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 1.11542e+01 3.79131e+00 145 2002 8 8.07904e+00 1.61889e+00 122 2002 9 4.92176e+00 4.48892e+00 59 2002 10 5.24682e+00 3.47976e+00 125 2002 11 2.39179e+00 1.11907e+00 179 2002 12 9.36606e-01 1.32311e+00 128 2003 1 2.56841e-01 3.45358e-01 208 2003 2 1.25333e+00 5.20377e-01 168 2003 3 3.32318e+00 1.96506e+00 152 2003 4 2.14537e+00 2.00055e+00 128 2003 5 3.38998e-01 1.29039e-02 16 2003 6 1.03486e+00 4.20808e-02 16 2003 7 8.32582e-01 5.52386e-01 64 2003 8 1.53722e+00 1.62898e+00 76 2003 9 3.01521e+00 2.41421e+00 120 2003 10 6.19212e+00 2.67280e+00 224 2003 11 6.72331e+00 2.36574e+00 256 2003 12 1.59617e+00 8.07264e-01 207 2004 1 3.90370e+00 1.65414e+00 112 2004 2 3.48089e+00 1.68067e+00 80 2004 3 2.49160e+00 1.56117e+00 225 2004 4 4.11985e+00 3.00837e+00 174 2004 5 9.76197e+00 3.32571e+00 113 2004 6 1.52822e+00 3.75261e-01 58 2004 7 5.64805e-01 6.80108e-01 96 2004 8 2.51633e+00 2.15947e+00 144 2004 9 1.90490e+00 2.00573e+00 160 2004 10 2.67089e+00 3.14201e+00 112 2004 11 1.74161e+00 1.08947e+00 84 2004 12 7.50060e-01 3.88686e-01 149 2005 1 1.66324e+00 7.78145e-01 133 2005 2 1.57167e+00 7.80576e-01 96 2005 3 2.68191e+00 1.88469e+00 128 2005 4 2.24475e+00 1.83182e+00 120 2005 5 7.13115e+00 3.58605e+00 112 2005 6 5.06097e+00 4.44590e+00 192 2005 7 3.44240e+00 2.62170e+00 162 2005 8 3.28266e+00 3.60997e+00 80 2005 9 5.11632e+00 4.51266e+00 192 2005 10 6.73978e+00 3.32748e+00 289 2005 11 3.33553e+00 1.70313e+00 192 2005 12 2.92519e+00 1.97834e+00 140 2006 1 2.16413e+00 1.19122e+00 133 2006 2 1.67888e+00 1.04725e+00 160 2006 3 5.57905e+00 2.19544e+00 208 2006 4 5.52759e+00 3.47922e+00 197 2006 5 2.68790e+00 1.75104e+00 192 2006 6 4.86120e+00 3.33697e+00 180 2006 7 1.13166e+01 1.41256e+00 50 2006 8 8.21738e+00 2.69621e+00 129 2006 9 6.73844e+00 1.49949e+00 164 2006 10 5.76346e+00 3.21166e+00 224 2006 11 2.71681e+00 1.83270e+00 271 2006 12 3.72544e+00 1.26460e+00 192 2007 1 2.28078e+00 8.51869e-01 96 2007 2 3.77161e+00 2.13420e+00 120 2007 3 4.56739e+00 1.53638e+00 208 2007 4 6.36388e+00 2.56630e+00 176 2007 5 8.95036e+00 3.41542e+00 80 2007 6 7.44019e+00 2.98947e+00 125 2007 7 5.43814e+00 4.37228e+00 80 2007 8 9.96389e+00 1.37444e+00 46 2007 9 5.91983e+00 2.02762e+00 128 2007 10 4.06560e+00 2.85978e+00 192 2007 11 4.09934e+00 1.19291e+00 208 2007 12 4.08275e+00 1.55951e+00 145 2008 1 2.03322e+00 9.31825e-01 139 2008 2 3.24098e+00 2.45337e+00 251 2008 3 1.21579e+00 1.69355e+00 192 2008 4 4.46387e+00 3.08832e+00 144 2008 5 2.98658e+00 2.38224e+00 96 2008 6 1.15541e+00 1.54219e+00 165 2008 7 1.10213e+00 1.18273e+00 85 2008 8 1.53080e+00 1.29648e+00 144 2008 9 4.48369e+00 2.54900e+00 164 2008 10 5.20006e+00 1.83385e+00 195 2008 11 5.88480e+00 1.69545e+00 268 2008 12 3.24319e+00 1.23882e+00 144 2009 1 1.62873e+00 1.44780e+00 176 2009 2 9.42277e-01 7.18797e-01 142 2009 3 2.83863e+00 2.05157e+00 132 2009 4 7.34144e-01 1.54294e+00 98 2009 5 1.56725e+00 1.37704e+00 92 2009 6 5.94465e-01 8.09240e-01 159 2009 7 4.48151e+00 2.61039e+00 87 2009 8 4.43713e+00 2.64072e+00 112 2009 9 6.68028e+00 