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 6.16173e+01 7.36757e-01 27 2002 8 5.69709e+01 5.71883e-01 48 2002 9 5.02620e+01 2.26244e+00 126 2002 10 4.35994e+01 2.25634e+00 160 2002 11 3.37862e+01 2.20226e+00 219 2002 12 2.89779e+01 7.09372e-02 128 2003 1 3.18724e+01 1.64530e+00 205 2003 2 3.92588e+01 2.41210e+00 155 2003 3 nan nan 0 2003 4 5.84235e+01 1.59784e+00 96 2003 5 6.24121e+01 3.85502e-01 48 2003 6 6.25348e+01 2.18686e-01 64 2003 7 6.21621e+01 9.02034e-02 32 2003 8 5.69467e+01 1.36091e+00 25 2003 9 5.14398e+01 2.30585e+00 92 2003 10 4.17176e+01 2.85671e+00 229 2003 11 3.33966e+01 1.85504e+00 296 2003 12 2.91810e+01 4.11951e-01 180 2004 1 3.10009e+01 1.38460e+00 112 2004 2 4.18116e+01 1.65307e+00 50 2004 3 5.04414e+01 1.74047e+00 108 2004 4 5.72461e+01 1.73383e+00 107 2004 5 6.17644e+01 7.83077e-01 114 2004 6 6.26493e+01 1.91965e-01 64 2004 7 6.26287e+01 1.44688e-01 48 2004 8 5.62976e+01 1.11173e+00 69 2004 9 5.12902e+01 2.47564e+00 78 2004 10 4.28980e+01 1.56083e+00 56 2004 11 3.41917e+01 1.95938e+00 118 2004 12 2.89080e+01 9.83294e-02 106 2005 1 3.22102e+01 1.63549e+00 195 2005 2 3.84763e+01 1.83955e+00 96 2005 3 4.79296e+01 2.52980e+00 136 2005 4 5.65889e+01 2.22477e+00 48 2005 5 6.18481e+01 6.25431e-01 54 2005 6 6.24143e+01 1.52463e-01 48 2005 7 6.21603e+01 6.53653e-01 68 2005 8 5.75779e+01 1.43422e+00 74 2005 9 5.10448e+01 2.77959e+00 80 2005 10 4.13986e+01 2.60577e+00 268 2005 11 3.40708e+01 1.90868e+00 240 2005 12 2.93272e+01 5.23893e-01 224 2006 1 3.17522e+01 2.00548e+00 144 2006 2 3.85886e+01 2.11321e+00 167 2006 3 4.89622e+01 3.02370e+00 207 2006 4 5.68887e+01 2.08524e+00 152 2006 5 6.18244e+01 8.41310e-01 205 2006 6 6.24772e+01 2.60164e-01 100 2006 7 6.22023e+01 6.62389e-01 109 2006 8 5.85182e+01 1.31421e+00 104 2006 9 4.97176e+01 2.13881e+00 134 2006 10 4.23313e+01 3.13829e+00 251 2006 11 3.36360e+01 1.98623e+00 272 2006 12 2.92835e+01 4.21127e-01 148 2007 1 3.28197e+01 2.05665e+00 96 2007 2 4.03373e+01 2.20004e+00 160 2007 3 4.87192e+01 2.67918e+00 254 2007 4 5.79095e+01 1.68267e+00 176 2007 5 6.11327e+01 8.61546e-01 62 2007 6 6.26152e+01 1.33017e-01 55 2007 7 6.19567e+01 7.57969e-01 96 2007 8 5.68995e+01 1.57814e+00 96 2007 9 5.01191e+01 2.59806e+00 151 2007 10 4.41002e+01 1.08757e+00 112 2007 11 3.41009e+01 2.10166e+00 272 2007 12 2.93719e+01 4.93958e-01 153 2008 1 3.16003e+01 2.07947e+00 180 2008 2 3.92022e+01 2.98684e+00 263 2008 3 4.99729e+01 2.78518e+00 161 2008 4 5.76468e+01 1.34997e+00 117 2008 5 6.18826e+01 9.09384e-01 174 2008 6 6.26517e+01 1.99238e-01 112 2008 7 6.23014e+01 4.98593e-01 64 2008 8 5.94275e+01 1.12740e-01 32 2008 9 5.12244e+01 1.72357e+00 76 2008 10 4.17822e+01 2.98089e+00 243 2008 11 3.39767e+01 1.76795e+00 230 2008 12 2.94090e+01 4.78218e-01 176 2009 1 3.24861e+01 1.44303e+00 128 2009 2 3.96612e+01 2.60695e+00 181 2009 3 4.73599e+01 2.15339e+00 161 2009 4 5.63585e+01 2.23240e+00 48 2009 5 6.17780e+01 7.87179e-01 48 2009 6 6.26584e+01 1.96702e-01 72 2009 7 6.23706e+01 3.17784e-01 79 2009 8 5.72340e+01 1.40217e+00 96 2009 9 