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 1.40947e+00 2.30834e-01 29 2002 8 1.53528e+00 1.41242e+00 67 2002 9 4.38255e+00 9.46851e-01 56 2002 10 5.70626e+00 4.94167e+00 166 2002 11 1.37364e+01 1.06406e+01 207 2002 12 5.57807e+00 5.47530e+00 144 2003 1 6.17254e+00 3.75892e+00 220 2003 2 2.18839e+00 7.45093e-01 140 2003 3 2.93362e+00 1.37097e+00 64 2003 4 5.50371e+00 6.80847e+00 147 2003 5 7.29788e+00 5.38730e+00 62 2003 6 1.57509e+00 4.83956e-01 63 2003 7 4.79637e+00 4.54877e+00 49 2003 8 3.61263e+00 8.22187e-01 16 2003 9 8.99623e+00 7.59817e+00 48 2003 10 8.87486e+00 1.39974e+01 180 2003 11 3.38607e+00 1.38297e+00 187 2003 12 1.74617e+00 1.12984e+00 190 2004 1 1.23076e+00 4.81683e-01 119 2004 2 2.91880e+00 1.17142e+00 43 2004 3 1.60231e+00 7.88895e-01 152 2004 4 8.95740e-01 3.48880e-01 173 2004 5 7.55825e-01 1.65537e-01 141 2004 6 4.05994e-01 1.29668e-01 8 2004 7 1.43150e+00 7.73318e-01 56 2004 8 8.68761e-01 1.53366e-01 60 2004 9 3.10863e+00 1.83104e+00 82 2004 10 3.63242e+00 3.27521e+00 138 2004 11 3.58618e+00 1.37774e+00 137 2004 12 3.43240e+00 9.77362e-01 125 2005 1 2.89777e+00 1.41339e+00 167 2005 2 1.77233e+00 4.51613e-01 78 2005 3 2.12200e+00 7.32625e-01 175 2005 4 6.33511e+00 1.13368e+01 67 2005 5 2.75610e+00 1.79344e+00 85 2005 6 3.17395e+00 2.77699e+00 94 2005 7 6.55607e+00 7.39956e+00 72 2005 8 2.36207e+01 1.42669e+01 12 2005 9 7.06521e+00 6.16463e+00 109 2005 10 3.98451e+00 2.23306e+00 195 2005 11 2.92170e+00 7.16155e-01 183 2005 12 2.80124e+00 1.08697e+00 119 2006 1 2.68381e+00 5.86213e-01 146 2006 2 2.35994e+00 6.43416e-01 160 2006 3 1.17448e+00 2.97644e-01 170 2006 4 1.02653e+00 2.50001e-01 125 2006 5 8.33273e-01 3.56156e-01 147 2006 6 6.47867e-01 1.22795e-01 62 2006 7 1.33201e+00 5.23452e-01 48 2006 8 2.37402e+00 3.06655e+00 66 2006 9 2.89538e+00 3.61417e+00 152 2006 10 1.62376e+00 5.35885e-01 176 2006 11 1.61369e+00 5.75707e-01 235 2006 12 1.66618e+00 8.69301e-01 158 2007 1 1.78340e+00 3.30509e-01 95 2007 2 1.95712e+00 6.16358e-01 173 2007 3 8.62357e-01 3.38298e-01 204 2007 4 1.29021e+00 6.87024e-01 151 2007 5 8.85554e-01 3.51693e-01 80 2007 6 9.08749e-01 2.10315e-01 60 2007 7 1.02337e+00 3.02233e-01 80 2007 8 7.35278e-01 2.37115e-01 96 2007 9 2.51904e+00 7.83904e-01 96 2007 10 1.51769e+01 1.88888e+01 95 2007 11 2.74238e+00 1.48693e+00 230 2007 12 2.31558e+00 8.17043e-01 83 2008 1 1.71014e+00 7.64615e-01 151 2008 2 2.02578e+00 1.74786e+00 252 2008 3 4.46172e+00 2.24189e+00 148 2008 4 1.64761e+00 4.30053e-01 134 2008 5 1.78560e+00 8.09514e-01 112 2008 6 1.67278e+00 1.02653e+00 116 2008 7 9.20028e-01 5.51265e-01 32 2008 8 6.69057e-01 7.53366e-02 25 2008 9 4.30971e+00 1.99355e+00 86 2008 10 3.03920e+00 1.78406e+00 203 2008 11 1.61558e+00 6.18969e-01 232 2008 12 2.04560e+00 1.03347e+00 165 2009 1 1.82181e+00 1.05014e+00 135 2009 2 1.64040e+00 7.77532e-01 189 2009 3 1.05290e+00 2.26955e-01 135 2009 4 1.42343e+01 1.57271e+01 104 2009 5 8.93918e+00 2.28929e+01 73 2009 6 1.02228e+00 1.66260e-01 48 2009 7 1.05981e+00 2.74696e-01 63 2009 8 6.09363e-01 2.96275e-01 65 2009 9 2.88843e+00 