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 2.47887e+00 5.64372e-01 36 2002 8 3.29984e+00 2.22334e+00 63 2002 9 3.95104e+00 8.44712e-01 72 2002 10 5.63044e+00 4.48584e+00 162 2002 11 5.92499e+00 2.55116e+00 238 2002 12 4.36499e+00 1.30314e+00 208 2003 1 4.75116e+00 1.74807e+00 188 2003 2 3.43878e+00 1.25176e+00 192 2003 3 8.91468e+00 5.66421e+00 77 2003 4 4.77244e+00 2.89473e+00 144 2003 5 7.57524e+00 3.72270e+00 82 2003 6 3.04526e+00 2.88560e+00 64 2003 7 6.89108e+00 1.92363e+00 34 2003 8 1.14804e+01 6.04494e+00 46 2003 9 9.63000e+00 6.55406e+00 36 2003 10 5.69872e+00 4.31772e+00 220 2003 11 8.52182e+00 1.34298e+01 254 2003 12 2.50640e+00 9.56029e-01 223 2004 1 1.94795e+00 4.63350e-01 128 2004 2 3.12008e+00 7.65476e-01 64 2004 3 4.74629e+00 3.57099e+00 134 2004 4 1.99710e+00 6.37271e-01 164 2004 5 2.08083e+00 4.02928e-01 235 2004 6 2.21780e+00 2.26477e-01 16 2004 7 1.86720e+00 2.80926e-01 48 2004 8 2.12791e+00 2.61100e-01 93 2004 9 3.52367e+00 1.69816e+00 74 2004 10 3.45332e+00 1.39954e+00 144 2004 11 3.89629e+00 2.19900e+00 160 2004 12 4.02311e+00 1.48241e+00 176 2005 1 3.04749e+00 8.37566e-01 144 2005 2 3.44740e+00 1.40021e+00 112 2005 3 3.09694e+00 1.07810e+00 192 2005 4 9.35710e+00 9.93942e+00 112 2005 5 7.48332e+00 1.23816e+01 118 2005 6 2.97651e+00 6.74659e-01 64 2005 7 4.97732e+00 1.95552e+00 95 2005 8 1.10545e+00 1.32598e-02 16 2005 9 9.58289e+00 4.38863e+00 64 2005 10 8.74060e+00 1.08140e+01 231 2005 11 4.26785e+00 1.99869e+00 231 2005 12 3.21639e+00 7.99351e-01 152 2006 1 3.28800e+00 1.49117e+00 208 2006 2 3.72977e+00 1.23579e+00 188 2006 3 2.53563e+00 6.00093e-01 234 2006 4 2.49792e+00 4.91768e-01 176 2006 5 1.71489e+00 4.93045e-01 176 2006 6 1.60593e+00 5.08386e-01 105 2006 7 2.37090e+00 7.20252e-01 48 2006 8 2.01447e+00 4.58953e-01 78 2006 9 3.95265e+00 3.74148e+00 141 2006 10 2.77425e+00 9.28086e-01 208 2006 11 2.49087e+00 5.58967e-01 261 2006 12 2.47653e+00 7.47324e-01 174 2007 1 3.51318e+00 9.51506e-01 89 2007 2 3.13657e+00 1.11862e+00 208 2007 3 2.69718e+00 1.05724e+00 286 2007 4 2.02542e+00 4.88108e-01 141 2007 5 1.89095e+00 5.97085e-01 96 2007 6 2.41860e+00 5.00738e-01 48 2007 7 2.14564e+00 5.28599e-01 80 2007 8 2.46095e+00 7.92972e-01 112 2007 9 7.11235e+00 4.02852e+00 112 2007 10 7.77805e+00 5.93983e+00 125 2007 11 5.33434e+00 4.46076e+00 223 2007 12 2.63102e+00 8.79309e-01 142 2008 1 2.31985e+00 7.38344e-01 208 2008 2 2.22533e+00 4.24107e-01 255 2008 3 4.56774e+00 1.16105e+00 194 2008 4 3.36578e+00 1.19273e+00 140 2008 5 3.17845e+00 5.40726e-01 109 2008 6 3.52049e+00 1.02044e+00 96 2008 7 2.37101e+00 7.82863e-01 64 2008 8 1.53786e+00 2.02457e-01 46 2008 9 6.22816e+00 3.34008e+00 112 2008 10 4.40951e+00 1.60849e+00 224 2008 11 3.20526e+00 1.20994e+00 256 2008 12 3.11199e+00 1.27258e+00 176 2009 1 2.69372e+00 1.01833e+00 223 2009 2 2.33200e+00 8.56514e-01 224 2009 3 2.88181e+00 7.67035e-01 220 2009 4 1.30589e+01 1.43279e+01 110 2009 5 1.26846e+01 1.61333e+01 92 2009 6 2.92819e+00 1.58081e+00 68 2009 7 2.21962e+00 8.04794e-01 48 2009 8 3.71044e+00 3.32661e+00 112 2009 9 