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 9.80166e-01 1.50795e-01 22 2002 8 3.09506e+00 3.15165e-01 44 2002 9 9.14964e+00 4.82633e+00 46 2002 10 6.94529e+00 1.76097e+00 60 2002 11 8.16592e+00 9.11808e-01 101 2002 12 5.78213e+00 1.65648e+00 133 2003 1 6.68774e+00 1.44369e+00 176 2003 2 3.17000e+00 5.67796e-01 154 2003 3 9.88852e+00 6.47923e-01 64 2003 4 7.35945e+00 1.05940e+00 64 2003 5 nan nan 0 2003 6 5.41732e+00 7.99483e-02 16 2003 7 1.15149e+01 1.87392e-01 14 2003 8 1.01672e+01 1.35345e+00 37 2003 9 6.10170e+00 1.41485e+00 64 2003 10 3.84862e+00 1.02149e+00 160 2003 11 3.52558e+00 6.88517e-01 215 2003 12 4.12090e+00 3.82492e-01 162 2004 1 4.07364e+00 6.81278e-01 88 2004 2 6.29838e+00 1.75961e+00 64 2004 3 4.42781e+00 1.38137e+00 160 2004 4 2.42322e+00 1.15241e+00 46 2004 5 2.47350e+00 8.12752e-01 57 2004 6 3.91870e+00 3.02637e-01 16 2004 7 8.58439e+00 6.25414e-01 19 2004 8 4.76086e+00 2.95114e-01 32 2004 9 8.03575e+00 3.13592e+00 97 2004 10 6.46867e+00 1.26012e+00 80 2004 11 8.16754e+00 5.20510e-01 129 2004 12 8.32810e+00 5.95931e-01 126 2005 1 6.74157e+00 1.31584e+00 115 2005 2 4.81345e+00 8.22640e-01 94 2005 3 3.89478e+00 7.93566e-01 134 2005 4 1.27027e+01 1.46897e-01 32 2005 5 8.90714e+00 1.04543e+00 34 2005 6 6.56862e+00 1.47631e+00 48 2005 7 9.39145e+00 1.20038e+00 41 2005 8 nan nan 0 2005 9 6.21427e+00 9.79878e-01 48 2005 10 3.75264e+00 1.01569e+00 202 2005 11 3.63951e+00 7.50404e-01 133 2005 12 4.41497e+00 3.70606e-01 129 2006 1 4.77600e+00 7.04265e-01 114 2006 2 4.26360e+00 8.42626e-01 152 2006 3 3.98590e+00 9.65137e-01 198 2006 4 2.41459e+00 6.77553e-01 54 2006 5 2.84918e+00 5.47642e-01 58 2006 6 2.19468e+00 1.30319e+00 40 2006 7 1.98849e+00 1.14563e-01 23 2006 8 3.28384e+00 8.45163e-01 28 2006 9 3.59171e+00 2.97887e-01 117 2006 10 3.47547e+00 7.68849e-01 160 2006 11 4.15031e+00 1.22026e+00 212 2006 12 3.24548e+00 9.10096e-01 143 2007 1 4.54916e+00 6.94015e-01 80 2007 2 3.54830e+00 4.14357e-01 106 2007 3 2.62989e+00 1.06114e+00 131 2007 4 5.17058e+00 2.98510e+00 63 2007 5 2.65046e+00 1.52796e-02 16 2007 6 2.07145e+00 8.68238e-01 4 2007 7 2.87152e+00 1.15735e-01 32 2007 8 4.19536e+00 4.79733e-02 16 2007 9 1.78440e+00 1.03397e+00 66 2007 10 4.50288e+00 3.02636e+00 111 2007 11 4.75813e+00 1.41394e+00 141 2007 12 5.29465e+00 8.70644e-01 93 2008 1 6.99659e+00 9.52751e-01 81 2008 2 8.29196e+00 1.38812e+00 108 2008 3 7.25783e+00 9.28900e-01 125 2008 4 7.19858e+00 4.36931e-01 32 2008 5 3.65978e+00 9.07397e-01 22 2008 6 2.40291e+00 8.90735e-01 51 2008 7 2.59628e+00 8.58691e-01 30 2008 8 2.72561e+00 1.66468e+00 71 2008 9 7.05469e+00 3.95166e+00 80 2008 10 3.07468e+00 9.83920e-01 171 2008 11 3.15171e+00 9.58944e-01 247 2008 12 6.10904e+00 1.87866e+00 84 2009 1 6.03498e+00 1.21405e+00 114 2009 2 4.33167e+00 5.45343e-01 128 2009 3 4.06901e+00 1.44856e+00 40 2009 4 1.12821e+01 3.10595e+00 31 2009 5 6.13867e+00 2.87498e-02 16 2009 6 8.44609e+00 7.45418e-02 16 2009 7 nan nan 0 2009 8 nan nan 0 2009 9 1.06500e+01 7.35531e-01 33 2009 10 