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 6.18772e+01 6.47345e-01 79 2002 8 5.74298e+01 1.09493e+00 140 2002 9 5.04614e+01 2.44767e+00 160 2002 10 4.37754e+01 2.59872e+00 224 2002 11 3.37765e+01 1.83084e+00 215 2002 12 2.95705e+01 5.01868e-01 218 2003 1 3.21427e+01 1.65728e+00 288 2003 2 3.96107e+01 2.36613e+00 164 2003 3 5.01733e+01 2.67784e+00 52 2003 4 5.73748e+01 2.04008e+00 128 2003 5 6.19885e+01 1.07622e+00 76 2003 6 6.31310e+01 1.68292e-01 95 2003 7 6.15524e+01 4.83862e-02 32 2003 8 5.71434e+01 1.38594e+00 108 2003 9 5.23486e+01 1.85741e+00 160 2003 10 4.20669e+01 2.72175e+00 254 2003 11 3.36750e+01 1.87116e+00 304 2003 12 2.95581e+01 4.93712e-01 256 2004 1 3.22668e+01 1.58468e+00 167 2004 2 4.13549e+01 2.16509e+00 80 2004 3 4.94440e+01 2.11468e+00 203 2004 4 5.72679e+01 1.97511e+00 175 2004 5 6.15815e+01 9.69610e-01 171 2004 6 6.31688e+01 1.25234e-01 119 2004 7 6.20693e+01 4.35311e-01 69 2004 8 5.69679e+01 1.28515e+00 160 2004 9 5.04346e+01 2.44574e+00 121 2004 10 4.38132e+01 1.89886e+00 96 2004 11 3.35587e+01 2.06753e+00 186 2004 12 2.93465e+01 1.86752e-01 132 2005 1 3.24480e+01 1.58857e+00 224 2005 2 3.86785e+01 1.60414e+00 142 2005 3 4.89910e+01 3.13876e+00 192 2005 4 5.67443e+01 1.68799e+00 85 2005 5 6.16174e+01 6.99021e-01 204 2005 6 6.31641e+01 1.71740e-01 122 2005 7 6.11320e+01 3.26202e-01 52 2005 8 5.90909e+01 4.51003e-01 29 2005 9 4.99910e+01 2.60376e+00 112 2005 10 4.21282e+01 2.70065e+00 288 2005 11 3.44129e+01 1.92136e+00 320 2005 12 2.96164e+01 5.50236e-01 224 2006 1 3.19993e+01 1.74158e+00 204 2006 2 3.90894e+01 2.03236e+00 192 2006 3 4.86087e+01 2.79730e+00 256 2006 4 5.68032e+01 1.91146e+00 205 2006 5 6.18151e+01 7.33370e-01 188 2006 6 6.30945e+01 2.72740e-01 98 2006 7 6.18401e+01 4.90367e-01 114 2006 8 5.85474e+01 1.34954e+00 158 2006 9 5.01229e+01 2.03577e+00 176 2006 10 4.31930e+01 2.89461e+00 272 2006 11 3.41209e+01 2.01604e+00 256 2006 12 2.95971e+01 4.11538e-01 144 2007 1 3.21106e+01 1.74831e+00 160 2007 2 4.04343e+01 2.38781e+00 240 2007 3 4.90366e+01 2.44577e+00 288 2007 4 5.74894e+01 2.07131e+00 212 2007 5 6.17957e+01 8.77338e-01 128 2007 6 6.31488e+01 1.52787e-01 128 2007 7 6.15740e+01 7.07402e-01 143 2007 8 5.72714e+01 1.57669e+00 128 2007 9 5.01548e+01 2.43586e+00 154 2007 10 4.41769e+01 1.42358e+00 152 2007 11 3.44466e+01 2.08061e+00 304 2007 12 2.97051e+01 4.98115e-01 160 2008 1 3.19565e+01 1.90314e+00 240 2008 2 3.96947e+01 2.95845e+00 288 2008 3 4.97621e+01 3.04866e+00 208 2008 4 5.75991e+01 1.68169e+00 198 2008 5 6.19284e+01 9.37450e-01 208 2008 6 6.31702e+01 1.83919e-01 158 2008 7 6.19633e+01 4.86578e-01 82 2008 8 5.72050e+01 2.09144e+00 80 2008 9 5.06172e+01 2.22523e+00 214 2008 10 4.20124e+01 2.71123e+00 302 2008 11 3.40799e+01 1.84663e+00 272 2008 12 2.97125e+01 5.37021e-01 240 2009 1 3.27070e+01 1.79911e+00 154 2009 2 3.96619e+01 2.42744e+00 224 2009 3 4.83923e+01 2.44643e+00 249 2009 4 5.82802e+01 1.79498e+00 163 2009 5 6.15701e+01 9.97372e-01 142 2009 6 6.33214e+01 1.75686e-01 112 2009 7 6.22609e+01 7.58103e-01 96 2009 8 5.79393e+01 1.35440e+00 128 2009 9 