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 6.15215e+01 7.02635e-01 74 2002 8 5.78395e+01 1.05624e+00 96 2002 9 5.09354e+01 2.46211e+00 144 2002 10 4.40360e+01 2.49089e+00 224 2002 11 3.43155e+01 2.11328e+00 224 2002 12 3.01589e+01 4.77821e-01 146 2003 1 3.22089e+01 1.48628e+00 240 2003 2 4.04586e+01 2.04888e+00 176 2003 3 5.14939e+01 1.92212e+00 112 2003 4 5.72598e+01 2.01666e+00 195 2003 5 6.15597e+01 9.21835e-01 112 2003 6 6.31664e+01 4.38057e-02 48 2003 7 6.17234e+01 6.64148e-01 67 2003 8 5.70938e+01 1.22697e+00 142 2003 9 5.23711e+01 1.74521e+00 150 2003 10 4.24425e+01 2.76748e+00 239 2003 11 3.42369e+01 1.88365e+00 263 2003 12 3.01689e+01 4.91260e-01 240 2004 1 3.25798e+01 1.53575e+00 208 2004 2 4.25881e+01 1.29073e+00 80 2004 3 5.07559e+01 2.22471e+00 240 2004 4 5.77190e+01 1.90481e+00 144 2004 5 6.17547e+01 8.46585e-01 192 2004 6 6.32048e+01 9.01405e-02 130 2004 7 6.19875e+01 6.55953e-01 80 2004 8 5.73382e+01 1.36849e+00 151 2004 9 5.16106e+01 2.16872e+00 144 2004 10 4.23017e+01 2.18966e+00 142 2004 11 3.49209e+01 2.11172e+00 151 2004 12 2.99672e+01 3.96526e-01 144 2005 1 3.23089e+01 1.45289e+00 192 2005 2 3.93390e+01 1.51608e+00 148 2005 3 4.85567e+01 3.16885e+00 137 2005 4 5.75470e+01 1.62911e+00 208 2005 5 6.16156e+01 6.13469e-01 130 2005 6 6.32415e+01 1.78658e-01 129 2005 7 6.15872e+01 5.08978e-01 99 2005 8 5.81800e+01 7.62420e-01 104 2005 9 4.98696e+01 2.20545e+00 126 2005 10 4.24685e+01 2.68443e+00 267 2005 11 3.46963e+01 1.82527e+00 256 2005 12 3.01855e+01 5.04194e-01 240 2006 1 3.27768e+01 1.78179e+00 224 2006 2 3.97564e+01 1.96208e+00 192 2006 3 4.94506e+01 2.82642e+00 264 2006 4 5.73428e+01 1.85015e+00 192 2006 5 6.18740e+01 8.66151e-01 177 2006 6 6.32057e+01 1.64181e-01 144 2006 7 6.20219e+01 7.04832e-01 128 2006 8 5.85648e+01 1.19470e+00 118 2006 9 5.06124e+01 2.33813e+00 160 2006 10 4.34129e+01 2.83335e+00 272 2006 11 3.47679e+01 2.09593e+00 208 2006 12 3.00344e+01 4.61980e-01 144 2007 1 3.29774e+01 1.45698e+00 144 2007 2 4.05797e+01 2.19418e+00 187 2007 3 4.97800e+01 2.55546e+00 320 2007 4 5.72387e+01 1.92121e+00 176 2007 5 6.20822e+01 7.73317e-01 144 2007 6 6.32016e+01 3.09264e-01 170 2007 7 6.18575e+01 7.26510e-01 128 2007 8 5.74443e+01 1.48163e+00 128 2007 9 5.16250e+01 2.46897e+00 147 2007 10 4.49238e+01 1.37420e+00 192 2007 11 3.52178e+01 1.89190e+00 284 2007 12 3.01980e+01 4.65551e-01 208 2008 1 3.19174e+01 1.84326e+00 211 2008 2 3.98635e+01 2.85935e+00 256 2008 3 5.03984e+01 2.94347e+00 192 2008 4 5.76836e+01 1.89222e+00 236 2008 5 6.19054e+01 9.45267e-01 160 2008 6 6.32021e+01 1.82030e-01 149 2008 7 6.20367e+01 4.08876e-01 128 2008 8 5.76187e+01 1.80872e+00 80 2008 9 5.10068e+01 2.41547e+00 192 2008 10 4.23669e+01 2.87506e+00 241 2008 11 3.44547e+01 1.78767e+00 248 2008 12 3.00722e+01 5.48416e-01 224 2009 1 3.30219e+01 1.79840e+00 240 2009 2 4.06720e+01 2.57744e+00 256 2009 3 4.89688e+01 2.43408e+00 272 2009 4 5.84151e+01 1.77056e+00 185 2009 5 6.20378e+01 8.86777e-01 130 2009 6 6.33245e+01 1.33968e-01 139 2009 7 6.19680e+01 6.43106e-01 96 2009 8 5.85341e+01 1.34748e+00 172 2009 9 