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 2.18869e+01 8.86348e+00 96 2002 8 1.33087e+01 6.32084e+00 48 2002 9 6.60995e+00 4.76862e+00 128 2002 10 4.97727e+00 5.48916e+00 145 2002 11 3.02318e+00 4.04193e+00 224 2002 12 5.57475e+00 3.56126e+00 189 2003 1 5.67846e+00 3.77360e+00 240 2003 2 9.63189e+00 4.28734e+00 112 2003 3 6.79297e+00 1.46308e+01 96 2003 4 4.94141e+00 4.53660e+00 196 2003 5 2.95175e+00 1.62775e+00 48 2003 6 1.27583e+01 5.22582e+00 41 2003 7 7.78616e+00 5.77906e+00 55 2003 8 3.14328e+00 3.70317e+00 48 2003 9 1.13075e+01 1.43360e+01 112 2003 10 1.14673e+01 1.01720e+01 208 2003 11 4.87549e+00 4.77909e+00 286 2003 12 5.53340e+00 3.00916e+00 176 2004 1 1.41626e+01 4.53260e+00 152 2004 2 5.70169e+00 6.53229e+00 96 2004 3 6.59316e+00 6.38736e+00 232 2004 4 1.53637e+01 6.45800e+00 155 2004 5 2.82103e+01 4.55540e+00 162 2004 6 2.72280e+01 4.31560e+00 93 2004 7 1.26564e+01 7.93669e+00 64 2004 8 1.85766e+01 8.34737e+00 112 2004 9 6.55081e+00 7.14177e+00 144 2004 10 6.58869e+00 9.10620e+00 115 2004 11 3.52942e+00 5.98577e+00 156 2004 12 2.11520e+00 2.09884e+00 128 2005 1 5.83561e+00 4.99786e+00 143 2005 2 9.60073e+00 5.35565e+00 96 2005 3 5.44459e+00 3.49261e+00 208 2005 4 1.66208e+00 1.63096e+00 84 2005 5 1.21012e+01 5.50935e+00 159 2005 6 1.39432e+01 8.96240e+00 122 2005 7 5.04077e+00 5.36823e+00 101 2005 8 7.71528e-01 8.72882e-01 56 2005 9 2.61794e+00 2.93671e+00 84 2005 10 6.43043e+00 3.94595e+00 231 2005 11 1.03371e+01 5.26379e+00 232 2005 12 6.66275e+00 3.79244e+00 176 2006 1 5.78919e+00 3.75836e+00 176 2006 2 7.47655e+00 5.18346e+00 192 2006 3 9.40907e+00 4.57491e+00 230 2006 4 1.92462e+01 7.29218e+00 189 2006 5 2.51933e+01 5.28122e+00 144 2006 6 2.21147e+01 6.82894e+00 84 2006 7 2.06333e+01 2.66440e+00 80 2006 8 1.86195e+01 6.41786e+00 137 2006 9 1.36532e+01 6.90010e+00 144 2006 10 1.28479e+01 7.13741e+00 224 2006 11 1.29258e+01 8.05184e+00 234 2006 12 1.25593e+01 6.48042e+00 112 2007 1 3.44654e+00 4.35971e+00 62 2007 2 5.52844e+00 4.13833e+00 217 2007 3 1.53642e+01 6.56153e+00 303 2007 4 2.02350e+01 6.94836e+00 201 2007 5 2.17422e+01 2.23213e+00 96 2007 6 2.46325e+01 4.43629e+00 64 2007 7 2.05402e+01 5.64338e+00 125 2007 8 1.46220e+01 3.87780e+00 84 2007 9 7.62020e+00 6.99682e+00 112 2007 10 1.54271e+01 7.98560e+00 144 2007 11 1.87940e+01 8.83688e+00 272 2007 12 1.35987e+01 7.07732e+00 130 2008 1 1.48330e+01 9.52688e+00 208 2008 2 9.91237e+00 4.28757e+00 267 2008 3 4.51233e+00 3.77552e+00 207 2008 4 1.00127e+01 6.64821e+00 190 2008 5 1.99299e+01 4.81769e+00 117 2008 6 2.05282e+01 9.23218e+00 128 2008 7 1.82685e+01 5.73208e+00 32 2008 8 2.26917e+01 7.64047e+00 48 2008 9 2.60236e+00 2.97943e+00 144 2008 10 6.52441e+00 5.26640e+00 272 2008 11 7.11150e+00 4.26781e+00 256 2008 12 3.32233e+00 3.17511e+00 240 2009 1 6.58484e+00 2.47319e+00 129 2009 2 1.27123e+01 4.64770e+00 232 2009 3 1.47883e+01 3.96199e+00 171 2009 4 3.59014e+00 3.46012e+00 144 2009 5 1.12022e+01 5.61566e+00 128 2009 6 2.02816e+01 6.40381e+00 53 2009 7 2.14252e+01 5.30258e+00 68 2009 8 1.54172e+01 9.23495e+00 93 2009 9 