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 1.21277e+01 1.42692e+00 144 2002 8 7.31469e+00 1.55600e+00 85 2002 9 4.62909e+00 3.80870e+00 96 2002 10 5.01628e+00 3.62370e+00 128 2002 11 3.01479e+00 1.51310e+00 176 2002 12 2.13950e+00 1.90145e+00 180 2003 1 9.77243e-01 1.32814e+00 240 2003 2 1.63473e+00 3.91858e-01 144 2003 3 2.00165e+00 2.55126e+00 153 2003 4 1.50882e+00 1.87590e+00 144 2003 5 3.64935e+00 9.70994e-01 64 2003 6 3.24690e-01 2.44958e-01 57 2003 7 1.45957e+00 9.66278e-01 88 2003 8 1.56470e+00 1.12949e+00 80 2003 9 3.87242e+00 1.59667e+00 166 2003 10 4.63042e+00 1.68396e+00 240 2003 11 6.84291e+00 2.22852e+00 256 2003 12 2.26690e+00 1.66988e+00 192 2004 1 3.50899e+00 1.44755e+00 113 2004 2 3.14507e+00 1.64392e+00 48 2004 3 2.87634e+00 1.32211e+00 224 2004 4 3.57805e+00 1.69603e+00 176 2004 5 1.12894e+01 5.11635e+00 176 2004 6 1.62297e+00 8.86318e-01 64 2004 7 8.87144e-01 6.32486e-01 66 2004 8 2.20193e+00 1.61196e+00 128 2004 9 2.83469e+00 2.50887e+00 176 2004 10 2.77738e+00 2.13718e+00 96 2004 11 1.99178e+00 1.15731e+00 128 2004 12 1.31524e+00 7.18660e-01 164 2005 1 2.24942e+00 7.99787e-01 140 2005 2 2.91527e+00 1.64491e+00 96 2005 3 3.10917e+00 2.37610e+00 176 2005 4 1.74840e+00 2.15134e+00 136 2005 5 2.78340e+00 1.76665e+00 144 2005 6 4.85392e+00 4.74227e+00 151 2005 7 3.98835e+00 3.21467e+00 160 2005 8 7.57207e+00 4.60577e+00 96 2005 9 3.98374e+00 1.96140e+00 194 2005 10 4.80018e+00 2.38796e+00 320 2005 11 3.14077e+00 2.21323e+00 199 2005 12 2.88145e+00 1.28092e+00 144 2006 1 1.94496e+00 1.16170e+00 160 2006 2 2.26381e+00 1.13248e+00 178 2006 3 5.87166e+00 2.14196e+00 239 2006 4 8.39140e+00 2.57089e+00 184 2006 5 4.79821e+00 2.98977e+00 176 2006 6 4.45399e+00 3.21105e+00 175 2006 7 1.01524e+01 2.29756e+00 80 2006 8 8.58181e+00 2.36279e+00 96 2006 9 6.27313e+00 1.59765e+00 176 2006 10 5.94503e+00 2.76209e+00 236 2006 11 3.14678e+00 1.76869e+00 256 2006 12 3.65417e+00 1.33224e+00 181 2007 1 2.18663e+00 7.49483e-01 80 2007 2 2.32251e+00 1.25260e+00 102 2007 3 3.96445e+00 1.71737e+00 224 2007 4 7.97115e+00 1.90848e+00 149 2007 5 8.97134e+00 2.73936e+00 86 2007 6 8.53418e+00 3.02505e+00 96 2007 7 5.46285e+00 5.01387e+00 81 2007 8 9.76179e+00 1.56245e+00 101 2007 9 5.52390e+00 3.84715e+00 130 2007 10 3.63966e+00 2.01553e+00 196 2007 11 3.53270e+00 1.36255e+00 240 2007 12 3.49366e+00 1.09374e+00 139 2008 1 2.27839e+00 6.26234e-01 96 2008 2 2.48357e+00 1.47509e+00 236 2008 3 2.21644e+00 1.66204e+00 191 2008 4 4.52988e+00 2.96244e+00 144 2008 5 2.99551e+00 2.40652e+00 135 2008 6 8.28639e-01 8.85990e-01 156 2008 7 9.30479e-01 8.59346e-01 80 2008 8 2.57579e+00 1.02035e+00 80 2008 9 5.03484e+00 3.39526e+00 208 2008 10 4.14810e+00 2.30875e+00 208 2008 11 4.53098e+00 1.35900e+00 315 2008 12 3.06295e+00 6.07265e-01 98 2009 1 1.26962e+00 7.62519e-01 164 2009 2 1.50026e+00 9.86003e-01 129 2009 3 3.35800e+00 1.57825e+00 128 2009 4 2.06945e+00 2.62432e+00 128 2009 5 2.86785e+00 2.20672e+00 48 2009 6 5.45169e-01 5.39414e-01 176 2009 7 4.91484e+00 2.16149e+00 81 2009 8 5.85654e+00 1.39687e+00 128 2009 9 7.01812e+00 