5.02899e+01 2.14694e+00 127 2009 10 4.20850e+01 2.44329e+00 188 2009 11 3.33215e+01 1.77553e+00 188 2009 12 2.94601e+01 4.09484e-01 35 2010 1 3.08999e+01 1.52108e+00 144 2010 2 4.04321e+01 2.15593e+00 114 2010 3 4.76878e+01 3.02911e+00 102 2010 4 5.66218e+01 1.47089e+00 133 2010 5 6.14640e+01 9.04231e-01 63 2010 6 6.25189e+01 1.19983e-01 157 2010 7 6.17547e+01 6.90676e-01 80 2010 8 5.97121e+01 5.97126e-01 31 2010 9 5.10836e+01 2.05236e+00 206 2010 10 4.26755e+01 2.80581e+00 350 2010 11 3.38830e+01 1.74780e+00 240 2010 12 2.94338e+01 4.99971e-01 269 2011 1 3.20063e+01 1.82168e+00 160 2011 2 4.00178e+01 1.25813e+00 142 2011 3 4.85247e+01 1.70932e+00 144 2011 4 5.66404e+01 1.80662e+00 160 2011 5 6.16312e+01 8.75917e-01 167 2011 6 6.27902e+01 1.27021e-01 96 2011 7 6.17564e+01 8.15380e-01 112 2011 8 5.69395e+01 1.06877e+00 144 2011 9 5.03811e+01 2.37045e+00 164 2011 10 4.22623e+01 2.95517e+00 336 2011 11 3.41893e+01 2.20678e+00 224 2011 12 2.93424e+01 5.59275e-01 240 2012 1 3.16413e+01 1.88896e+00 252 2012 2 3.95636e+01 1.67260e+00 64 2012 3 4.96153e+01 2.35392e+00 240 2012 4 5.75560e+01 1.92533e+00 246 2012 5 6.14937e+01 9.35204e-01 132 2012 6 6.24984e+01 2.66626e-03 16 2012 7 6.18569e+01 4.33977e-01 82 2012 8 5.58754e+01 9.26516e-04 16 2012 9 4.90199e+01 1.75301e+00 68 2012 10 4.19859e+01 2.73723e+00 216 2012 11 3.37639e+01 2.24960e+00 238 2012 12 2.93917e+01 3.89499e-01 150 2013 1 3.32359e+01 1.12503e+00 128 2013 2 3.90521e+01 2.54030e+00 112 2013 3 4.82720e+01 3.11171e+00 160 2013 4 5.65698e+01 1.57204e+00 64 2013 5 6.25690e+01 2.27327e-01 65 2013 6 6.26649e+01 1.53648e-01 98 2013 7 nan nan 0 2013 8 5.87209e+01 1.00489e-02 16 2013 9 5.08562e+01 2.27434e+00 147 2013 10 4.09656e+01 2.74745e+00 152 2013 11 3.41367e+01 2.19036e+00 96 2013 12 2.90645e+01 3.67893e-01 118 2014 1 3.11623e+01 9.95166e-01 78 2014 2 3.98193e+01 2.22477e+00 126 2014 3 4.76927e+01 2.19890e+00 85 2014 4 nan nan 0 2014 5 6.12981e+01 1.49462e-03 16 2014 6 6.27302e+01 7.99962e-02 18 2014 7 6.19633e+01 6.95758e-01 100 2014 8 5.74141e+01 1.74525e+00 144 2014 9 5.12711e+01 2.05218e+00 132 2014 10 4.20168e+01 2.71098e+00 334 2014 11 3.34331e+01 2.35533e+00 240 2014 12 2.93730e+01 3.78864e-01 190 2015 1 3.28225e+01 1.64919e+00 144 2015 2 3.87879e+01 1.90137e+00 132 2015 3 5.05870e+01 2.34597e+00 64 2015 4 5.68310e+01 1.86988e+00 32 2015 5 6.18555e+01 7.43353e-01 172 2015 6 6.24959e+01 1.80232e-01 81 2015 7 6.19152e+01 5.53390e-01 41 2015 8 5.86175e+01 1.39824e+00 79 2015 9 5.20223e+01 2.00675e+00 106 2015 10 4.15252e+01 2.16298e+00 224 2015 11 3.36575e+01 2.03272e+00 167 2015 12 2.93690e+01 3.17921e-01 96 2016 1 3.22383e+01 1.38363e+00 176 2016 2 3.99225e+01 2.38461e+00 272 2016 3 4.85396e+01 2.51718e+00 237 2016 4 5.53165e+01 2.29159e-03 16 2016 5 6.15260e+01 6.43120e-01 53 2016 6 6.25708e+01 1.72093e-01 128 2016 7 6.20201e+01 6.72053e-01 176 2016 8 5.66997e+01 1.19886e+00 155 2016 9 4.98269e+01 2.29425e+00 228 2016 10 4.15229e+01 2.76684e+00 251 2016 11 3.38309e+01 1.79972e+00 200 2016 12 2.93759e+01 5.73479e-01 176 