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 1.64793e+01 7.76566e+00 96 2002 8 1.79033e+01 3.82893e+00 108 2002 9 8.93763e+00 6.33295e+00 96 2002 10 5.38127e+00 5.05664e+00 159 2002 11 2.95494e+00 2.43767e+00 160 2002 12 1.41734e+00 1.50017e+00 216 2003 1 4.34029e+00 4.65739e+00 208 2003 2 7.04162e+00 4.70606e+00 182 2003 3 4.63397e+00 4.63353e+00 112 2003 4 7.00903e+00 3.58109e+00 176 2003 5 1.43212e+01 8.05760e+00 96 2003 6 1.49286e+01 2.29062e+00 66 2003 7 1.19928e+01 2.52426e+00 64 2003 8 1.32731e+01 4.47559e+00 119 2003 9 3.88516e+00 3.17296e+00 143 2003 10 5.60297e+00 3.57463e+00 240 2003 11 3.71552e+00 4.19945e+00 240 2003 12 5.82656e+00 4.09463e+00 192 2004 1 1.51495e+01 3.41857e+00 178 2004 2 5.22235e+00 3.65735e+00 64 2004 3 1.14893e+01 4.25360e+00 208 2004 4 1.37705e+01 6.84725e+00 176 2004 5 2.27758e+01 5.55074e+00 206 2004 6 2.65363e+01 2.87590e+00 76 2004 7 2.50265e+01 3.35206e+00 112 2004 8 2.24564e+01 4.78069e+00 160 2004 9 5.50430e+00 8.68145e+00 96 2004 10 9.85901e+00 7.92684e+00 111 2004 11 7.40639e+00 6.10845e+00 144 2004 12 9.40289e-01 1.47036e+00 172 2005 1 5.98466e+00 4.39471e+00 176 2005 2 7.19741e+00 4.75427e+00 128 2005 3 5.02079e+00 3.60918e+00 192 2005 4 4.18320e+00 3.43430e+00 144 2005 5 1.01648e+01 4.03526e+00 126 2005 6 1.22015e+01 5.66625e+00 80 2005 7 7.89799e+00 6.67467e+00 144 2005 8 1.06112e+01 4.03427e+00 64 2005 9 1.29994e+00 1.74633e+00 64 2005 10 3.15618e+00 3.55716e+00 208 2005 11 5.71198e+00 5.90216e+00 256 2005 12 5.76444e-01 1.08987e+00 162 2006 1 1.79953e+00 1.90090e+00 174 2006 2 5.33827e+00 6.05082e+00 176 2006 3 1.09642e+01 5.27934e+00 269 2006 4 1.67686e+01 4.82401e+00 176 2006 5 2.35072e+01 3.93612e+00 217 2006 6 1.84280e+01 9.36114e+00 160 2006 7 2.30300e+01 3.30958e+00 128 2006 8 2.24928e+01 4.57288e+00 144 2006 9 1.27779e+01 6.81030e+00 135 2006 10 1.07756e+01 7.32050e+00 243 2006 11 3.83788e+00 3.01051e+00 224 2006 12 7.07010e+00 7.65658e+00 144 2007 1 9.11577e+00 5.18765e+00 96 2007 2 4.60663e+00 3.27304e+00 176 2007 3 1.61347e+01 7.52668e+00 304 2007 4 1.30105e+01 8.21876e+00 184 2007 5 1.62190e+01 4.65015e+00 208 2007 6 1.89619e+01 3.04242e+00 112 2007 7 1.93022e+01 3.73340e+00 89 2007 8 2.09090e+01 3.76068e+00 112 2007 9 9.45221e+00 5.69613e+00 77 2007 10 7.57409e+00 4.48856e+00 160 2007 11 6.94920e+00 7.63938e+00 277 2007 12 1.79168e+01 1.00205e+01 98 2008 1 3.90549e+00 3.88265e+00 192 2008 2 7.82804e+00 3.60271e+00 256 2008 3 5.73822e+00 5.39113e+00 192 2008 4 1.37795e+01 4.51413e+00 192 2008 5 1.86786e+01 4.07638e+00 192 2008 6 1.64245e+01 5.00662e+00 184 2008 7 1.79882e+01 6.00841e+00 86 2008 8 2.16797e+01 2.99791e+00 64 2008 9 5.14994e+00 5.70662e+00 146 2008 10 4.60287e+00 3.95050e+00 294 2008 11 2.58467e+00 2.41019e+00 224 2008 12 4.36578e+00 3.94834e+00 197 2009 1 7.08027e+00 5.25015e+00 208 2009 2 1.25279e+01 5.48172e+00 221 2009 3 1.53080e+01 7.31126e+00 180 2009 4 8.42640e+00 5.37768e+00 128 2009 5 1.90989e+01 5.43507e+00 128 2009 6 1.61382e+01 4.99231e+00 64 2009 7 2.29283e+01 2.68934e+00 80 2009 8 1.61483e+01 4.95643e+00 80 2009 9 