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 -5.97846e-01 6.86225e-01 44 2002 8 2.20680e+00 1.90165e+00 64 2002 9 3.41844e+00 1.79937e+00 64 2002 10 2.94513e+00 1.78413e+00 127 2002 11 5.17290e+00 1.88238e+00 206 2002 12 4.43313e+00 1.21163e+00 172 2003 1 7.02360e+00 1.22552e+00 214 2003 2 6.05377e+00 1.09483e+00 148 2003 3 nan nan 0 2003 4 1.03164e+01 5.91240e-01 24 2003 5 3.65918e+00 5.87079e-02 16 2003 6 2.27338e-01 9.56463e-01 29 2003 7 nan nan 0 2003 8 nan nan 0 2003 9 9.65061e+00 2.41705e+00 65 2003 10 6.51422e+00 2.08720e+00 185 2003 11 9.00729e+00 1.80076e+00 159 2003 12 5.91186e+00 1.85975e+00 179 2004 1 5.95233e+00 2.33371e+00 120 2004 2 7.33518e+00 2.33676e+00 80 2004 3 7.55262e+00 1.94761e+00 72 2004 4 4.12705e+00 8.00901e-01 94 2004 5 3.29956e+00 5.23042e-01 67 2004 6 2.93803e+00 3.96944e-01 80 2004 7 2.74506e+00 1.10978e+00 97 2004 8 3.25795e+00 2.04455e+00 48 2004 9 4.17894e+00 4.10016e-01 23 2004 10 6.67658e+00 2.45935e+00 24 2004 11 1.12396e+01 1.40595e+00 58 2004 12 8.66537e+00 1.19133e+00 60 2005 1 8.83583e+00 2.28014e+00 135 2005 2 8.00219e+00 1.31848e+00 112 2005 3 7.23027e+00 1.79454e+00 128 2005 4 nan nan 0 2005 5 6.04624e+00 8.20548e-01 25 2005 6 6.70229e+00 2.23848e+00 61 2005 7 6.69945e+00 1.87933e+00 46 2005 8 8.89672e+00 3.97831e-01 16 2005 9 5.06691e+00 1.59888e+00 64 2005 10 4.89200e+00 1.14880e+00 216 2005 11 4.83462e+00 1.15848e+00 236 2005 12 5.60678e+00 1.17957e+00 207 2006 1 7.69191e+00 1.36444e+00 174 2006 2 8.76661e+00 1.47731e+00 157 2006 3 8.58735e+00 2.39037e+00 212 2006 4 5.33721e+00 9.18234e-01 136 2006 5 2.85354e+00 9.20097e-01 146 2006 6 2.94723e+00 2.83809e-01 52 2006 7 2.52796e+00 1.40072e+00 19 2006 8 1.76659e+00 1.41191e+00 72 2006 9 4.37860e+00 1.25321e+00 123 2006 10 3.76795e+00 1.12131e+00 150 2006 11 3.74149e+00 9.78754e-01 253 2006 12 4.12825e+00 1.32792e+00 133 2007 1 5.32992e+00 1.12503e+00 96 2007 2 4.55647e+00 1.50271e+00 221 2007 3 5.07991e+00 1.10546e+00 177 2007 4 3.55873e+00 1.74910e+00 98 2007 5 8.67121e-01 1.65778e+00 55 2007 6 1.22770e+00 2.05083e+00 48 2007 7 2.05856e+00 1.39946e+00 47 2007 8 1.27590e+00 2.30512e+00 45 2007 9 2.39646e+00 1.08015e+00 124 2007 10 3.98051e+00 1.04565e+00 107 2007 11 3.45199e+00 9.51295e-01 243 2007 12 3.97889e+00 1.70144e+00 112 2008 1 5.27470e+00 1.91981e+00 176 2008 2 4.09161e+00 1.09272e+00 258 2008 3 5.39272e+00 2.09341e+00 207 2008 4 2.93165e+00 1.56832e+00 101 2008 5 1.84210e+00 1.52364e+00 111 2008 6 -1.37349e-01 2.36994e+00 71 2008 7 9.56439e-01 8.59055e-01 32 2008 8 1.50320e+00 4.15046e-01 18 2008 9 6.43773e+00 1.27779e+00 44 2008 10 6.26431e+00 1.44470e+00 154 2008 11 4.47795e+00 1.12401e+00 195 2008 12 5.30903e+00 1.45035e+00 188 2009 1 5.68121e+00 1.35538e+00 175 2009 2 4.80560e+00 7.92158e-01 224 2009 3 3.76484e+00 1.01802e+00 147 2009 4 5.48692e+00 1.63241e+00 48 2009 5 3.65831e+00 0.00000e+00 1 2009 6 4.19654e+00 5.30501e-01 16 2009 7 1.37124e+00 2.18930e+00 64 2009 8 