7.42435e+00 5.54494e-01 93 2009 11 7.77772e+00 2.54790e+00 116 2009 12 8.25033e+00 1.04556e+00 48 2010 1 8.96124e+00 1.87864e+00 124 2010 2 1.02371e+01 6.45481e-01 97 2010 3 7.49028e+00 6.69888e-01 96 2010 4 4.30206e+00 5.61489e-01 64 2010 5 4.86791e+00 1.06990e+00 72 2010 6 5.41989e+00 7.97632e-01 61 2010 7 4.33661e+00 4.94815e-01 25 2010 8 nan nan 0 2010 9 3.70637e+00 8.20785e-01 120 2010 10 2.52897e+00 5.83731e-01 237 2010 11 3.25728e+00 4.68096e-01 121 2010 12 3.70561e+00 5.12999e-01 208 2011 1 3.67383e+00 5.13143e-01 201 2011 2 4.95355e+00 7.52053e-01 157 2011 3 6.05341e+00 2.20150e+00 123 2011 4 4.58985e+00 3.95687e-01 59 2011 5 1.95076e+00 7.38773e-01 69 2011 6 2.01354e+00 3.43165e-01 48 2011 7 4.04537e+00 1.01979e+00 58 2011 8 4.35507e+00 6.80145e-01 77 2011 9 4.44082e+00 6.27742e-01 49 2011 10 2.66096e+00 9.86132e-01 204 2011 11 2.61502e+00 5.92945e-01 130 2011 12 2.67076e+00 5.11853e-01 96 2012 1 3.84796e+00 9.29114e-01 163 2012 2 4.06516e+00 9.56872e-01 33 2012 3 5.40089e+00 2.02492e+00 48 2012 4 2.94081e+00 6.53177e-01 57 2012 5 1.27411e+00 4.25071e-01 35 2012 6 3.48571e+00 7.18706e-01 25 2012 7 2.85202e+00 1.03654e-01 25 2012 8 4.80360e+00 1.45981e+00 26 2012 9 5.34453e+00 1.10601e+00 71 2012 10 3.84270e+00 8.46762e-01 150 2012 11 2.73824e+00 5.45286e-01 215 2012 12 2.94039e+00 1.07080e+00 112 2013 1 4.16315e+00 9.25693e-01 82 2013 2 5.60844e+00 1.98776e+00 103 2013 3 8.11158e+00 2.78770e+00 132 2013 4 4.48382e+00 1.12772e+00 47 2013 5 3.20564e+00 1.30813e+00 19 2013 6 4.20439e+00 6.79648e-02 16 2013 7 nan nan 0 2013 8 1.08655e+01 1.88769e+00 34 2013 9 8.36993e+00 1.13903e+00 84 2013 10 5.15889e+00 2.17514e+00 124 2013 11 3.79212e+00 1.14071e+00 175 2013 12 4.57902e+00 4.75176e-01 96 2014 1 5.98050e+00 4.10547e-01 113 2014 2 5.15342e+00 1.46535e+00 105 2014 3 6.83081e+00 3.23843e-01 96 2014 4 1.02392e+01 1.64976e+00 47 2014 5 1.19978e+01 2.76362e-01 10 2014 6 9.55044e+00 3.51705e-01 27 2014 7 7.35024e+00 2.15675e+00 34 2014 8 4.51332e+00 1.03132e-01 7 2014 9 3.42485e+00 8.38947e-01 60 2014 10 2.96661e+00 8.27073e-01 207 2014 11 3.91391e+00 9.67604e-01 208 2014 12 2.82809e+00 4.23948e-01 129 2015 1 4.52868e+00 1.13560e+00 180 2015 2 4.46731e+00 6.97214e-01 160 2015 3 3.68697e+00 5.75746e-01 49 2015 4 7.25148e+00 1.96411e+00 5 2015 5 5.10947e+00 2.66377e+00 34 2015 6 3.21210e+00 1.25635e-01 16 2015 7 3.36430e+00 3.28920e-01 44 2015 8 2.58376e+00 6.05338e-01 80 2015 9 1.54410e+00 1.35619e+00 88 2015 10 4.36670e+00 1.19155e+00 148 2015 11 8.87140e+00 1.73549e+00 61 2015 12 4.70357e+00 1.88685e-01 62 2016 1 9.46000e+00 6.26698e-01 80 2016 2 8.80133e+00 7.20772e-01 181 2016 3 7.72933e+00 1.35835e+00 108 2016 4 8.95437e+00 1.10349e+00 44 2016 5 4.36217e+00 1.09210e+00 19 2016 6 2.66657e+00 1.30454e+00 68 2016 7 2.81141e+00 4.98391e-01 56 2016 8 6.92333e+00 8.97134e-01 56 2016 9 2.61010e+00 1.45110e+00 91 2016 10 1.78173e+00 1.24762e+00 230 2016 11 2.50297e+00 1.27001e+00 179 2016 12 4.39183e+00 8.97915e-01 95 2017 1 9.67208e+00 1.38310e+00 124 2017 