1.02528e+01 5.12969e+00 91 2009 10 7.41387e+00 5.50128e+00 204 2009 11 4.13724e+00 2.36779e+00 176 2009 12 1.85049e-01 1.48166e-01 64 2010 1 8.74785e-01 8.33597e-01 158 2010 2 1.34015e+00 1.78782e+00 190 2010 3 5.32127e+00 2.84608e+00 208 2010 4 5.41476e+00 6.05267e+00 208 2010 5 1.22616e+01 7.35306e+00 105 2010 6 1.67878e+01 5.90324e+00 128 2010 7 1.71723e+01 3.24331e+00 64 2010 8 2.46746e+01 8.80110e+00 78 2010 9 1.20185e+01 6.82026e+00 177 2010 10 1.63787e+01 6.18013e+00 304 2010 11 1.23924e+01 6.41745e+00 304 2010 12 1.37959e+01 5.31120e+00 240 2011 1 1.19541e+01 4.36777e+00 192 2011 2 8.52453e+00 3.27611e+00 159 2011 3 1.66263e+01 6.15832e+00 192 2011 4 1.53057e+01 5.24415e+00 192 2011 5 2.03846e+01 4.67013e+00 178 2011 6 1.55630e+01 6.07652e+00 128 2011 7 1.38239e+01 5.40893e+00 48 2011 8 1.52957e+01 5.49775e+00 143 2011 9 1.97587e+01 6.51025e+00 176 2011 10 1.66168e+01 8.57727e+00 269 2011 11 1.50019e+01 1.01333e+01 224 2011 12 1.58965e+01 7.61655e+00 270 2012 1 1.57181e+01 5.93506e+00 272 2012 2 2.32034e+01 6.37563e+00 48 2012 3 2.35890e+01 7.67886e+00 208 2012 4 2.49708e+01 4.96989e+00 176 2012 5 2.78834e+01 4.93221e+00 144 2012 6 1.64972e+01 1.07456e+01 71 2012 7 1.37546e+01 1.03066e+01 128 2012 8 7.45193e-01 9.15745e-01 48 2012 9 6.28047e+00 6.92352e+00 72 2012 10 3.08063e+00 5.69083e+00 208 2012 11 9.86249e+00 4.72441e+00 232 2012 12 9.54560e+00 3.97779e+00 112 2013 1 1.16329e+01 6.04808e+00 124 2013 2 1.42746e+01 6.51555e+00 172 2013 3 3.93002e+00 4.60056e+00 192 2013 4 5.98110e+00 6.42634e+00 80 2013 5 1.20279e+01 5.29965e+00 68 2013 6 1.35928e+01 7.41055e+00 73 2013 7 5.55980e+00 6.47121e+00 32 2013 8 9.15026e+00 1.44126e+01 46 2013 9 4.24013e+00 6.37513e+00 176 2013 10 6.67084e+00 1.00255e+01 169 2013 11 7.76455e+00 5.96494e+00 80 2013 12 6.87640e+00 4.00912e+00 173 2014 1 3.97537e+00 5.38578e+00 128 2014 2 3.95395e+00 2.63878e+00 144 2014 3 1.77858e+00 1.92864e+00 156 2014 4 3.05712e+00 4.06475e+00 128 2014 5 1.13643e+01 1.12750e+01 103 2014 6 2.15351e+01 1.00155e+01 142 2014 7 1.72909e+01 3.97229e+00 80 2014 8 2.19045e+01 8.33246e+00 133 2014 9 1.78943e+01 9.08559e+00 120 2014 10 1.22567e+01 6.67416e+00 304 2014 11 1.88463e+01 5.12151e+00 240 2014 12 9.76876e+00 7.50823e+00 205 2015 1 9.56486e-01 9.43324e-01 168 2015 2 3.13105e+00 3.88202e+00 174 2015 3 9.61120e+00 8.47227e+00 120 2015 4 1.76661e+01 6.45094e+00 48 2015 5 1.49034e+01 6.06235e+00 137 2015 6 1.58666e+01 3.95364e+00 86 2015 7 1.83718e+01 4.77673e+00 54 2015 8 1.76659e+01 1.30136e+01 82 2015 9 1.67085e+01 7.45352e+00 128 2015 10 1.04411e+01 7.56637e+00 212 2015 11 3.13866e+00 5.52463e+00 194 2015 12 4.07102e+00 7.21813e+00 112 2016 1 6.90562e-01 1.25748e+00 120 2016 2 2.97275e+00 2.56883e+00 288 2016 3 6.62717e+00 5.28698e+00 162 2016 4 2.58244e+00 1.57944e+00 80 2016 5 1.42909e+01 8.10368e+00 111 2016 6 2.00696e+01 6.38412e+00 128 2016 7 2.12900e+01 5.11783e+00 176 2016 8 9.95243e+00 6.19979e+00 128 2016 9 1.25875e+01 1.03958e+01 184 2016 10 1.07591e+01 7.58925e+00 276 2016 11 1.52163e+01 5.94958e+00 206 2016 12 1.30586e+01 