1.52072e+01 8.09301e+00 124 2009 10 7.35274e+00 5.42570e+00 180 2009 11 1.46968e+00 1.27023e+00 186 2009 12 9.66625e-01 1.00960e+00 68 2010 1 2.57621e+00 2.69819e+00 164 2010 2 2.31338e+00 2.07937e+00 160 2010 3 4.21753e+00 3.58046e+00 208 2010 4 2.92860e+00 2.93205e+00 192 2010 5 1.17204e+01 5.53629e+00 144 2010 6 1.57299e+01 5.50058e+00 112 2010 7 2.01586e+01 1.00750e+01 78 2010 8 1.90262e+01 6.74226e+00 61 2010 9 2.07180e+01 5.78995e+00 224 2010 10 1.50471e+01 5.59419e+00 368 2010 11 9.74883e+00 4.95807e+00 306 2010 12 5.17382e+00 4.11433e+00 240 2011 1 4.42962e+00 2.44242e+00 237 2011 2 1.06072e+01 4.60762e+00 208 2011 3 1.07401e+01 5.12871e+00 208 2011 4 1.83354e+01 8.33924e+00 208 2011 5 2.11576e+01 3.13697e+00 224 2011 6 1.91594e+01 5.37758e+00 160 2011 7 1.91210e+01 3.56378e+00 128 2011 8 2.09231e+01 2.95494e+00 176 2011 9 8.72930e+00 6.96706e+00 126 2011 10 8.11301e+00 2.87821e+00 256 2011 11 8.14157e+00 2.55804e+00 225 2011 12 6.24345e+00 2.29972e+00 161 2012 1 1.02891e+01 5.69825e+00 233 2012 2 9.94534e+00 4.27255e+00 33 2012 3 1.48063e+01 6.76958e+00 210 2012 4 1.63634e+01 4.56350e+00 208 2012 5 2.28142e+01 3.00834e+00 158 2012 6 1.22065e+01 1.06447e+01 104 2012 7 1.79135e+01 5.27065e+00 65 2012 8 2.18580e+01 3.24637e+00 112 2012 9 4.96148e+00 3.09852e+00 96 2012 10 2.38181e+00 2.39689e+00 222 2012 11 7.96201e+00 5.74193e+00 240 2012 12 1.36059e+01 1.22937e+01 136 2013 1 1.29064e+01 1.11001e+01 160 2013 2 2.99997e+00 2.20548e+00 112 2013 3 4.30833e+00 3.99923e+00 176 2013 4 5.96463e+00 4.50163e+00 96 2013 5 2.12863e+01 6.48912e+00 176 2013 6 1.47777e+01 8.14996e+00 96 2013 7 1.01966e+01 1.04830e+00 16 2013 8 1.17501e+01 5.33054e+00 110 2013 9 1.24635e+01 5.76539e+00 217 2013 10 2.98790e+00 2.85389e+00 202 2013 11 1.15595e+00 5.52407e-01 112 2013 12 4.07296e+00 4.00833e+00 131 2014 1 3.43909e+00 2.14054e+00 128 2014 2 1.25295e+01 5.66613e+00 166 2014 3 4.11263e+00 3.43166e+00 143 2014 4 6.84628e+00 5.24881e+00 160 2014 5 5.86420e+00 3.86436e+00 160 2014 6 1.24238e+01 4.76473e+00 114 2014 7 1.66880e+01 5.08628e+00 100 2014 8 2.39336e+01 3.52529e+00 176 2014 9 2.36745e+01 3.07141e+00 176 2014 10 1.23596e+01 4.88781e+00 292 2014 11 4.52923e+00 2.94810e+00 208 2014 12 4.55129e+00 2.59702e+00 192 2015 1 1.70739e+00 1.67392e+00 159 2015 2 4.61176e+00 2.37657e+00 176 2015 3 7.39573e+00 5.44733e+00 144 2015 4 1.70065e+01 2.33456e+00 59 2015 5 1.27910e+01 4.89482e+00 192 2015 6 1.97066e+01 3.21644e+00 155 2015 7 2.18965e+01 2.82912e+00 80 2015 8 2.19772e+01 5.15832e+00 86 2015 9 1.15321e+01 3.13779e+00 96 2015 10 1.07745e+01 5.80229e+00 240 2015 11 8.29553e+00 4.94714e+00 175 2015 12 1.46694e+00 1.22715e+00 144 2016 1 5.38009e-01 6.56781e-01 112 2016 2 3.46409e+00 5.01816e+00 272 2016 3 8.79999e+00 4.55042e+00 168 2016 4 6.09505e+00 3.04002e+00 124 2016 5 1.32914e+01 6.09369e+00 176 2016 6 2.34824e+01 3.59208e+00 121 2016 7 1.11917e+01 2.66302e+00 142 2016 8 2.04318e+01 4.39024e+00 92 2016 9 1.02097e+01 6.18949e+00 155 2016 10 1.23275e+01 6.32029e+00 288 2016 11 7.84454e+00 3.76229e+00 208 2016 12 5.57856e+00 3.66424e+00 