1.46185e+00 161 2009 10 3.46176e+00 1.68571e+00 169 2009 11 3.61716e+00 1.76033e+00 212 2009 12 2.41653e+00 4.70465e-01 64 2010 1 2.61376e+00 9.38041e-01 200 2010 2 3.59457e-01 7.68091e-01 154 2010 3 4.61483e-01 5.79875e-01 192 2010 4 4.17105e-01 6.35880e-01 192 2010 5 2.20165e+00 1.31498e+00 144 2010 6 6.88703e-01 6.93087e-01 174 2010 7 5.15906e+00 1.97813e+00 128 2010 8 2.29628e+00 7.16876e-01 80 2010 9 2.71775e+00 1.35227e+00 203 2010 10 5.25112e+00 2.36470e+00 352 2010 11 2.84782e+00 1.13336e+00 176 2010 12 1.08112e+00 1.00865e+00 206 2011 1 9.99232e-01 5.41842e-01 208 2011 2 1.74635e+00 6.95524e-01 181 2011 3 3.15356e+00 2.44044e+00 192 2011 4 2.12352e+00 1.04134e+00 122 2011 5 2.82909e+00 2.52100e+00 226 2011 6 1.52068e+00 1.83131e+00 144 2011 7 1.60407e+00 1.03096e+00 141 2011 8 9.44580e-01 6.03559e-01 160 2011 9 1.64398e+00 1.22022e+00 182 2011 10 4.41766e+00 1.24284e+00 320 2011 11 2.06379e+00 7.75111e-01 192 2011 12 2.43408e+00 1.38010e+00 109 2012 1 2.18233e+00 1.34128e+00 226 2012 2 3.36049e+00 6.97093e-01 60 2012 3 5.90622e+00 3.38945e+00 240 2012 4 9.84130e+00 3.17477e+00 188 2012 5 1.01698e+01 3.09869e+00 176 2012 6 6.61066e+00 2.43098e+00 112 2012 7 6.68021e+00 2.37023e+00 56 2012 8 4.06074e+00 1.16825e+00 108 2012 9 4.13116e+00 3.53335e+00 156 2012 10 4.42597e+00 2.37473e+00 304 2012 11 3.08878e+00 1.54875e+00 307 2012 12 5.33763e+00 2.00279e+00 122 2013 1 3.04725e+00 9.65187e-01 114 2013 2 2.63391e+00 9.78991e-01 128 2013 3 1.35702e+00 1.40097e+00 176 2013 4 5.72352e+00 4.50689e+00 80 2013 5 5.07913e+00 3.91196e+00 192 2013 6 3.12948e+00 1.92946e+00 123 2013 7 2.84720e+00 1.46188e+00 127 2013 8 3.32283e-01 2.14668e-01 78 2013 9 3.37279e+00 2.63905e+00 215 2013 10 5.73079e+00 2.39843e+00 192 2013 11 4.17105e+00 1.04629e+00 112 2013 12 3.62079e+00 1.77202e+00 112 2014 1 2.79763e+00 9.62361e-01 130 2014 2 2.58893e+00 1.98990e+00 156 2014 3 2.33709e+00 8.56038e-01 160 2014 4 3.38900e+00 1.35256e+00 112 2014 5 7.30203e-01 1.35503e+00 160 2014 6 9.15001e-01 1.03935e+00 106 2014 7 8.94345e-01 9.98158e-01 108 2014 8 5.20127e+00 1.11002e+00 128 2014 9 8.15378e+00 1.72296e+00 144 2014 10 6.27950e+00 2.53856e+00 358 2014 11 3.10081e+00 1.35881e+00 224 2014 12 2.79012e+00 1.05293e+00 192 2015 1 2.97657e+00 2.08331e+00 160 2015 2 3.11261e+00 1.95453e+00 196 2015 3 4.44430e+00 1.67002e+00 100 2015 4 3.83145e+00 5.30064e-01 48 2015 5 9.45601e+00 2.46077e+00 177 2015 6 5.35224e+00 2.33692e+00 160 2015 7 2.39571e+00 2.36005e+00 158 2015 8 4.44306e+00 1.51533e+00 176 2015 9 7.53549e+00 2.68807e+00 160 2015 10 4.31523e+00 2.61283e+00 160 2015 11 1.64505e+00 1.04933e+00 223 2015 12 2.93150e+00 9.36182e-01 100 2016 1 2.35124e+00 1.35339e+00 168 2016 2 3.95949e-01 5.49176e-01 272 2016 3 3.63240e-01 3.80418e-01 144 2016 4 4.14145e-01 5.61321e-01 158 2016 5 2.24846e+00 2.44053e+00 192 2016 6 3.07411e+00 3.84545e+00 163 2016 7 3.71715e-02 2.92566e-02 112 2016 8 4.90724e+00 1.27403e+00 192 2016 9 5.51146e+00 2.09813e+00 223 2016 10 6.64721e+00 2.01170e+00 324 2016 11 7.10951e+00 1.78584e+00 240 2016 12 3.99928e+00 1.02296e+00 192 2017 