5.07561e+01 2.13483e+00 236 2009 10 4.20160e+01 2.95895e+00 216 2009 11 3.36427e+01 1.88473e+00 208 2009 12 2.93687e+01 1.13526e-01 48 2010 1 3.19814e+01 1.74706e+00 208 2010 2 4.04547e+01 2.31832e+00 240 2010 3 4.91720e+01 3.00185e+00 231 2010 4 5.68042e+01 1.89261e+00 216 2010 5 6.18424e+01 8.47842e-01 176 2010 6 6.30856e+01 1.22614e-01 197 2010 7 6.12735e+01 7.56348e-01 80 2010 8 5.88934e+01 1.19907e+00 81 2010 9 5.11041e+01 2.00660e+00 208 2010 10 4.27786e+01 2.77263e+00 384 2010 11 3.38974e+01 1.92884e+00 317 2010 12 2.97624e+01 5.07377e-01 288 2011 1 3.26661e+01 1.92930e+00 176 2011 2 4.06940e+01 1.62798e+00 160 2011 3 4.91412e+01 2.39181e+00 208 2011 4 5.67373e+01 1.61860e+00 233 2011 5 6.18370e+01 8.09523e-01 222 2011 6 6.32818e+01 1.50114e-01 119 2011 7 6.13714e+01 1.12040e+00 99 2011 8 5.72297e+01 1.04624e+00 140 2011 9 5.14842e+01 2.43118e+00 214 2011 10 4.27821e+01 2.91746e+00 287 2011 11 3.41557e+01 2.15905e+00 288 2011 12 2.96339e+01 5.47804e-01 284 2012 1 3.21140e+01 1.83878e+00 261 2012 2 4.06427e+01 1.18988e+00 48 2012 3 4.98694e+01 2.37138e+00 256 2012 4 5.78539e+01 1.93232e+00 240 2012 5 6.16959e+01 9.26577e-01 147 2012 6 6.33196e+01 1.12830e-01 110 2012 7 6.20303e+01 3.23949e-01 130 2012 8 5.78573e+01 1.57485e+00 96 2012 9 5.06882e+01 2.45492e+00 155 2012 10 4.16612e+01 2.21860e+00 243 2012 11 3.40354e+01 2.21174e+00 280 2012 12 2.97513e+01 3.90082e-01 137 2013 1 3.36545e+01 1.07757e+00 144 2013 2 4.05633e+01 2.89268e+00 160 2013 3 4.96566e+01 2.91757e+00 240 2013 4 5.72752e+01 2.16027e+00 140 2013 5 6.19818e+01 7.49119e-01 152 2013 6 6.30760e+01 1.35074e-01 128 2013 7 6.04898e+01 2.19848e-01 32 2013 8 5.73363e+01 1.32536e+00 82 2013 9 5.15073e+01 2.14446e+00 208 2013 10 4.26018e+01 2.91634e+00 159 2013 11 3.44469e+01 2.13481e+00 174 2013 12 2.94349e+01 3.38504e-01 160 2014 1 3.22988e+01 1.50392e+00 188 2014 2 4.07417e+01 1.83856e+00 190 2014 3 4.92058e+01 2.75508e+00 219 2014 4 5.65412e+01 1.78522e+00 109 2014 5 6.14163e+01 5.05472e-01 71 2014 6 6.31043e+01 8.97497e-02 72 2014 7 6.16404e+01 7.68024e-01 132 2014 8 5.79566e+01 1.52095e+00 168 2014 9 5.16901e+01 1.88504e+00 144 2014 10 4.19593e+01 2.43101e+00 327 2014 11 3.38861e+01 2.26118e+00 224 2014 12 2.96841e+01 3.43020e-01 240 2015 1 3.28871e+01 1.89232e+00 207 2015 2 3.88207e+01 1.80853e+00 208 2015 3 5.15823e+01 1.54157e+00 80 2015 4 5.61657e+01 2.19208e+00 81 2015 5 6.17082e+01 8.69806e-01 205 2015 6 6.30674e+01 1.47739e-01 128 2015 7 6.13192e+01 5.81586e-01 75 2015 8 5.76999e+01 1.40184e+00 112 2015 9 5.20336e+01 2.17347e+00 120 2015 10 4.20546e+01 2.16646e+00 204 2015 11 3.34555e+01 2.08666e+00 177 2015 12 2.96427e+01 3.40262e-01 112 2016 1 3.25058e+01 1.35561e+00 198 2016 2 4.01463e+01 2.49784e+00 319 2016 3 4.90448e+01 2.91287e+00 224 2016 4 5.69479e+01 1.87709e+00 158 2016 5 6.16898e+01 8.72583e-01 168 2016 6 6.31654e+01 1.45299e-01 167 2016 7 6.14381e+01 6.88860e-01 202 2016 8 5.71266e+01 1.07262e+00 193 2016 9 5.08517e+01 2.45769e+00 236 2016 10 4.23067e+01 2.57478e+00 264 2016 11 3.39537e+01 1.79462e+00 204 2016 12 2.96045e+01 4.84151e-01 