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 1.04943e+01 1.75524e+00 24 2002 8 8.01985e+00 4.02584e+00 48 2002 9 4.96468e+00 4.42373e+00 89 2002 10 4.29529e+00 1.66440e+00 96 2002 11 2.66397e+00 1.78844e+00 144 2002 12 5.74795e+00 2.55122e+00 128 2003 1 5.46202e+00 3.88581e+00 112 2003 2 9.86717e+00 3.49922e+00 128 2003 3 5.13906e-02 4.11850e-02 26 2003 4 2.31105e+00 1.92227e+00 98 2003 5 3.71808e+00 9.57652e-01 32 2003 6 4.27177e+00 5.29534e-01 32 2003 7 1.45175e+01 2.48962e+01 48 2003 8 6.56295e+00 7.50116e+00 47 2003 9 3.73719e+00 2.31763e+00 112 2003 10 9.82983e+00 3.64671e+00 152 2003 11 8.79993e+00 4.52747e+00 176 2003 12 1.09604e+01 4.68084e+00 164 2004 1 1.79646e+01 4.65254e+00 131 2004 2 3.77417e+00 1.63973e+00 32 2004 3 9.24242e+00 5.06627e+00 160 2004 4 1.42750e+01 5.29599e+00 136 2004 5 1.93439e+01 3.50585e+00 112 2004 6 1.97468e+01 4.99786e-01 16 2004 7 9.02193e+00 2.38568e+00 60 2004 8 9.13759e+00 4.97798e+00 50 2004 9 1.00651e+01 7.26733e+00 46 2004 10 3.44650e+00 2.26747e+00 78 2004 11 6.99433e+00 4.04939e+00 144 2004 12 1.56217e+00 1.14265e+00 49 2005 1 6.08463e+00 1.80937e+00 136 2005 2 1.13554e+01 3.41138e+00 140 2005 3 3.20409e+00 1.29435e+00 144 2005 4 5.88419e-01 9.36041e-02 16 2005 5 8.01770e+00 3.95911e+00 91 2005 6 8.23779e+00 4.91247e+00 40 2005 7 2.31315e+00 1.06752e+00 74 2005 8 8.01657e-01 4.55093e-02 11 2005 9 1.60961e+01 8.23162e+00 58 2005 10 1.38705e+01 3.98135e+00 255 2005 11 1.76695e+01 4.80905e+00 193 2005 12 8.61784e+00 2.39437e+00 120 2006 1 5.96074e+00 2.41895e+00 74 2006 2 6.02837e+00 2.21291e+00 141 2006 3 6.29924e+00 2.70788e+00 160 2006 4 1.47243e+01 5.11194e+00 127 2006 5 1.70847e+01 5.54790e+00 128 2006 6 1.92130e+01 1.30125e+00 16 2006 7 1.69076e+01 6.43196e-01 32 2006 8 1.42740e+01 2.63718e+00 75 2006 9 9.24339e+00 2.89656e+00 132 2006 10 1.10953e+01 5.37005e+00 203 2006 11 1.25291e+01 7.13390e+00 208 2006 12 1.22342e+01 9.67609e+00 128 2007 1 3.47517e+00 2.16019e+00 78 2007 2 4.36230e+00 3.55783e+00 153 2007 3 1.08402e+01 4.38042e+00 244 2007 4 1.17760e+01 3.99323e+00 157 2007 5 9.02065e+00 5.32791e+00 64 2007 6 1.31231e+01 8.68746e+00 25 2007 7 1.37902e+01 2.63025e+00 94 2007 8 1.10809e+01 9.79668e-01 48 2007 9 2.60316e+00 1.15847e+00 48 2007 10 7.14190e+00 5.18429e+00 126 2007 11 1.29690e+01 4.11450e+00 240 2007 12 1.66077e+01 2.72871e+00 96 2008 1 1.21254e+01 5.34401e+00 112 2008 2 6.05121e+00 4.29004e+00 193 2008 3 2.70501e+00 2.60540e+00 72 2008 4 4.50164e+00 2.18760e+00 85 2008 5 1.17446e+01 3.52258e+00 96 2008 6 1.38204e+01 3.47963e+00 138 2008 7 1.58611e+01 1.26738e+00 47 2008 8 1.55522e+01 9.10828e-01 16 2008 9 9.24890e+00 1.13166e+01 150 2008 10 7.79514e+00 4.39782e+00 256 2008 11 1.03916e+01 5.21657e+00 239 2008 12 7.05470e+00 6.29518e+00 140 2009 1 4.55591e+00 2.75240e+00 127 2009 2 1.16314e+01 4.81204e+00 206 2009 3 8.85629e+00 3.98997e+00 99 2009 4 1.25466e+00 8.60336e-01 24 2009 5 6.23290e+00 1.43701e+00 64 2009 6 6.36891e+00 2.56382e+00 32 2009 7 1.80690e+01 6.57028e-01 22 2009 8 5.83686e+00 2.69659e+00 57 