5.11519e+01 2.41324e+00 215 2009 10 4.30630e+01 2.80166e+00 208 2009 11 3.45469e+01 1.99422e+00 146 2009 12 2.98921e+01 8.92128e-02 80 2010 1 3.19160e+01 1.49867e+00 208 2010 2 4.11606e+01 1.87941e+00 144 2010 3 4.96507e+01 3.05314e+00 247 2010 4 5.63967e+01 1.42066e+00 158 2010 5 6.20795e+01 7.18579e-01 176 2010 6 6.31284e+01 9.93503e-02 162 2010 7 6.14500e+01 7.67475e-01 144 2010 8 5.78049e+01 1.55394e+00 71 2010 9 5.17063e+01 1.82855e+00 233 2010 10 4.28868e+01 2.87990e+00 400 2010 11 3.43391e+01 1.97595e+00 320 2010 12 3.02422e+01 5.39146e-01 256 2011 1 3.32986e+01 1.83149e+00 168 2011 2 4.18144e+01 1.70185e+00 176 2011 3 4.87878e+01 2.19874e+00 192 2011 4 5.73302e+01 1.67346e+00 260 2011 5 6.18201e+01 9.26913e-01 240 2011 6 6.33046e+01 1.59906e-01 96 2011 7 6.12106e+01 9.57104e-01 96 2011 8 5.74104e+01 8.45905e-01 112 2011 9 5.09196e+01 2.10073e+00 193 2011 10 4.28717e+01 3.14821e+00 247 2011 11 3.45859e+01 2.08975e+00 304 2011 12 3.02530e+01 5.66415e-01 282 2012 1 3.22561e+01 1.89557e+00 256 2012 2 3.87855e+01 8.65359e-01 26 2012 3 5.03197e+01 2.32200e+00 226 2012 4 5.78552e+01 1.96886e+00 256 2012 5 6.17321e+01 8.18935e-01 160 2012 6 6.34067e+01 1.20791e-01 80 2012 7 6.20568e+01 2.86621e-01 111 2012 8 5.83001e+01 1.39515e+00 123 2012 9 5.09522e+01 2.54087e+00 143 2012 10 4.23802e+01 2.38841e+00 222 2012 11 3.45314e+01 2.11994e+00 240 2012 12 3.01427e+01 4.38558e-01 144 2013 1 3.34591e+01 1.36731e+00 172 2013 2 4.05211e+01 2.79882e+00 162 2013 3 5.01524e+01 2.61580e+00 218 2013 4 5.77284e+01 1.71352e+00 144 2013 5 6.23907e+01 4.18613e-01 106 2013 6 6.31781e+01 1.92240e-01 93 2013 7 6.11222e+01 5.51039e-01 65 2013 8 5.80569e+01 1.37516e+00 188 2013 9 5.16284e+01 2.65946e+00 149 2013 10 4.24033e+01 3.02152e+00 196 2013 11 3.50379e+01 1.99543e+00 112 2013 12 3.01036e+01 4.44592e-01 192 2014 1 3.23024e+01 1.09652e+00 144 2014 2 4.13969e+01 1.90172e+00 160 2014 3 4.88174e+01 2.29932e+00 182 2014 4 5.68439e+01 1.80960e+00 150 2014 5 6.16615e+01 7.55019e-01 163 2014 6 6.31426e+01 1.21259e-01 160 2014 7 6.17227e+01 8.19209e-01 129 2014 8 5.76777e+01 1.42510e+00 144 2014 9 5.28584e+01 1.58042e+00 111 2014 10 4.22094e+01 2.59229e+00 320 2014 11 3.43116e+01 2.15717e+00 258 2014 12 3.02287e+01 3.64315e-01 184 2015 1 3.32997e+01 1.48597e+00 160 2015 2 3.93410e+01 1.87213e+00 200 2015 3 5.05411e+01 2.04267e+00 144 2015 4 5.59251e+01 1.58995e+00 112 2015 5 6.17201e+01 7.35214e-01 206 2015 6 6.31639e+01 1.19748e-01 144 2015 7 6.17078e+01 8.10182e-01 125 2015 8 5.82343e+01 1.31126e+00 112 2015 9 5.12974e+01 1.81054e+00 64 2015 10 4.20239e+01 2.17776e+00 223 2015 11 3.42216e+01 2.27229e+00 234 2015 12 3.02399e+01 3.18058e-01 114 2016 1 3.27927e+01 1.32076e+00 160 2016 2 4.06661e+01 2.51753e+00 304 2016 3 4.99037e+01 2.73537e+00 144 2016 4 5.81472e+01 1.90312e+00 176 2016 5 6.20608e+01 7.45826e-01 208 2016 6 6.30968e+01 1.54337e-01 115 2016 7 6.16563e+01 7.97848e-01 224 2016 8 5.75632e+01 1.42775e+00 220 2016 9 5.04324e+01 2.25042e+00 176 2016 10 4.22086e+01 2.83774e+00 251 2016 11 3.42549e+01 1.96543e+00 240 2016 12 3.00021e+01 