2 7.81099e+00 1.70616e+00 165 2017 3 5.30346e+00 1.50711e+00 110 2017 4 4.31176e+00 8.99465e-01 74 2017 5 2.87984e+00 1.09017e+00 81 2017 6 5.99544e+00 3.60535e-01 21 2017 7 1.15522e+01 2.35475e+00 44 2017 8 6.90477e+00 2.29509e-01 20 2017 9 4.59434e+00 1.69407e+00 96 2017 10 6.40422e+00 1.91378e+00 121 2017 11 5.22187e+00 2.09234e+00 142 2017 12 3.48699e+00 5.55346e-01 143 2018 1 3.84866e+00 9.61388e-01 187 2018 2 6.78918e+00 3.13437e+00 45 2018 3 5.80764e+00 1.26650e+00 84 2018 4 3.77939e+00 1.74458e-01 45 2018 5 1.94305e+00 3.96129e-01 46 2018 6 7.10559e+00 1.83549e-01 16 2018 7 4.96284e+00 1.21454e+00 21 2018 8 5.27615e+00 6.27789e-01 45 2018 9 7.85125e+00 2.23534e+00 103 2018 10 4.96195e+00 1.22251e+00 149 2018 11 6.07012e+00 2.03401e+00 69 2018 12 7.94861e+00 5.24012e-01 71 2019 1 1.00254e+01 1.89263e+00 120 2019 2 5.48608e+00 1.78190e+00 40 2019 3 4.01519e+00 7.39479e-01 61 2019 4 5.39461e+00 1.42658e+00 100 2019 5 5.37616e+00 1.72899e+00 98 2019 6 5.05199e+00 0.00000e+00 1 2019 7 1.98298e+00 3.34160e-02 16 2019 8 2.55722e+00 1.36558e+00 33 2019 9 2.40006e+00 1.15018e+00 129 2019 10 2.59108e+00 4.21558e-01 112 2019 11 3.30293e+00 9.08003e-01 96 2019 12 4.48031e+00 1.62138e+00 80 2020 1 8.12411e+00 2.57041e+00 69 2020 2 7.55602e+00 5.19397e-01 112 2020 3 6.39334e+00 8.35362e-01 80 2020 4 3.94499e+00 9.84359e-01 50 2020 5 4.15994e+00 1.49832e+00 56 2020 6 3.62694e+00 1.08064e+00 44 2020 7 3.10950e+00 2.07159e-01 48 2020 8 3.08673e+00 1.23953e+00 48 2020 9 6.72403e+00 3.09274e+00 22 2020 10 7.54664e+00 1.54940e+00 133 2020 11 4.19291e+00 8.48347e-01 158 2020 12 4.23030e+00 6.78786e-01 160 2021 1 4.67996e+00 8.09390e-01 95 2021 2 5.50274e+00 8.54377e-01 115 2021 3 5.00508e+00 4.13788e-01 93 2021 4 7.57472e+00 1.40463e+00 112 2021 5 5.03233e+00 1.05683e+00 31 2021 6 3.47258e+00 7.96482e-02 6 2021 7 1.07894e+01 1.35200e+00 18 2021 8 5.53959e+00 6.18020e-01 32 2021 9 8.53085e+00 1.39551e+00 30 2021 10 1.12678e+01 1.08273e+00 41 2021 11 4.12854e+00 7.20654e-01 191 2021 12 4.41089e+00 1.33834e+00 64 2022 1 4.68671e+00 5.17229e-01 163 2022 2 5.61315e+00 1.97130e+00 114 2022 3 5.06827e+00 2.47536e+00 150 2022 4 6.88042e+00 1.87622e+00 30 2022 5 6.23498e+00 5.25162e-01 33 2022 6 2.98225e+00 7.82995e-01 45 2022 7 4.79940e+00 9.20026e-01 66 2022 8 7.21797e+00 1.54491e+00 67 2022 9 5.22429e+00 1.63367e+00 170 2022 10 3.02634e+00 7.03226e-01 233 2022 11 2.88213e+00 6.30795e-01 121 2022 12 4.33685e+00 1.16256e+00 115 2023 1 5.82540e+00 1.35830e+00 182 2023 2 6.17483e+00 1.44414e+00 147 2023 3 4.87477e+00 1.21475e+00 36 2023 4 5.15397e+00 1.03792e+00 32 2023 5 2.01774e+00 5.79824e-01 48 2023 6 4.94707e+00 2.71656e+00 42 2023 7 5.92220e+00 2.56022e-01 80 2023 8 2.99403e+00 6.79158e-01 84 2023 9 2.58227e+00 1.27277e+00 63 2023 10 1.92295e+00 1.12197e+00 157 2023 11 2.70635e+00 5.65871e-01 142 2023 12 3.09616e+00 7.07071e-01 80 2024 1 3.83291e+00 5.78028e-01 65 2024 2 5.60469e+00 9.33150e-01 62 2024 3 6.40510e+00 7.21127e-01 29 2024 4 5.71689e+00 0.00000e+00 1