2.21138e+00 2.09849e+00 75 2009 9 2.92181e+00 1.58522e+00 95 2009 10 4.06294e+00 5.88671e-01 128 2009 11 3.61764e+00 1.04224e+00 104 2009 12 6.87397e+00 2.40051e+00 32 2010 1 9.92916e+00 2.46426e+00 149 2010 2 1.00510e+01 9.18797e-01 37 2010 3 1.03378e+01 1.88158e+00 147 2010 4 1.00136e+01 1.24422e+00 38 2010 5 6.31553e+00 1.98895e+00 46 2010 6 3.49599e+00 1.17993e+00 32 2010 7 1.43973e+00 1.24153e+00 44 2010 8 3.48371e+00 2.28051e-01 16 2010 9 3.26827e+00 1.97475e+00 103 2010 10 3.16509e+00 1.48333e+00 263 2010 11 3.51180e+00 9.00205e-01 282 2010 12 3.74019e+00 8.59125e-01 224 2011 1 3.45905e+00 7.00046e-01 176 2011 2 3.10409e+00 7.97508e-01 148 2011 3 4.61058e+00 1.64289e+00 183 2011 4 3.13038e+00 8.31255e-01 128 2011 5 1.47074e+00 1.23678e+00 97 2011 6 4.72065e-01 1.08785e+00 48 2011 7 7.96350e-01 1.26315e+00 75 2011 8 1.87182e+00 1.18550e+00 94 2011 9 2.22013e+00 1.52039e+00 128 2011 10 3.04216e+00 1.15183e+00 295 2011 11 3.67174e+00 9.96289e-01 212 2011 12 3.80063e+00 7.04434e-01 208 2012 1 3.44505e+00 9.11637e-01 260 2012 2 3.92420e+00 1.02761e+00 64 2012 3 3.86113e+00 1.86680e+00 193 2012 4 1.75832e+00 1.23743e+00 154 2012 5 1.13728e+00 1.28318e+00 89 2012 6 1.55285e+00 0.00000e+00 3 2012 7 6.22826e+00 0.00000e+00 2 2012 8 nan nan 0 2012 9 nan nan 0 2012 10 7.73672e+00 1.45236e-01 16 2012 11 4.51612e+00 1.08254e+00 216 2012 12 4.92909e+00 1.39916e+00 144 2013 1 5.08763e+00 1.82647e+00 112 2013 2 4.92169e+00 1.30375e+00 112 2013 3 5.89152e+00 1.87178e+00 87 2013 4 2.64207e+00 1.66999e-01 12 2013 5 -2.72196e+00 3.71015e-01 13 2013 6 2.20077e+00 7.37598e-02 16 2013 7 nan nan 0 2013 8 nan nan 0 2013 9 1.13593e+01 2.62649e-01 8 2013 10 6.67584e+00 1.15836e+00 80 2013 11 7.28268e+00 1.25666e+00 119 2013 12 6.43768e+00 1.53764e+00 160 2014 1 5.93736e+00 1.13492e+00 73 2014 2 8.08608e+00 2.13933e+00 132 2014 3 8.26767e+00 2.07907e+00 128 2014 4 1.12864e+01 6.85590e-01 13 2014 5 nan nan 0 2014 6 8.87483e+00 3.77225e+00 20 2014 7 4.51416e+00 1.00420e+00 94 2014 8 3.11289e+00 1.21373e+00 124 2014 9 4.36425e+00 6.16719e-01 97 2014 10 5.05622e+00 1.20734e+00 302 2014 11 4.29795e+00 1.27097e+00 211 2014 12 4.00278e+00 1.57660e+00 204 2015 1 7.80077e+00 2.58167e+00 127 2015 2 9.33033e+00 2.61349e+00 97 2015 3 9.44124e+00 1.62653e+00 41 2015 4 6.79264e+00 9.72925e-01 20 2015 5 6.41232e+00 1.45462e+00 69 2015 6 3.67136e+00 8.53727e-01 95 2015 7 3.58297e+00 1.39398e+00 32 2015 8 3.28626e+00 4.65468e-01 81 2015 9 4.85702e+00 5.58951e-01 96 2015 10 3.23132e+00 1.02588e+00 163 2015 11 3.92613e+00 7.99357e-01 143 2015 12 4.92563e+00 1.42384e+00 100 2016 1 6.06144e+00 1.96478e+00 201 2016 2 7.07479e+00 9.29682e-01 286 2016 3 6.65348e+00 1.00105e+00 161 2016 4 7.51273e+00 1.53120e+00 51 2016 5 2.42538e+00 3.19653e+00 53 2016 6 3.04508e+00 7.59540e-01 92 2016 7 3.49689e+00 1.03555e+00 138 2016 8 4.61021e+00 1.74553e+00 87 2016 9 5.48513e+00 2.14687e+00 130 2016 10 4.89614e+00 1.34624e+00 146 2016 11 3.33500e+00 