209 2017 1 3.18508e+01 1.61257e+00 144 2017 2 4.02325e+01 2.80837e+00 272 2017 3 4.91191e+01 2.51787e+00 239 2017 4 5.71883e+01 1.79591e+00 180 2017 5 6.19144e+01 8.26501e-01 128 2017 6 6.30421e+01 1.68020e-01 64 2017 7 6.15503e+01 7.86203e-01 110 2017 8 5.76934e+01 1.55767e+00 128 2017 9 5.03948e+01 2.19591e+00 206 2017 10 4.15575e+01 2.65644e+00 320 2017 11 3.39376e+01 2.13344e+00 280 2017 12 2.96428e+01 4.13324e-01 178 2018 1 3.20362e+01 1.69748e+00 221 2018 2 4.08834e+01 2.62705e+00 140 2018 3 4.85373e+01 2.88839e+00 237 2018 4 5.74384e+01 2.07548e+00 191 2018 5 6.13514e+01 8.11868e-01 144 2018 6 6.31445e+01 8.97576e-02 96 2018 7 6.17749e+01 7.82355e-01 107 2018 8 5.74680e+01 1.60500e+00 144 2018 9 5.04913e+01 1.66078e+00 229 2018 10 4.22551e+01 2.84015e+00 336 2018 11 3.37786e+01 2.07199e+00 94 2018 12 2.96610e+01 4.23716e-01 160 2019 1 3.22219e+01 1.86302e+00 168 2019 2 3.88926e+01 2.59308e+00 24 2019 3 4.95296e+01 2.54567e+00 249 2019 4 5.73524e+01 1.61603e+00 126 2019 5 6.17824e+01 9.03614e-01 223 2019 6 6.31842e+01 1.12436e-01 80 2019 7 6.20500e+01 9.67229e-01 93 2019 8 5.73712e+01 1.35848e+00 144 2019 9 5.08357e+01 2.68091e+00 229 2019 10 4.34604e+01 2.91765e+00 204 2019 11 3.37832e+01 2.04668e+00 182 2019 12 2.96496e+01 5.48540e-01 112 2020 1 3.20026e+01 1.55606e+00 160 2020 2 4.05851e+01 3.13669e+00 174 2020 3 4.91287e+01 2.44117e+00 176 2020 4 5.72540e+01 2.35485e+00 152 2020 5 6.11189e+01 6.69907e-01 158 2020 6 6.32303e+01 1.21718e-01 160 2020 7 6.14808e+01 4.99660e-01 96 2020 8 5.98319e+01 3.65603e-01 46 2020 9 5.03814e+01 2.17513e+00 92 2020 10 4.13939e+01 2.47866e+00 217 2020 11 3.42387e+01 1.82141e+00 272 2020 12 2.95415e+01 3.99333e-01 202 2021 1 3.21136e+01 1.91435e+00 132 2021 2 4.11884e+01 2.51756e+00 128 2021 3 4.85440e+01 1.83340e+00 160 2021 4 5.68414e+01 2.03533e+00 176 2021 5 6.21170e+01 6.78067e-01 207 2021 6 6.30663e+01 3.33947e-02 64 2021 7 6.19384e+01 5.58614e-01 63 2021 8 5.82603e+01 1.23611e+00 138 2021 9 5.14234e+01 2.62446e+00 124 2021 10 4.14511e+01 1.06955e+00 94 2021 11 3.35487e+01 1.81180e+00 240 2021 12 2.94870e+01 5.34540e-01 175 2022 1 3.23790e+01 1.90877e+00 224 2022 2 4.02046e+01 2.36422e+00 176 2022 3 4.89128e+01 3.17201e+00 185 2022 4 5.90015e+01 5.55134e-01 110 2022 5 6.15002e+01 8.86175e-01 129 2022 6 6.31011e+01 1.96841e-01 166 2022 7 6.11230e+01 6.07714e-01 115 2022 8 5.84736e+01 1.45935e+00 158 2022 9 4.97942e+01 2.08984e+00 112 2022 10 4.26846e+01 2.84204e+00 368 2022 11 3.48846e+01 1.75111e+00 140 2022 12 2.96405e+01 4.91304e-01 255 2023 1 3.21631e+01 1.48979e+00 224 2023 2 3.96806e+01 2.71711e+00 160 2023 3 4.88008e+01 2.13227e+00 176 2023 4 5.79933e+01 1.46811e+00 112 2023 5 6.12466e+01 7.70124e-01 124 2023 6 6.31613e+01 1.38931e-01 116 2023 7 6.18818e+01 1.08310e+00 76 2023 8 5.78309e+01 1.53033e+00 141 2023 9 5.16828e+01 1.53164e+00 161 2023 10 4.14465e+01 2.91618e+00 235 2023 11 3.49004e+01 1.93409e+00 226 2023 12 2.92699e+01 1.84222e-01 61 2024 1 3.20695e+01 2.03871e+00 96 2024 2 4.06559e+01 2.37099e+00 144 2024 3 5.04971e+01 3.05243e+00 175 2024 4 nan nan 0