 162 2015 12 2.91510e+01 3.40558e-01 73 2016 1 3.12811e+01 1.61601e+00 124 2016 2 3.89988e+01 2.51987e+00 196 2016 3 4.73571e+01 1.93033e+00 94 2016 4 5.57447e+01 1.71451e+00 63 2016 5 6.17562e+01 6.76988e-01 81 2016 6 6.31482e+01 1.78847e-01 87 2016 7 6.22289e+01 6.63467e-01 72 2016 8 5.69618e+01 2.24231e-01 31 2016 9 4.76782e+01 1.30337e+00 46 2016 10 4.15120e+01 2.94704e+00 115 2016 11 3.39067e+01 1.77881e+00 147 2016 12 2.87943e+01 3.60053e-01 165 2017 1 3.14659e+01 1.85935e+00 116 2017 2 3.97852e+01 2.42088e+00 144 2017 3 4.89520e+01 2.39508e+00 108 2017 4 5.60238e+01 1.85369e+00 96 2017 5 6.17499e+01 9.06547e-01 70 2017 6 6.30463e+01 2.03409e-01 33 2017 7 6.24532e+01 8.45996e-01 20 2017 8 5.73821e+01 6.47702e-01 30 2017 9 5.05814e+01 2.27316e+00 48 2017 10 4.00065e+01 2.03904e+00 88 2017 11 3.33794e+01 2.14599e+00 199 2017 12 2.89311e+01 1.58856e-01 64 2018 1 3.12392e+01 1.79175e+00 139 2018 2 3.94123e+01 2.32195e+00 94 2018 3 4.76805e+01 2.18872e+00 137 2018 4 5.69562e+01 1.82480e+00 124 2018 5 6.17283e+01 9.91152e-01 55 2018 6 6.31868e+01 9.66581e-02 50 2018 7 6.18490e+01 6.30926e-01 35 2018 8 nan nan 0 2018 9 5.06339e+01 1.78424e+00 63 2018 10 4.15540e+01 2.92903e+00 156 2018 11 3.22326e+01 1.00591e+00 85 2018 12 2.89707e+01 4.26905e-01 112 2019 1 3.13140e+01 1.65818e+00 141 2019 2 3.96010e+01 2.08685e+00 48 2019 3 4.80569e+01 2.73514e+00 90 2019 4 5.78864e+01 5.43419e-01 69 2019 5 6.20819e+01 3.56680e-01 65 2019 6 6.31997e+01 1.38552e-01 48 2019 7 6.28626e+01 2.64167e-02 16 2019 8 5.88061e+01 2.09889e+00 45 2019 9 5.05890e+01 2.58522e+00 106 2019 10 4.27120e+01 2.64709e+00 107 2019 11 3.26327e+01 2.15097e+00 119 2019 12 2.88065e+01 2.50802e-02 13 2020 1 2.98918e+01 1.28567e+00 66 2020 2 3.89438e+01 3.08104e+00 117 2020 3 4.76705e+01 2.44569e+00 65 2020 4 5.67065e+01 1.98238e+00 101 2020 5 6.11971e+01 8.90401e-01 84 2020 6 6.32936e+01 3.32207e-02 16 2020 7 6.16202e+01 4.33539e-01 23 2020 8 5.97039e+01 3.61948e-01 38 2020 9 4.93519e+01 1.36295e+00 20 2020 10 4.16254e+01 1.74344e+00 78 2020 11 3.29628e+01 1.82002e+00 154 2020 12 2.89925e+01 4.03199e-01 166 2021 1 3.10592e+01 2.00989e+00 89 2021 2 4.01386e+01 2.87133e+00 89 2021 3 4.71689e+01 2.02745e+00 71 2021 4 5.62369e+01 2.07903e+00 116 2021 5 6.19167e+01 7.30267e-01 75 2021 6 nan nan 0 2021 7 6.15619e+01 3.22757e-01 42 2021 8 5.79502e+01 7.53231e-01 39 2021 9 5.06119e+01 2.60161e+00 36 2021 10 4.16088e+01 1.97335e+00 77 2021 11 3.30595e+01 1.76878e+00 183 2021 12 2.89967e+01 5.61659e-01 103 2022 1 3.13674e+01 1.92047e+00 175 2022 2 3.97847e+01 1.89880e+00 99 2022 3 4.79640e+01 2.82618e+00 156 2022 4 5.84447e+01 2.28644e-01 32 2022 5 6.08700e+01 1.09990e+00 48 2022 6 6.31525e+01 1.05364e-01 51 2022 7 6.20421e+01 5.21917e-01 52 2022 8 5.79063e+01 1.77566e+00 64 2022 9 4.85970e+01 1.28175e+00 70 2022 10 4.22327e+01 2.59761e+00 258 2022 11 3.48108e+01 1.56555e+00 81 2022 12 2.90313e+01 4.70588e-01 158 2023 1 3.11744e+01 1.53489e+00 214 2023 2 3.83943e+01 2.81310e+00 167 2023 3 4.83753e+01 1.73936e+00 125 2023 4 5.80465e+01 5.51181e-01 76 2023 5 6.07755e+01 1.19054e+00 44 2023 6 6.30642e+01 1.31994e-01 20 2023 7 6.19277e+01 9.19480e-01 48 2023 8 5.71666e+01 1.94174e+00 49 2023 9 5.20545e+01 1.55512e+00 138 2023 10 3.99299e+01 2.18671e+00 192 2023 11 3.38178e+01 1.98104e+00 140 2023 12 2.85877e+01 2.30890e-01 75 2024 1 3.07020e+01 1.94342e+00 122 2024 2 4.02934e+01 2.14580e+00 159 2024 3 5.00329e+01 2.96691e+00 125 2024 4 nan nan 0