1.16791e+00 160 2016 12 4.14948e+00 7.91262e-01 175 2017 1 4.64892e+00 1.38414e+00 163 2017 2 5.90115e+00 1.01661e+00 186 2017 3 4.39559e+00 7.69676e-01 192 2017 4 2.89297e+00 1.62563e+00 125 2017 5 2.61839e+00 5.64862e-01 76 2017 6 nan nan 0 2017 7 4.12377e+00 2.60450e-01 48 2017 8 2.95298e+00 2.23888e+00 72 2017 9 4.76789e+00 6.18249e-01 69 2017 10 4.93670e+00 1.14268e+00 234 2017 11 3.61279e+00 1.00138e+00 259 2017 12 3.07934e+00 7.68277e-01 176 2018 1 4.54290e+00 1.68751e+00 240 2018 2 3.92618e+00 5.92645e-01 128 2018 3 3.93731e+00 1.33110e+00 157 2018 4 2.68184e+00 1.21170e+00 82 2018 5 3.22010e+00 4.91390e-01 74 2018 6 3.00760e+00 1.84999e+00 42 2018 7 nan nan 0 2018 8 1.34422e+01 1.77395e-01 14 2018 9 8.26305e+00 1.18172e+00 106 2018 10 7.36871e+00 1.41334e+00 282 2018 11 5.68635e+00 1.46936e+00 76 2018 12 9.60057e+00 2.87553e+00 49 2019 1 1.24208e+01 2.62213e-01 5 2019 2 9.74782e+00 1.70373e+00 22 2019 3 8.77717e+00 1.66941e+00 63 2019 4 7.31659e+00 9.30231e-01 56 2019 5 2.38173e+00 1.89087e+00 121 2019 6 7.19068e-01 6.36634e-01 55 2019 7 1.40303e+00 1.47109e+00 36 2019 8 8.87691e-01 3.24226e+00 62 2019 9 5.32271e+00 2.06810e+00 65 2019 10 5.99300e+00 6.79770e-01 74 2019 11 4.54141e+00 1.54706e+00 143 2019 12 7.00739e+00 2.23793e+00 80 2020 1 4.92787e+00 1.10582e+00 160 2020 2 5.77276e+00 1.95252e+00 161 2020 3 3.85466e+00 9.56087e-01 166 2020 4 3.87936e+00 5.25797e-01 39 2020 5 1.42420e+00 1.31953e+00 93 2020 6 3.35131e+00 2.07777e+00 30 2020 7 3.83049e-01 2.85938e+00 30 2020 8 2.66403e+00 2.51539e+00 14 2020 9 2.32526e+00 3.01183e+00 38 2020 10 8.81664e+00 1.10309e+00 50 2020 11 6.55702e+00 2.13941e+00 80 2020 12 5.43066e+00 1.29166e+00 130 2021 1 7.54143e+00 1.67125e+00 51 2021 2 9.42186e+00 2.08992e+00 55 2021 3 1.14816e+01 5.03417e-01 10 2021 4 5.76983e+00 1.80313e+00 31 2021 5 1.10057e+00 3.42643e+00 26 2021 6 1.93931e+00 1.11074e+00 27 2021 7 nan nan 0 2021 8 9.24973e+00 3.70521e-01 16 2021 9 7.84240e+00 1.11884e-01 16 2021 10 8.96082e+00 3.08403e-01 24 2021 11 6.60608e+00 1.23694e+00 120 2021 12 4.91875e+00 8.30317e-01 115 2022 1 5.88432e+00 1.74434e+00 191 2022 2 3.81798e+00 1.06887e+00 145 2022 3 3.91946e+00 9.92367e-01 96 2022 4 nan nan 0 2022 5 -1.20564e+00 5.63680e-01 19 2022 6 -8.69264e-01 1.62599e+00 31 2022 7 -6.67760e-01 2.26263e+00 49 2022 8 1.13455e+00 2.90296e+00 100 2022 9 4.87558e+00 1.37237e+00 29 2022 10 3.49630e+00 1.64478e+00 181 2022 11 3.35209e+00 1.32513e+00 90 2022 12 3.73381e+00 1.09562e+00 160 2023 1 3.89662e+00 7.36655e-01 208 2023 2 4.57029e+00 1.05930e+00 137 2023 3 nan nan 0 2023 4 nan nan 0 2023 5 3.14167e+00 2.18722e+00 48 2023 6 -1.19096e+00 1.81689e+00 64 2023 7 1.06774e+00 4.22098e-01 16 2023 8 2.57528e-01 1.98919e+00 51 2023 9 nan nan 0 2023 10 5.73003e+00 2.37701e+00 63 2023 11 3.90154e+00 2.07876e+00 117 2023 12 6.51893e+00 2.28892e-01 16 2024 1 nan nan 0 2024 2 9.99855e+00 1.95594e+00 102 2024 3 8.81219e+00 7.76295e-01 68 2024 4 nan nan 0