6.89597e+00 208 2017 1 9.54740e+00 7.88719e+00 172 2017 2 5.76375e+00 4.58126e+00 229 2017 3 1.21375e+01 7.40865e+00 245 2017 4 2.06800e+01 6.10446e+00 144 2017 5 1.60531e+01 3.76881e+00 128 2017 6 1.52946e+01 3.72695e+00 51 2017 7 1.37135e+01 3.95835e+00 84 2017 8 5.82089e+00 6.16453e+00 72 2017 9 8.83599e+00 8.56911e+00 147 2017 10 7.41562e+00 4.99735e+00 240 2017 11 1.23822e+01 4.44103e+00 305 2017 12 1.09897e+01 5.89108e+00 124 2018 1 1.69951e+01 7.26113e+00 261 2018 2 1.57752e+01 5.67267e+00 79 2018 3 1.40163e+01 6.01290e+00 230 2018 4 1.69008e+01 5.46052e+00 144 2018 5 1.68032e+01 5.58870e+00 86 2018 6 1.56495e+01 7.87550e+00 105 2018 7 1.55071e+01 6.47062e+00 95 2018 8 8.15354e+00 3.81112e+00 51 2018 9 8.29636e+00 9.68880e+00 213 2018 10 2.46482e+00 3.67416e+00 283 2018 11 3.08610e+00 2.56321e+00 112 2018 12 1.04288e+00 2.43085e+00 128 2019 1 4.76376e-01 8.45537e-01 256 2019 2 2.78765e-01 3.09142e-01 80 2019 3 4.63582e+00 6.68886e+00 256 2019 4 3.94147e+00 3.40196e+00 97 2019 5 1.39785e+01 6.20739e+00 192 2019 6 1.93193e+01 8.10189e+00 82 2019 7 1.83493e+01 4.76258e+00 80 2019 8 1.92599e+01 9.00737e+00 131 2019 9 1.25695e+01 6.53782e+00 240 2019 10 6.28109e+00 6.42007e+00 203 2019 11 1.44489e+01 5.59311e+00 176 2019 12 8.34469e+00 3.94895e+00 128 2020 1 9.09203e+00 4.30771e+00 160 2020 2 9.76052e+00 7.90257e+00 126 2020 3 3.14323e+00 3.44755e+00 163 2020 4 1.30089e+01 5.45178e+00 128 2020 5 1.26920e+01 5.80173e+00 128 2020 6 6.26815e+00 4.62506e+00 96 2020 7 2.33235e+01 2.15487e+00 16 2020 8 1.23557e+01 6.88559e+00 80 2020 9 1.06439e+00 1.51876e+00 91 2020 10 1.53254e+00 2.81289e+00 166 2020 11 9.16042e-01 1.42339e+00 229 2020 12 4.97474e+00 4.52897e+00 242 2021 1 1.76205e+00 1.44880e+00 89 2021 2 5.92129e-01 6.80997e-01 96 2021 3 1.19780e+00 1.69952e+00 133 2021 4 4.18218e+00 5.00349e+00 131 2021 5 8.74895e+00 5.85876e+00 192 2021 6 2.33969e+01 4.53911e+00 48 2021 7 1.47490e+01 1.27608e+01 94 2021 8 3.47426e+00 3.96371e+00 120 2021 9 6.90211e+00 9.38236e+00 62 2021 10 6.99728e-01 1.03571e+00 83 2021 11 2.39550e+00 2.09034e+00 240 2021 12 1.49057e+00 1.25603e+00 126 2022 1 2.75341e+00 2.95412e+00 240 2022 2 6.92246e+00 4.38637e+00 161 2022 3 8.07612e+00 5.48908e+00 192 2022 4 1.31622e+00 1.31184e+00 75 2022 5 1.55266e+01 4.57249e+00 92 2022 6 1.89887e+01 7.32964e+00 114 2022 7 1.58353e+01 8.42823e+00 96 2022 8 1.59392e+01 6.85991e+00 96 2022 9 1.63779e+01 8.61196e+00 171 2022 10 1.41370e+01 7.87073e+00 289 2022 11 1.45623e+01 6.25511e+00 176 2022 12 1.09321e+01 6.30496e+00 206 2023 1 9.58267e+00 5.49232e+00 248 2023 2 6.26185e+00 5.50302e+00 179 2023 3 1.23869e+01 4.59899e+00 176 2023 4 1.89846e+01 5.00716e+00 96 2023 5 1.97401e+01 1.03650e+01 112 2023 6 2.60004e+01 9.68615e+00 114 2023 7 1.29518e+01 6.28943e+00 64 2023 8 1.75906e+01 8.98174e+00 140 2023 9 9.76683e+00 6.34751e+00 144 2023 10 6.19397e+00 4.15793e+00 224 2023 11 6.99046e+00 4.30807e+00 192 2023 12 2.30387e+00 2.25306e+00 80 2024 1 1.00288e+00 1.48225e+00 99 2024 2 2.53763e+00 3.95591e+00 158 2024 3 4.67184e+00 4.32329e+00 112 2024 4 nan nan 0