4.36973e-01 218 2017 1 3.23473e+01 1.80900e+00 176 2017 2 4.03372e+01 2.59078e+00 208 2017 3 5.01171e+01 2.37552e+00 241 2017 4 5.73310e+01 1.66367e+00 228 2017 5 6.19565e+01 6.93141e-01 176 2017 6 6.32159e+01 4.15859e-02 64 2017 7 6.19117e+01 4.34609e-01 45 2017 8 5.77107e+01 1.47071e+00 144 2017 9 5.06888e+01 2.11104e+00 199 2017 10 4.18492e+01 2.43332e+00 244 2017 11 3.44069e+01 2.06326e+00 304 2017 12 3.01782e+01 4.19545e-01 191 2018 1 3.28042e+01 1.73444e+00 199 2018 2 4.22346e+01 2.07283e+00 139 2018 3 4.98790e+01 2.83245e+00 240 2018 4 5.80142e+01 1.95856e+00 160 2018 5 6.14695e+01 8.35116e-01 117 2018 6 6.31153e+01 8.48007e-02 128 2018 7 6.21721e+01 6.41571e-01 105 2018 8 5.83337e+01 1.57210e+00 112 2018 9 5.10849e+01 2.12883e+00 208 2018 10 4.31467e+01 2.92580e+00 319 2018 11 3.41444e+01 2.00747e+00 96 2018 12 3.02083e+01 4.02616e-01 160 2019 1 3.26519e+01 1.69426e+00 226 2019 2 4.10881e+01 2.18140e+00 127 2019 3 5.01644e+01 2.38215e+00 224 2019 4 5.80799e+01 1.56128e+00 118 2019 5 6.20985e+01 7.78883e-01 224 2019 6 6.32807e+01 7.14587e-02 96 2019 7 6.24116e+01 9.82852e-01 64 2019 8 5.79815e+01 1.53122e+00 176 2019 9 5.14642e+01 2.39105e+00 320 2019 10 4.31173e+01 3.01340e+00 201 2019 11 3.45119e+01 2.03863e+00 160 2019 12 3.01761e+01 4.95006e-01 156 2020 1 3.24001e+01 1.59164e+00 208 2020 2 4.06748e+01 3.45162e+00 144 2020 3 5.01259e+01 2.39086e+00 256 2020 4 5.77196e+01 2.26569e+00 144 2020 5 6.14824e+01 7.52978e-01 176 2020 6 6.32956e+01 1.30523e-01 160 2020 7 6.17424e+01 5.21334e-01 131 2020 8 5.93535e+01 5.17178e-03 4 2020 9 5.09065e+01 2.51054e+00 96 2020 10 4.25830e+01 2.52618e+00 228 2020 11 3.42164e+01 2.06776e+00 277 2020 12 3.00587e+01 3.81270e-01 240 2021 1 3.31145e+01 1.94058e+00 144 2021 2 4.19096e+01 2.94993e+00 128 2021 3 4.85454e+01 1.88291e+00 156 2021 4 5.72390e+01 2.00939e+00 231 2021 5 6.20996e+01 7.58783e-01 222 2021 6 6.31574e+01 7.66114e-02 70 2021 7 6.18059e+01 6.22744e-01 144 2021 8 5.79655e+01 1.13102e+00 144 2021 9 4.96913e+01 2.30272e+00 98 2021 10 4.26259e+01 1.70652e+00 201 2021 11 3.37502e+01 1.76135e+00 240 2021 12 3.00019e+01 5.11856e-01 192 2022 1 3.26305e+01 1.84982e+00 249 2022 2 4.11516e+01 2.38076e+00 208 2022 3 4.95406e+01 3.07785e+00 208 2022 4 5.91961e+01 4.14115e-01 75 2022 5 6.16282e+01 8.21716e-01 162 2022 6 6.31006e+01 1.46468e-01 160 2022 7 6.19239e+01 9.55763e-01 64 2022 8 5.91606e+01 1.08161e+00 101 2022 9 5.03457e+01 1.82873e+00 112 2022 10 4.31706e+01 2.74076e+00 304 2022 11 3.58936e+01 1.26224e+00 124 2022 12 3.02086e+01 5.80355e-01 176 2023 1 3.22090e+01 1.47626e+00 210 2023 2 4.08230e+01 2.50480e+00 160 2023 3 4.97683e+01 1.86466e+00 146 2023 4 5.77079e+01 1.81485e+00 96 2023 5 6.15218e+01 7.10479e-01 160 2023 6 6.31147e+01 1.34827e-01 96 2023 7 6.15583e+01 1.00715e+00 128 2023 8 5.80227e+01 1.45033e+00 222 2023 9 5.17656e+01 1.56350e+00 96 2023 10 4.18543e+01 2.48143e+00 192 2023 11 3.56103e+01 1.99089e+00 192 2023 12 2.98358e+01 1.98622e-01 81 2024 1 3.25097e+01 1.89935e+00 128 2024 2 4.08402e+01 2.52422e+00 178 2024 3 4.97524e+01 2.70717e+00 127 2024 4 nan nan 0