2.35762e+00 123 2009 10 3.75788e+00 3.89632e+00 197 2009 11 7.29959e+00 1.29539e+01 183 2009 12 1.65205e+01 1.17634e+01 47 2010 1 4.51680e+00 3.59718e+00 146 2010 2 9.44727e+00 7.01246e+00 134 2010 3 5.20710e+00 4.50318e+00 160 2010 4 5.84504e+00 3.31459e+00 176 2010 5 8.64934e+00 1.27073e+01 72 2010 6 1.10068e+00 1.78874e+00 107 2010 7 2.39903e+00 1.52958e+00 44 2010 8 nan nan 0 2010 9 1.27680e+00 6.80098e-01 150 2010 10 1.55059e+00 8.92866e-01 332 2010 11 1.92229e+00 1.31434e+00 184 2010 12 3.16985e+00 2.46119e+00 190 2011 1 2.17186e+00 6.76157e-01 168 2011 2 2.39853e+00 1.17890e+00 224 2011 3 1.14174e+00 2.97337e-01 163 2011 4 9.74763e-01 2.80384e-01 132 2011 5 1.17779e+00 4.14825e-01 120 2011 6 9.65363e-01 1.72400e-01 108 2011 7 9.03030e-01 1.10959e-01 31 2011 8 8.94243e-01 3.21184e-01 134 2011 9 1.36027e+00 7.52384e-01 194 2011 10 2.25736e+00 1.15405e+00 259 2011 11 1.29152e+00 4.47259e-01 224 2011 12 1.86304e+00 6.09484e-01 174 2012 1 1.61137e+00 4.77886e-01 192 2012 2 7.10554e-01 3.70731e-01 54 2012 3 1.15336e+00 3.79930e-01 186 2012 4 9.67810e-01 3.99368e-01 209 2012 5 7.10142e-01 2.21647e-01 140 2012 6 2.90962e+00 2.33693e+00 76 2012 7 1.09206e+00 9.49982e-01 62 2012 8 2.23957e-01 4.14686e-03 16 2012 9 8.14860e+00 1.80665e+00 20 2012 10 1.04378e+01 1.65732e+01 237 2012 11 2.69843e+00 2.50337e+00 276 2012 12 1.73315e+00 9.72508e-01 130 2013 1 1.25391e+00 5.04914e-01 101 2013 2 1.28597e+00 6.19324e-01 97 2013 3 3.88416e+00 2.55597e+00 161 2013 4 3.57178e+00 2.24349e+00 84 2013 5 1.27898e+00 6.02367e-01 105 2013 6 1.21168e+00 7.14729e-01 58 2013 7 6.42223e-01 5.70513e-02 16 2013 8 6.43157e+00 9.14976e+00 42 2013 9 2.90833e+00 4.85514e+00 91 2013 10 7.89134e+00 7.57531e+00 104 2013 11 2.32231e+00 1.76974e+00 154 2013 12 2.57626e+00 1.52317e+00 120 2014 1 3.29513e+00 1.58072e+00 119 2014 2 1.77157e+00 1.10238e+00 153 2014 3 6.79591e+00 6.66748e+00 122 2014 4 4.37898e+00 5.05678e+00 80 2014 5 1.42469e+01 2.23192e+01 81 2014 6 5.37821e+00 7.15345e+00 44 2014 7 1.02945e+00 2.87287e-01 78 2014 8 7.94174e-01 3.67590e-01 70 2014 9 1.40784e+00 1.28157e+00 94 2014 10 2.03983e+00 1.42382e+00 337 2014 11 1.49066e+00 6.70360e-01 197 2014 12 2.11433e+00 1.28631e+00 196 2015 1 4.05075e+00 1.81490e+00 159 2015 2 7.56769e+00 1.56569e+01 191 2015 3 2.34352e+00 1.56415e+00 119 2015 4 2.31675e+00 1.48225e+00 48 2015 5 1.31669e+00 9.13013e-01 166 2015 6 1.81487e+00 7.72333e-01 102 2015 7 1.04709e+00 3.55817e-01 60 2015 8 1.86549e+00 5.52225e-01 67 2015 9 3.85367e+00 4.19324e+00 96 2015 10 9.36714e+00 1.02087e+01 140 2015 11 1.10196e+01 1.64202e+01 170 2015 12 1.48375e+01 1.18289e+01 107 2016 1 9.64298e+00 8.20236e+00 191 2016 2 4.28300e+00 2.57507e+00 209 2016 3 2.75983e+00 1.21048e+00 175 2016 4 8.60719e+00 5.50133e+00 54 2016 5 3.22301e+00 8.22426e+00 113 2016 6 8.10258e-01 2.31513e-01 129 2016 7 1.98385e+00 1.78214e+00 140 2016 8 2.07640e+00 2.00286e+00 88 2016 9 2.35224e+00 1.91285e+00 127 2016 10 1.65677e+00 9.05756e-01 244 2016 11 1.17690e+00 3.70326e-01 183 2016 12 1.66750e+00 9.61974e-01 170 2017 1 