1 4.79915e+00 3.38965e+00 192 2017 2 1.14079e+00 9.33057e-01 252 2017 3 3.16458e+00 1.75742e+00 208 2017 4 3.78002e+00 2.23074e+00 176 2017 5 1.16111e+00 1.99606e+00 152 2017 6 3.24417e+00 1.12188e+00 80 2017 7 2.00950e+00 1.60600e+00 145 2017 8 2.30518e+00 1.94894e+00 115 2017 9 1.60818e+00 9.36633e-01 191 2017 10 2.01764e+00 1.44674e+00 257 2017 11 4.87286e+00 1.62904e+00 269 2017 12 3.62175e+00 2.46193e+00 144 2018 1 1.86023e+00 1.16711e+00 240 2018 2 5.18857e+00 2.33723e+00 124 2018 3 6.43707e+00 2.69395e+00 220 2018 4 8.73224e+00 4.44244e+00 194 2018 5 2.09423e+00 1.31445e+00 176 2018 6 1.87827e+00 2.62464e+00 127 2018 7 2.80407e+00 1.91078e+00 96 2018 8 2.80541e+00 1.01082e+00 75 2018 9 4.02275e+00 2.19747e+00 191 2018 10 2.86694e+00 2.75249e+00 272 2018 11 2.91593e+00 1.82988e+00 96 2018 12 1.59410e+00 1.45877e+00 128 2019 1 4.33145e-01 5.77475e-01 169 2019 2 1.68066e+00 9.91349e-01 41 2019 3 2.41344e+00 1.18899e+00 160 2019 4 2.94986e+00 1.95438e+00 144 2019 5 2.69992e+00 2.00367e+00 240 2019 6 5.26194e-01 4.42314e-01 96 2019 7 7.48643e-01 9.28162e-01 121 2019 8 1.21435e+00 4.29519e-01 96 2019 9 8.09764e-01 6.93019e-01 320 2019 10 3.06093e+00 9.55608e-01 164 2019 11 3.36567e+00 1.87447e+00 180 2019 12 2.07360e+00 9.64040e-01 144 2020 1 2.13021e+00 5.49166e-01 121 2020 2 3.92211e+00 9.26157e-01 128 2020 3 2.71155e+00 2.66724e+00 102 2020 4 2.78650e-01 3.12772e-01 144 2020 5 4.52630e-01 5.80457e-01 157 2020 6 6.52004e+00 4.88564e+00 127 2020 7 3.27782e+00 2.57385e+00 112 2020 8 1.37875e+00 1.28903e+00 93 2020 9 1.88624e+00 2.06888e+00 124 2020 10 1.70805e+00 1.91468e+00 210 2020 11 2.33823e+00 1.83287e+00 224 2020 12 2.18722e+00 6.08347e-01 208 2021 1 2.18202e+00 1.50921e+00 144 2021 2 1.45537e+00 7.37555e-01 80 2021 3 5.16157e+00 5.40089e+00 156 2021 4 9.21841e+00 5.40820e+00 176 2021 5 9.13943e+00 3.47824e+00 160 2021 6 4.73614e+00 2.31588e+00 80 2021 7 5.28028e-01 6.96795e-01 112 2021 8 1.59478e+00 2.21384e+00 176 2021 9 1.45975e+00 1.82514e+00 128 2021 10 1.75625e+00 1.40863e+00 176 2021 11 2.43721e+00 1.56616e+00 272 2021 12 4.48666e+00 2.26629e+00 128 2022 1 1.62291e+00 9.41796e-01 172 2022 2 2.21802e+00 9.70026e-01 208 2022 3 4.82583e+00 1.34786e+00 234 2022 4 6.62497e+00 2.42015e+00 80 2022 5 1.12949e+01 5.56701e+00 184 2022 6 8.82100e+00 2.18907e+00 156 2022 7 8.17942e+00 2.73799e+00 128 2022 8 9.23285e-01 1.02415e+00 121 2022 9 4.55085e+00 2.30059e+00 224 2022 10 5.24862e+00 1.98741e+00 288 2022 11 4.21341e+00 1.67454e+00 172 2022 12 3.65718e+00 1.34345e+00 118 2023 1 4.59270e+00 1.53278e+00 224 2023 2 3.42992e+00 1.44389e+00 158 2023 3 2.52588e+00 2.26939e+00 103 2023 4 7.49548e+00 9.12854e-01 64 2023 5 1.12369e+01 3.38265e+00 144 2023 6 8.65407e+00 4.56370e+00 80 2023 7 1.99636e+00 8.16151e-01 148 2023 8 4.80254e+00 2.55336e+00 144 2023 9 1.08543e+00 8.22658e-01 168 2023 10 2.75643e+00 1.01416e+00 212 2023 11 2.70345e+00 7.28090e-01 192 2023 12 2.37871e+00 9.18986e-01 80 2024 1 2.57487e+00 1.45380e+00 96 2024 2 1.32979e+00 9.83907e-01 128 2024 3 3.34995e+00 1.66546e+00 69 2024 4 2.61241e+00 7.64216e-01 32