2009 9 1.46690e+01 1.90335e+01 70 2009 10 3.66527e+00 1.97493e+00 179 2009 11 2.87065e+00 2.06338e+00 142 2009 12 1.69150e-01 3.45528e-02 16 2010 1 4.32882e-01 1.80543e-02 11 2010 2 5.86362e-01 2.01127e-01 48 2010 3 1.89333e+00 1.02446e+00 112 2010 4 4.86466e+00 3.56481e+00 129 2010 5 6.67804e+00 1.37995e+00 48 2010 6 9.52566e+00 3.50244e+00 96 2010 7 1.19004e+01 1.02623e+00 49 2010 8 2.72000e+00 3.43906e-01 8 2010 9 9.64805e+00 3.28856e+00 144 2010 10 1.18936e+01 3.63524e+00 310 2010 11 1.38492e+01 5.00485e+00 272 2010 12 1.41231e+01 5.84868e+00 160 2011 1 1.04274e+01 4.15315e+00 174 2011 2 6.01833e+00 2.44354e+00 131 2011 3 7.39609e+00 2.87175e+00 159 2011 4 7.26321e+00 2.76804e+00 128 2011 5 1.53834e+01 2.30587e+00 80 2011 6 1.23226e+01 2.97457e+00 104 2011 7 1.41483e+01 2.13692e+00 48 2011 8 8.74641e+00 4.16217e+00 86 2011 9 1.22209e+01 1.88979e+00 153 2011 10 1.22072e+01 5.12340e+00 182 2011 11 8.25760e+00 5.40543e+00 128 2011 12 1.12812e+01 4.57403e+00 183 2012 1 1.13441e+01 5.78294e+00 187 2012 2 6.22711e+00 3.62393e+00 59 2012 3 6.76254e+00 4.53629e+00 150 2012 4 1.21391e+01 4.83771e+00 189 2012 5 1.49254e+01 3.44869e+00 111 2012 6 1.21183e+01 4.67940e-01 16 2012 7 2.62937e+00 1.36311e+00 76 2012 8 3.17731e+00 4.99369e+00 30 2012 9 2.47240e+00 1.19082e+00 71 2012 10 3.46312e+00 1.49403e+00 176 2012 11 1.58479e+01 5.99885e+00 197 2012 12 1.94613e+01 8.71825e+00 100 2013 1 1.68662e+01 6.03541e+00 88 2013 2 1.19775e+01 4.27793e+00 89 2013 3 1.05188e+00 8.63765e-01 64 2013 4 7.85445e-01 6.76258e-01 24 2013 5 7.41144e+00 3.31236e+00 63 2013 6 9.43228e+00 5.37654e-01 32 2013 7 1.64629e+01 2.47391e+01 22 2013 8 7.79094e-01 4.14963e-01 41 2013 9 9.40122e+00 1.39094e+01 128 2013 10 5.64865e+00 2.99918e+00 168 2013 11 1.03279e+01 3.46648e+00 82 2013 12 5.81821e+00 3.25034e+00 107 2014 1 1.52708e+00 6.60447e-01 69 2014 2 4.85788e+00 2.77392e+00 121 2014 3 8.84865e-01 4.49488e-01 33 2014 4 1.21566e+00 4.73840e-01 48 2014 5 3.29332e+00 2.33786e+00 94 2014 6 1.05977e+01 4.31083e+00 52 2014 7 1.29569e+01 2.43165e+00 57 2014 8 1.38955e+01 4.48524e+00 63 2014 9 9.32026e+00 3.78450e+00 144 2014 10 9.17764e+00 3.83990e+00 272 2014 11 1.01208e+01 6.21475e+00 150 2014 12 6.49330e+00 4.31506e+00 144 2015 1 1.58294e+00 8.51540e-01 95 2015 2 3.29802e+00 2.58208e+00 94 2015 3 5.04237e+00 1.30405e+00 121 2015 4 8.95961e+00 8.32181e-01 25 2015 5 5.01948e+00 3.27202e+00 135 2015 6 9.11988e+00 4.12347e+00 59 2015 7 8.72901e+00 3.35801e+00 44 2015 8 6.50514e+00 4.86177e+00 32 2015 9 7.88683e+00 3.03205e+00 99 2015 10 7.98554e+00 2.61352e+00 145 2015 11 4.60555e+00 6.56580e+00 128 2015 12 2.63775e+00 1.72681e+00 137 2016 1 9.62482e-02 2.11660e-02 12 2016 2 7.43684e-01 2.87506e-01 59 2016 3 2.35582e+00 1.07513e+00 44 2016 4 3.57571e-01 3.31134e-01 39 2016 5 1.11020e+01 4.67176e+00 112 2016 6 1.35927e+01 2.65004e+00 112 2016 7 1.15935e+01 3.48757e+00 160 2016 8 3.77769e+00 1.88216e+00 120 2016 9 3.65102e+00 1.87176e+00 99 2016 10 7.40867e+00 4.60092e+00 272 2016 11 1.80726e+01 4.95177e+00 188 2016 12 1.19299e+01 