4.11268e+00 3.11998e+00 104 2009 10 4.52743e+00 2.54709e+00 159 2009 11 4.44328e+00 1.37852e+00 144 2009 12 6.08940e+00 1.06325e+00 48 2010 1 1.42386e+01 2.22449e+01 210 2010 2 9.60313e+00 7.07636e+00 185 2010 3 5.45770e+00 2.18748e+00 192 2010 4 1.39941e+01 1.88688e+01 222 2010 5 4.71705e+00 2.85847e+00 130 2010 6 2.50262e+00 1.17973e+00 96 2010 7 3.18432e+00 7.94180e-01 53 2010 8 2.09093e+00 6.75468e-01 48 2010 9 2.62052e+00 1.01060e+00 184 2010 10 3.28637e+00 3.32209e+00 384 2010 11 2.48493e+00 1.29168e+00 267 2010 12 4.50662e+00 2.39775e+00 224 2011 1 3.00508e+00 9.33206e-01 240 2011 2 2.35370e+00 4.05869e-01 237 2011 3 2.78496e+00 5.82494e-01 192 2011 4 2.78198e+00 7.86250e-01 160 2011 5 2.22712e+00 5.07745e-01 230 2011 6 2.52027e+00 7.00799e-01 128 2011 7 2.62933e+00 3.63437e-01 35 2011 8 2.69561e+00 1.07762e+00 165 2011 9 2.41166e+00 7.40362e-01 176 2011 10 2.58447e+00 7.56558e-01 247 2011 11 2.18123e+00 4.40174e-01 185 2011 12 2.99801e+00 9.23042e-01 168 2012 1 2.55318e+00 1.13087e+00 224 2012 2 2.01698e+00 4.35777e-01 32 2012 3 3.17872e+00 1.78339e+00 201 2012 4 2.20279e+00 6.68822e-01 144 2012 5 1.82023e+00 2.80834e-01 129 2012 6 2.59800e+00 7.18611e-01 96 2012 7 5.00816e+00 3.42886e+00 64 2012 8 3.12738e+00 1.97541e+00 96 2012 9 4.60007e+00 2.48233e+00 97 2012 10 6.32757e+00 2.79319e+00 227 2012 11 2.26453e+00 9.59950e-01 252 2012 12 2.97036e+00 1.33310e+00 96 2013 1 1.86111e+00 9.77102e-01 113 2013 2 1.86798e+00 9.38202e-01 107 2013 3 4.13049e+00 2.02850e+00 154 2013 4 1.14714e+01 1.05311e+01 111 2013 5 2.39659e+00 6.76759e-01 128 2013 6 2.79652e+00 6.67781e-01 53 2013 7 3.82252e+00 1.77142e+00 47 2013 8 4.59001e+00 4.63173e+00 112 2013 9 6.55663e+00 7.68294e+00 178 2013 10 9.31801e+00 1.43663e+01 202 2013 11 5.04729e+00 2.74994e+00 144 2013 12 3.22018e+00 1.04981e+00 181 2014 1 5.41999e+00 3.57352e+00 112 2014 2 3.93002e+00 7.51818e+00 183 2014 3 7.00225e+00 6.89155e+00 156 2014 4 6.30283e+00 3.69115e+00 144 2014 5 1.27024e+01 1.16192e+01 112 2014 6 6.91402e+00 4.00071e+00 80 2014 7 2.83401e+00 5.88369e-01 74 2014 8 1.79427e+00 5.59731e-01 112 2014 9 3.39508e+00 1.83054e+00 117 2014 10 2.68781e+00 6.80838e-01 300 2014 11 2.22659e+00 7.55102e-01 224 2014 12 2.63212e+00 8.31882e-01 204 2015 1 6.33504e+00 5.39031e+00 176 2015 2 4.02259e+00 1.29083e+00 160 2015 3 5.58030e+00 6.22439e+00 172 2015 4 3.06718e+00 1.20767e+00 96 2015 5 4.10645e+00 3.34062e+00 143 2015 6 4.06736e+00 9.95266e-01 110 2015 7 3.03880e+00 1.08557e+00 74 2015 8 2.60767e+00 1.20988e+00 95 2015 9 5.31775e+00 2.98298e+00 64 2015 10 1.14358e+01 1.50515e+01 183 2015 11 1.08516e+01 1.65689e+01 216 2015 12 1.23583e+01 1.02258e+01 96 2016 1 7.17039e+00 5.09204e+00 160 2016 2 4.54926e+00 9.26017e-01 258 2016 3 3.34370e+00 7.23441e-01 144 2016 4 1.77088e+01 2.62952e+01 115 2016 5 5.06693e+00 2.67422e+00 166 2016 6 2.02798e+00 4.56894e-01 144 2016 7 3.64915e+00 1.43436e+00 121 2016 8 2.70548e+00 1.16694e+00 96 2016 9 4.02727e+00 1.93560e+00 84 2016 10 6.08355e+00 7.03817e+00 237 2016 11 2.50660e+00 5.61807e-01 192 2016 12 2.19783e+00 4.61382e-01 