1.81262e+00 9.47777e-01 162 2017 2 2.98386e+00 1.95132e+00 224 2017 3 3.14420e+00 2.58991e+00 158 2017 4 1.64826e+00 8.97631e-01 125 2017 5 1.51895e+00 5.84309e-01 127 2017 6 1.05799e+00 3.03286e-01 48 2017 7 2.94796e+00 3.78320e+00 96 2017 8 3.90932e+00 3.47456e+00 47 2017 9 6.62535e+00 1.30817e+01 94 2017 10 3.11823e+00 1.19331e+00 201 2017 11 1.98686e+00 1.03018e+00 258 2017 12 3.70493e+00 2.97499e+00 138 2018 1 8.90453e-01 3.98066e-01 208 2018 2 1.00976e+00 3.69095e-01 120 2018 3 1.33187e+00 8.44358e-01 216 2018 4 1.38752e+00 5.85408e-01 176 2018 5 1.82585e+00 1.46816e+00 83 2018 6 7.99148e-01 2.17068e-01 54 2018 7 1.58645e+00 9.21800e-01 96 2018 8 6.57806e+00 8.35648e+00 42 2018 9 3.11673e+00 2.96833e+00 128 2018 10 1.07491e+01 1.39239e+01 195 2018 11 1.58458e+01 1.05760e+01 80 2018 12 7.10594e+00 8.59110e+00 98 2019 1 8.43663e+00 6.56886e+00 210 2019 2 6.26942e+00 5.45126e+00 70 2019 3 3.87084e+00 3.47468e+00 171 2019 4 2.46937e+00 9.76238e-01 79 2019 5 2.45909e+00 2.44202e+00 181 2019 6 1.40213e+00 1.29986e+00 80 2019 7 1.64846e+00 1.03488e+00 52 2019 8 1.07315e+00 6.98887e-01 79 2019 9 2.13759e+00 1.98371e+00 140 2019 10 1.66244e+00 8.28879e-01 128 2019 11 2.65442e+00 9.42393e-01 157 2019 12 3.58434e+00 2.63156e+00 101 2020 1 2.01077e+00 5.86857e-01 121 2020 2 1.98850e+00 7.01303e-01 137 2020 3 6.80172e+00 5.62934e+00 177 2020 4 2.24150e+00 5.96629e-01 117 2020 5 2.06773e+00 1.52828e+00 105 2020 6 1.76316e+00 9.21259e-01 72 2020 7 2.69075e+00 3.07412e+00 48 2020 8 7.83171e-01 3.72266e-01 48 2020 9 2.48640e+01 1.26748e+01 23 2020 10 1.07745e+01 1.12036e+01 135 2020 11 7.93750e+00 5.02642e+00 177 2020 12 3.29500e+00 1.64303e+00 176 2021 1 6.85526e+00 4.49232e+00 97 2021 2 2.67399e+00 1.30801e+00 128 2021 3 3.13000e+00 1.16763e+00 112 2021 4 1.98621e+00 1.16698e+00 154 2021 5 2.44229e+00 1.32731e+00 95 2021 6 2.17275e+00 1.36043e+00 65 2021 7 4.21378e+00 5.72663e+00 81 2021 8 6.30764e+00 5.43439e+00 53 2021 9 2.45644e+00 1.30499e+00 34 2021 10 2.08150e+01 3.98565e+00 18 2021 11 8.33932e+00 9.42429e+00 186 2021 12 3.13116e+00 1.52205e+00 128 2022 1 2.72805e+00 1.69210e+00 173 2022 2 1.46223e+00 5.02652e-01 144 2022 3 9.92264e-01 2.79459e-01 213 2022 4 3.79587e+00 2.37133e+00 32 2022 5 1.72964e+00 1.02416e+00 72 2022 6 9.06483e-01 3.15679e-01 79 2022 7 4.93264e+00 1.40060e+01 118 2022 8 1.77298e+00 1.82747e+00 129 2022 9 3.22780e+00 3.81631e+00 98 2022 10 2.85025e+00 4.51514e+00 289 2022 11 2.42741e+00 1.51345e+00 122 2022 12 3.12111e+00 4.08656e+00 204 2023 1 1.39372e+00 5.29115e-01 188 2023 2 1.30908e+00 2.84143e-01 144 2023 3 1.12085e+00 4.03580e-01 140 2023 4 1.00665e+00 4.95948e-01 114 2023 5 7.41624e-01 3.89424e-01 80 2023 6 6.44600e-01 2.31643e-01 49 2023 7 9.16701e-01 3.70427e-01 44 2023 8 2.53772e+00 1.24290e+00 81 2023 9 1.33081e+00 9.25589e-01 157 2023 10 4.70084e+00 1.00154e+01 171 2023 11 3.31533e+00 1.51383e+00 142 2023 12 6.27568e+00 5.16467e+00 80 2024 1 7.79225e+00 4.63746e+00 116 2024 2 3.61969e+00 2.54471e+00 144 2024 3 2.04646e+00 9.43365e-01 96 2024 4 7.85376e+00 2.63731e+00 32