208 2017 1 9.35996e+00 7.21558e+00 174 2017 2 7.10333e+00 3.08898e+00 270 2017 3 8.30517e+00 6.60409e+00 221 2017 4 1.86618e+01 6.99079e+00 160 2017 5 1.21298e+01 3.50385e+00 112 2017 6 1.62054e+01 1.72855e+00 64 2017 7 1.47709e+01 4.65381e+00 144 2017 8 1.74183e+01 2.99815e+00 60 2017 9 1.55649e+01 5.78768e+00 192 2017 10 6.18432e+00 4.95547e+00 218 2017 11 9.07149e+00 3.18773e+00 240 2017 12 4.92274e+00 4.41995e+00 128 2018 1 5.37565e+00 3.72525e+00 208 2018 2 1.42932e+01 8.78123e+00 42 2018 3 1.46261e+01 7.51937e+00 254 2018 4 1.26784e+01 4.63655e+00 202 2018 5 1.23981e+01 5.58268e+00 171 2018 6 1.99376e+01 3.98742e+00 112 2018 7 1.51239e+01 3.90897e+00 86 2018 8 1.82950e+01 4.71610e+00 88 2018 9 4.55447e+00 4.01168e+00 115 2018 10 6.74233e-01 9.96795e-01 222 2018 11 2.87894e+00 2.34469e+00 80 2018 12 1.42910e+00 2.34383e+00 125 2019 1 1.57398e+00 3.00099e+00 176 2019 2 4.80325e+00 3.52386e+00 48 2019 3 6.04250e+00 4.92191e+00 224 2019 4 1.45678e+00 9.01199e-01 80 2019 5 1.68651e+01 4.96526e+00 193 2019 6 1.99615e+01 4.94252e+00 80 2019 7 1.64042e+01 3.87942e+00 138 2019 8 2.07244e+01 2.74577e+00 144 2019 9 1.43145e+01 4.78691e+00 240 2019 10 1.61562e+01 9.36561e+00 128 2019 11 5.43834e+00 2.97705e+00 192 2019 12 4.84099e+00 5.70140e+00 70 2020 1 4.05871e+00 3.66779e+00 144 2020 2 1.82549e+00 2.25235e+00 160 2020 3 1.06969e+01 7.82604e+00 166 2020 4 9.18344e+00 3.70234e+00 144 2020 5 9.63044e+00 5.15511e+00 120 2020 6 1.75566e+01 1.13698e+01 128 2020 7 2.00774e+01 1.20194e+00 64 2020 8 2.23505e+01 1.82472e+00 48 2020 9 1.24453e+01 9.95510e+00 80 2020 10 4.27663e+00 4.09954e+00 212 2020 11 1.40232e+00 2.01973e+00 266 2020 12 1.69290e+00 2.15365e+00 256 2021 1 2.11597e+00 1.30194e+00 123 2021 2 5.63288e+00 3.40962e+00 124 2021 3 9.70427e+00 6.53257e+00 158 2021 4 7.98407e+00 4.32379e+00 175 2021 5 1.12410e+01 3.98877e+00 133 2021 6 1.86421e+01 1.93919e+00 48 2021 7 2.08997e+01 6.23532e+00 112 2021 8 1.12446e+01 8.20456e+00 130 2021 9 3.33998e+00 2.64288e+00 84 2021 10 7.20347e-01 1.19007e+00 112 2021 11 2.48387e+00 2.54752e+00 224 2021 12 2.97685e+00 3.09217e+00 105 2022 1 2.42406e+00 2.63707e+00 176 2022 2 1.02966e+01 5.24100e+00 185 2022 3 1.47555e+01 6.79752e+00 254 2022 4 2.12574e+01 6.57165e+00 64 2022 5 2.02469e+01 5.84453e+00 159 2022 6 2.10885e+01 4.43365e+00 176 2022 7 2.30727e+01 3.90160e+00 50 2022 8 2.11666e+01 4.55045e+00 160 2022 9 9.85551e+00 5.33481e+00 107 2022 10 1.28129e+01 5.89641e+00 282 2022 11 1.52208e+01 5.41144e+00 190 2022 12 3.93357e+00 4.35669e+00 144 2023 1 1.30371e+01 5.27386e+00 224 2023 2 1.13647e+01 6.66028e+00 223 2023 3 2.04311e+01 5.57628e+00 161 2023 4 1.49821e+01 7.98143e+00 91 2023 5 1.87748e+01 6.91341e+00 144 2023 6 2.66784e+01 2.66731e+00 128 2023 7 1.75249e+01 6.15810e+00 112 2023 8 1.38786e+01 5.78827e+00 156 2023 9 1.15039e+01 4.90110e+00 128 2023 10 9.84669e+00 6.21008e+00 208 2023 11 4.14393e+00 4.32600e+00 160 2023 12 2.53305e+00 2.10149e+00 96 2024 1 1.45872e+00 2.09384e+00 96 2024 2 4.25948e+00 2.06892e+00 176 2024 3 3.52333e+00 2.51746e+00 80 2024 4 nan nan 0