208 2017 1 2.96075e+00 1.58321e+00 179 2017 2 3.33179e+00 1.74459e+00 278 2017 3 4.44628e+00 2.94047e+00 202 2017 4 2.87426e+00 1.07922e+00 102 2017 5 2.69282e+00 9.40370e-01 128 2017 6 3.63155e+00 6.77392e-01 32 2017 7 1.66353e+01 1.98239e+01 54 2017 8 2.49228e+00 1.33379e+00 81 2017 9 4.55869e+00 3.17932e+00 128 2017 10 5.43949e+00 6.91312e+00 255 2017 11 2.45927e+00 8.05442e-01 303 2017 12 2.67278e+00 1.15556e+00 175 2018 1 1.99060e+00 5.37620e-01 241 2018 2 2.27962e+00 6.26393e-01 112 2018 3 1.79269e+00 6.66842e-01 239 2018 4 2.55083e+00 9.30618e-01 176 2018 5 3.37954e+00 1.53436e+00 131 2018 6 2.98274e+00 4.50452e-01 68 2018 7 2.23829e+00 6.22873e-01 96 2018 8 1.60837e+01 2.37447e+01 77 2018 9 7.21571e+00 7.37554e+00 158 2018 10 6.17670e+00 5.03716e+00 251 2018 11 8.58014e+00 8.10227e+00 112 2018 12 3.39029e+00 7.02102e-01 128 2019 1 5.06409e+00 2.41410e+00 224 2019 2 8.91221e+00 3.46203e+00 48 2019 3 5.99601e+00 5.97832e+00 192 2019 4 3.55321e+00 7.96133e-01 80 2019 5 4.15359e+00 1.65705e+00 188 2019 6 2.40397e+00 1.07126e+00 91 2019 7 3.45327e+00 1.54160e+00 60 2019 8 2.19007e+00 5.35788e-01 99 2019 9 4.18323e+00 4.60564e+00 182 2019 10 2.52034e+00 7.25520e-01 144 2019 11 3.40950e+00 1.74807e+00 224 2019 12 2.91676e+00 1.03231e+00 160 2020 1 2.72581e+00 7.63868e-01 144 2020 2 3.00666e+00 7.28713e-01 144 2020 3 9.63825e+00 5.06312e+00 171 2020 4 4.26632e+00 2.32716e+00 154 2020 5 4.19980e+00 1.60596e+00 108 2020 6 4.28606e+00 1.52032e+00 48 2020 7 3.66170e+00 2.02330e+00 30 2020 8 1.72823e+00 1.70865e-01 64 2020 9 6.07421e+00 1.68643e+00 68 2020 10 8.13734e+00 6.88261e+00 181 2020 11 4.97711e+00 1.75177e+00 217 2020 12 4.39758e+00 2.09670e+00 272 2021 1 3.88455e+00 9.42632e-01 144 2021 2 4.83117e+00 1.29813e+00 96 2021 3 6.32797e+00 1.81624e+00 128 2021 4 4.24267e+00 2.05231e+00 160 2021 5 9.66010e+00 1.31050e+01 112 2021 6 3.53712e+00 1.22821e+00 40 2021 7 6.00644e+00 3.10771e+00 78 2021 8 5.19899e+00 2.92218e+00 85 2021 9 1.42032e+01 1.36420e+01 80 2021 10 8.66293e+00 1.09632e+01 75 2021 11 8.08678e+00 6.28296e+00 217 2021 12 3.77412e+00 6.56710e-01 80 2022 1 3.05325e+00 9.75442e-01 224 2022 2 2.56079e+00 8.43599e-01 151 2022 3 2.32569e+00 8.82534e-01 208 2022 4 1.05767e+01 4.61646e+00 64 2022 5 6.58466e+00 6.29176e+00 80 2022 6 2.31005e+00 7.10860e-01 99 2022 7 4.42262e+00 3.82931e+00 90 2022 8 3.67418e+00 1.37169e+00 128 2022 9 9.50851e+00 1.36471e+01 124 2022 10 5.77947e+00 4.31659e+00 280 2022 11 3.53297e+00 7.89429e-01 132 2022 12 2.78317e+00 1.05694e+00 211 2023 1 1.89626e+00 4.18964e-01 208 2023 2 2.06323e+00 6.84785e-01 192 2023 3 1.90351e+00 5.39238e-01 141 2023 4 3.37460e+00 1.20270e+00 112 2023 5 2.37610e+00 5.82576e-01 112 2023 6 2.43131e+00 3.74035e-01 47 2023 7 3.75952e+00 1.21480e+00 53 2023 8 3.86905e+00 2.11924e+00 65 2023 9 3.03643e+00 1.45793e+00 138 2023 10 5.42846e+00 3.67217e+00 210 2023 11 4.97712e+00 3.50002e+00 192 2023 12 3.83100e+00 1.10259e+00 80 2024 1 5.13356e+00 1.54273e+00 128 2024 2 2.89979e+00 7.68368e-01 170 2024 3 4.92143e+00 3.97427e+00 98 2024 4 nan nan 0