4.30386e+00 113 2017 1 2.40239e+00 1.09465e+00 27 2017 2 3.07615e+00 2.66443e+00 101 2017 3 7.99370e+00 5.84705e+00 168 2017 4 8.76885e+00 5.24858e+00 100 2017 5 1.51094e+01 7.48854e+00 79 2017 6 6.95882e+00 7.73728e+00 44 2017 7 3.62473e+00 2.00327e+00 53 2017 8 8.02197e+00 7.35309e+00 48 2017 9 6.64027e+00 2.87393e+00 104 2017 10 7.04317e+00 4.45814e+00 193 2017 11 1.37786e+01 4.50345e+00 236 2017 12 1.58587e+01 2.15198e+00 111 2018 1 1.30644e+01 5.71342e+00 201 2018 2 8.26966e+00 8.31893e+00 80 2018 3 7.82430e+00 4.19419e+00 176 2018 4 1.21021e+01 2.27014e+00 135 2018 5 9.73435e+00 3.34980e+00 91 2018 6 6.02447e+00 1.80613e+00 49 2018 7 1.05947e+01 3.11649e+00 78 2018 8 4.36922e+00 1.15834e+00 16 2018 9 1.03737e+01 1.13689e+01 168 2018 10 2.86193e+00 4.79838e+00 228 2018 11 3.99160e+00 2.72895e+00 84 2018 12 1.44273e+00 6.53561e-01 20 2019 1 1.02427e+00 2.72434e-02 11 2019 2 4.26919e-01 2.47765e-01 48 2019 3 3.97315e+00 2.25809e+00 171 2019 4 6.04045e+00 2.08733e+00 73 2019 5 1.02204e+01 4.11630e+00 140 2019 6 1.21219e+01 4.33604e+00 85 2019 7 8.04757e+00 2.87815e+00 70 2019 8 1.09400e+01 6.79027e+00 129 2019 9 7.43362e+00 5.15954e+00 217 2019 10 9.15200e+00 4.10799e+00 144 2019 11 1.42098e+01 6.74044e+00 153 2019 12 1.03601e+01 7.30460e+00 53 2020 1 1.31340e+00 5.59989e-01 48 2020 2 2.92790e+00 6.39451e-01 34 2020 3 8.98869e-01 7.89773e-01 50 2020 4 3.45279e+00 1.80230e+00 34 2020 5 6.34190e+00 3.76153e+00 36 2020 6 4.68588e+00 2.21904e+00 80 2020 7 7.46003e-01 5.13655e-02 16 2020 8 1.40172e+01 8.51164e-01 34 2020 9 8.45474e+00 1.22686e+01 63 2020 10 2.40232e+00 1.13605e+00 112 2020 11 6.44586e+00 5.07946e+00 186 2020 12 7.18237e+00 4.46402e+00 243 2021 1 1.97912e+00 1.05729e+00 71 2021 2 nan nan 0 2021 3 2.27851e+00 2.21625e+00 73 2021 4 4.59974e+00 3.02253e+00 145 2021 5 8.28284e+00 5.97090e+00 92 2021 6 1.39851e+01 6.31130e+00 32 2021 7 2.47074e+00 1.49592e+00 64 2021 8 3.72477e+00 3.10140e+00 89 2021 9 1.31339e+00 2.11372e+00 83 2021 10 1.42291e+00 6.76520e-01 107 2021 11 9.84249e+00 3.57118e+00 210 2021 12 9.27077e+00 4.03724e+00 117 2022 1 4.08708e+00 2.44455e+00 64 2022 2 4.92845e+00 2.36625e+00 76 2022 3 4.44895e+00 3.37451e+00 144 2022 4 2.54510e+00 1.49925e+00 32 2022 5 7.63115e+00 4.76178e+00 44 2022 6 1.17339e+01 4.07324e+00 119 2022 7 1.22293e+01 3.57979e+00 112 2022 8 8.38785e+00 2.58505e+00 74 2022 9 3.09372e+00 2.42514e+00 99 2022 10 9.23343e+00 3.75741e+00 302 2022 11 1.08078e+01 5.99341e+00 147 2022 12 1.09865e+01 6.17961e+00 179 2023 1 1.10965e+01 3.25107e+00 143 2023 2 2.71365e+00 2.24266e+00 81 2023 3 5.83578e+00 1.66038e+00 112 2023 4 4.61680e+00 2.75773e+00 64 2023 5 1.65982e+01 3.40089e+00 48 2023 6 6.35842e+00 2.80320e+00 55 2023 7 7.06532e+00 1.30891e+00 32 2023 8 1.10541e+01 3.02380e+00 57 2023 9 5.24445e+00 2.85287e+00 128 2023 10 6.22042e+00 3.80577e+00 195 2023 11 1.47759e+01 5.13779e+00 120 2023 12 4.99984e+00 3.74045e+00 58 2024 1 1.60661e+00 1.16689e+00 62 2024 2 2.48515e+00 1.97867e+00 43 2024 3 2.33094e+00 5.74592e-01 36 2024 4 nan nan 0