2017 1 3.15220e+01 1.54666e+00 157 2017 2 3.94936e+01 2.81332e+00 226 2017 3 4.99519e+01 2.47047e+00 177 2017 4 5.64520e+01 1.54165e+00 144 2017 5 6.15912e+01 8.62952e-01 112 2017 6 6.25680e+01 0.00000e+00 7 2017 7 6.17060e+01 7.82680e-01 60 2017 8 5.68378e+01 1.43748e+00 80 2017 9 5.05359e+01 2.22503e+00 193 2017 10 4.12192e+01 2.24891e+00 274 2017 11 3.34393e+01 2.03602e+00 279 2017 12 2.91827e+01 3.76116e-01 178 2018 1 3.17020e+01 1.71572e+00 247 2018 2 4.06388e+01 1.89318e+00 126 2018 3 4.77436e+01 2.85244e+00 112 2018 4 5.75963e+01 2.11218e+00 123 2018 5 6.12619e+01 1.03358e+00 73 2018 6 6.25607e+01 1.98117e-01 80 2018 7 6.19843e+01 7.22473e-01 67 2018 8 5.56255e+01 3.67027e-01 48 2018 9 4.96149e+01 1.63478e+00 169 2018 10 4.19527e+01 2.93008e+00 352 2018 11 3.30896e+01 1.74035e+00 98 2018 12 2.92901e+01 4.57360e-01 80 2019 1 3.28173e+01 1.35564e+00 74 2019 2 3.60190e+01 2.34484e-03 16 2019 3 4.87522e+01 2.74826e+00 127 2019 4 5.71975e+01 1.51698e+00 80 2019 5 6.19583e+01 7.71190e-01 193 2019 6 6.24751e+01 8.87929e-02 32 2019 7 6.15118e+01 6.18981e-01 96 2019 8 5.77926e+01 1.66486e+00 141 2019 9 5.06007e+01 2.43043e+00 219 2019 10 4.31286e+01 2.38738e+00 166 2019 11 3.26750e+01 1.64992e+00 116 2019 12 2.93308e+01 5.27969e-01 94 2020 1 3.11728e+01 1.67868e+00 121 2020 2 3.98306e+01 2.94098e+00 176 2020 3 4.91217e+01 2.22651e+00 80 2020 4 5.76544e+01 2.07054e+00 73 2020 5 6.09614e+01 6.81754e-01 112 2020 6 6.26876e+01 5.34885e-03 16 2020 7 6.18220e+01 1.74938e-01 54 2020 8 5.93443e+01 7.85977e-01 80 2020 9 5.13679e+01 1.92610e+00 53 2020 10 4.09232e+01 2.13187e+00 152 2020 11 3.35319e+01 2.15801e+00 112 2020 12 2.92371e+01 4.06093e-01 128 2021 1 3.14666e+01 1.98213e+00 64 2021 2 3.98185e+01 2.73474e+00 107 2021 3 4.83922e+01 2.12650e+00 88 2021 4 5.70592e+01 2.16587e+00 86 2021 5 6.23449e+01 6.37395e-01 77 2021 6 6.27542e+01 1.35643e-01 45 2021 7 6.15456e+01 4.42784e-01 28 2021 8 5.72543e+01 1.20152e+00 64 2021 9 5.07934e+01 2.62685e+00 127 2021 10 4.05600e+01 2.05213e+00 55 2021 11 3.33222e+01 1.98254e+00 101 2021 12 2.92309e+01 4.84275e-01 72 2022 1 3.12672e+01 1.66523e+00 173 2022 2 4.13095e+01 1.96796e+00 128 2022 3 4.89559e+01 3.00399e+00 186 2022 4 5.88525e+01 3.84101e-03 16 2022 5 6.13983e+01 8.35931e-01 48 2022 6 6.25752e+01 2.02084e-01 114 2022 7 6.18038e+01 5.25204e-01 92 2022 8 5.84952e+01 1.67210e+00 96 2022 9 4.87204e+01 9.79175e-01 78 2022 10 4.24383e+01 2.58474e+00 300 2022 11 3.48031e+01 1.57926e+00 132 2022 12 2.92856e+01 5.20950e-01 224 2023 1 3.16357e+01 1.57981e+00 224 2023 2 3.93227e+01 2.71308e+00 160 2023 3 4.86874e+01 2.12781e+00 144 2023 4 5.72303e+01 1.96830e+00 48 2023 5 6.11848e+01 7.95407e-01 101 2023 6 6.24757e+01 1.47097e-01 63 2023 7 6.18329e+01 9.26880e-01 48 2023 8 5.73738e+01 1.25646e+00 128 2023 9 5.14937e+01 1.44775e+00 92 2023 10 4.14962e+01 2.99938e+00 218 2023 11 3.47431e+01 1.96514e+00 183 2023 12 2.87594e+01 1.76029e-03 7 2024 1 3.29724e+01 2.15931e+00 10 2024 2 4.07021e+01 2.11988e+00 95 2024 3 5.13616e+01 2.74313e+00 95 2024 4 nan nan 0