1.93423e+00 136 2009 10 4.38570e+00 1.86890e+00 112 2009 11 3.41930e+00 1.86299e+00 144 2009 12 2.59231e+00 6.86502e-01 110 2010 1 1.55287e+00 9.20537e-01 175 2010 2 3.94053e-01 1.13247e+00 176 2010 3 3.30010e-01 4.06620e-01 169 2010 4 4.22027e-01 3.90199e-01 160 2010 5 2.22824e+00 1.85512e+00 169 2010 6 5.25454e-01 7.19118e-01 180 2010 7 2.93075e+00 1.59856e+00 153 2010 8 2.41767e+00 1.38351e+00 96 2010 9 2.60788e+00 1.34414e+00 215 2010 10 5.15402e+00 1.84400e+00 320 2010 11 2.26909e+00 7.44990e-01 208 2010 12 1.07694e+00 7.08143e-01 205 2011 1 5.39523e-01 4.41135e-01 208 2011 2 1.38487e+00 8.52742e-01 192 2011 3 2.62652e+00 1.75175e+00 192 2011 4 1.78820e+00 1.37809e+00 111 2011 5 2.58025e+00 2.51952e+00 208 2011 6 3.37954e-01 3.97113e-01 138 2011 7 1.72620e+00 5.56051e-01 128 2011 8 7.10692e-01 8.90876e-01 130 2011 9 1.67924e+00 1.27189e+00 209 2011 10 4.25087e+00 1.25929e+00 320 2011 11 1.93666e+00 8.63088e-01 128 2011 12 2.04264e+00 5.38570e-01 65 2012 1 1.82826e+00 8.47274e-01 192 2012 2 2.73181e+00 5.51741e-01 48 2012 3 6.05140e+00 2.79372e+00 220 2012 4 7.40930e+00 3.41270e+00 208 2012 5 8.20594e+00 3.46855e+00 176 2012 6 5.94403e+00 3.08052e+00 154 2012 7 6.29912e+00 2.00715e+00 78 2012 8 3.26819e+00 1.35800e+00 112 2012 9 4.46960e+00 3.17433e+00 171 2012 10 5.63283e+00 3.17825e+00 288 2012 11 2.41044e+00 1.12928e+00 272 2012 12 5.09342e+00 2.27015e+00 143 2013 1 3.81928e+00 1.10570e+00 128 2013 2 2.23925e+00 9.71172e-01 80 2013 3 5.07045e-01 7.50651e-01 208 2013 4 7.75245e+00 4.18638e+00 107 2013 5 4.82951e+00 2.57722e+00 127 2013 6 9.26431e+00 4.49870e+00 80 2013 7 2.97800e+00 1.86550e+00 160 2013 8 9.72292e-01 9.42154e-01 89 2013 9 3.40137e+00 3.13521e+00 188 2013 10 6.90516e+00 2.30175e+00 176 2013 11 5.41477e+00 2.04512e+00 176 2013 12 4.51531e+00 1.87966e+00 112 2014 1 3.98078e+00 1.93520e+00 144 2014 2 2.64729e+00 2.05009e+00 160 2014 3 2.27960e+00 8.32094e-01 144 2014 4 3.73792e+00 2.03799e+00 112 2014 5 1.04892e+00 1.41019e+00 156 2014 6 5.26000e-01 6.67027e-01 123 2014 7 1.37050e+00 1.33078e+00 82 2014 8 3.22682e+00 2.57838e+00 160 2014 9 8.99372e+00 1.84401e+00 112 2014 10 5.90411e+00 2.39612e+00 311 2014 11 3.48152e+00 1.38672e+00 229 2014 12 3.72016e+00 9.94520e-01 176 2015 1 2.54754e+00 2.24880e+00 160 2015 2 2.87170e+00 1.16254e+00 208 2015 3 4.75747e+00 1.65522e+00 128 2015 4 5.21063e+00 3.14286e-01 64 2015 5 1.02032e+01 3.93587e+00 192 2015 6 7.45907e+00 3.50376e+00 160 2015 7 1.70729e+00 1.56790e+00 107 2015 8 4.77766e+00 2.03125e+00 194 2015 9 6.53734e+00 1.88750e+00 157 2015 10 4.42782e+00 3.06548e+00 167 2015 11 1.26700e+00 1.11418e+00 173 2015 12 3.45936e+00 1.09033e+00 115 2016 1 2.22195e+00 7.94534e-01 128 2016 2 2.81655e-01 4.30435e-01 269 2016 3 3.42578e-01 4.38918e-01 144 2016 4 5.85343e-01 8.53442e-01 144 2016 5 2.08719e+00 2.05084e+00 192 2016 6 2.50802e+00 3.72558e+00 74 2016 7 1.35453e-01 2.60972e-01 105 2016 8 4.59195e+00 1.58835e+00 182 2016 9 5.46559e+00 2.37512e+00 221 2016 10 5.90843e+00 2.14638e+00 289 2016 11 5.54267e+00 1.48844e+00 214 2016 12 4.76028e+00 1.24901e+00 176 2017 1 2.05827e+00 2.78466e+00 144 2017 2 9.95311e-01 6.90490e-01 256 2017 3 3.27484e+00 1.34766e+00 176 2017 4 3.16971e+00 1.68593e+00 160 2017 5 8.56034e-01 1.28556e+00 174 2017 6 3.13829e+00 1.10482e+00 96 2017 7 1.64975e-01 1.86554e-01 134 2017 8 2.49935e-01 4.17624e-01 96 2017 9 2.48418e+00 2.24174e+00 208 2017 10 2.96585e+00 2.11785e+00 224 2017 11 5.37613e+00 1.91257e+00 240 2017 12 2.97753e+00 1.89973e+00 137 2018 1 1.85792e+00 1.22926e+00 215 2018 2 6.29044e+00 2.95130e+00 115 2018 3 6.15134e+00 3.87007e+00 230 2018 4 5.45930e+00 2.51605e+00 257 2018 5 1.52190e+00 1.16763e+00 192 2018 6 1.67229e+00 1.48627e+00 112 2018 7 2.00791e+00 7.62366e-01 112 2018 8 2.13233e+00 1.20137e+00 119 2018 9 4.51292e+00 2.72184e+00 175 2018 10 3.18432e+00 3.92706e+00 256 2018 11 1.46936e+00 1.07003e+00 80 2018 12 8.50202e-01 5.19488e-01 106 2019 1 1.61056e-01 2.38831e-01 160 2019 2 6.11082e-01 9.63483e-01 52 2019 3 2.76091e+00 1.24825e+00 192 2019 4 3.28841e+00 1.50400e+00 146 2019 5 1.70910e+00 1.79140e+00 207 2019 6 6.55158e-02 7.38327e-02 127 2019 7 4.68481e-01 6.70608e-01 122 2019 8 6.78414e-01 7.89468e-01 122 2019 9 1.10479e+00 1.14798e+00 282 2019 10 3.08326e+00 1.39957e+00 160 2019 11 4.53993e+00 2.06265e+00 172 2019 12 3.22788e+00 1.19175e+00 176 2020 1 2.51365e+00 8.17282e-01 112 2020 2 2.21821e+00 1.53499e+00 160 2020 3 1.74572e+00 2.38791e+00 96 2020 4 3.14583e-01 3.43282e-01 128 2020 5 5.64342e-01 8.46316e-01 128 2020 6 1.13762e+01 2.09536e+00 112 2020 7 1.63677e+00 8.99977e-01 95 2020 8 1.09290e+00 1.31862e+00 81 2020 9 3.25288e+00 2.68793e+00 112 2020 10 2.43564e+00 2.41222e+00 160 2020 11 3.52027e+00 2.27569e+00 224 2020 12 3.21329e+00 8.56425e-01 224 2021 1 1.68806e+00 8.29353e-01 144 2021 2 7.92489e-01 6.08985e-01 96 2021 3 2.96014e+00 1.66461e+00 112 2021 4 1.15295e+01 5.55898e+00 176 2021 5 8.98287e+00 5.32185e+00 143 2021 6 2.94348e+00 2.06012e+00 80 2021 7 2.19256e-01 2.85021e-01 106 2021 8 1.34553e+00 1.57357e+00 96 2021 9 4.36556e+00 4.50123e+00 128 2021 10 2.06358e+00 7.90446e-01 144 2021 11 2.09340e+00 1.56461e+00 250 2021 12 3.58047e+00 6.79683e-01 93 2022 1 1.32757e+00 8.00316e-01 192 2022 2 2.83909e+00 1.42382e+00 178 2022 3 4.71412e+00 1.60693e+00 144 2022 4 3.90721e+00 2.32739e+00 64 2022 5 1.15626e+01 3.89888e+00 126 2022 6 6.68099e+00 3.71631e+00 160 2022 7 8.99567e+00 6.77266e+00 104 2022 8 9.92956e-01 4.57218e-01 127 2022 9 5.98326e+00 2.38379e+00 240 2022 10 4.97216e+00 1.11638e+00 289 2022 11 4.61866e+00 1.90259e+00 192 2022 12 4.26197e+00 1.15204e+00 124 2023 1 3.86879e+00 1.40639e+00 170 2023 2 3.01124e+00 1.06873e+00 193 2023 3 1.81800e+00 2.01400e+00 95 2023 4 6.46998e+00 1.93087e+00 32 2023 5 1.16661e+01 4.29599e+00 176 2023 6 8.64615e+00 3.57878e+00 80 2023 7 1.18702e+00 9.57022e-01 160 2023 8 2.65601e+00 1.25464e+00 192 2023 9 8.62606e-01 7.32537e-01 139 2023 10 2.74407e+00 1.33346e+00 197 2023 11 2.55304e+00 7.23369e-01 176 2023 12 2.68143e+00 1.08499e+00 144 2024 1 1.75157e+00 6.03312e-01 80 2024 2 9.19284e-01 7.94054e-01 109 2024 3 2.39992e+00 6.48298e-01 64 2024 4 2.51441e+00 2.43777e-01 32