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 1.43666e+01 2.33387e+00 97 2002 8 8.62514e+00 9.85008e-01 96 2002 9 6.66117e+00 4.15054e+00 39 2002 10 8.54080e+00 2.14988e+00 144 2002 11 4.33318e+00 2.14085e+00 160 2002 12 2.90891e+00 1.66127e+00 176 2003 1 9.96978e-01 8.78154e-01 192 2003 2 2.09280e+00 7.08326e-01 160 2003 3 3.08315e+00 1.20974e+00 112 2003 4 6.61989e+00 3.81393e+00 142 2003 5 7.03323e+00 2.70046e+00 111 2003 6 8.54376e-01 6.81433e-01 44 2003 7 4.71048e+00 2.44222e+00 79 2003 8 2.35544e+00 1.13299e+00 78 2003 9 2.20697e+00 2.24435e+00 96 2003 10 4.28108e+00 2.68650e+00 192 2003 11 7.39087e+00 3.05403e+00 196 2003 12 2.20902e+00 1.27013e+00 194 2004 1 3.40664e+00 1.21260e+00 160 2004 2 2.72513e+00 7.15865e-01 41 2004 3 4.08927e+00 2.30200e+00 224 2004 4 5.31523e+00 2.07747e+00 161 2004 5 1.33396e+01 5.22530e+00 208 2004 6 2.26900e+00 1.14614e+00 79 2004 7 4.23449e+00 1.55495e+00 40 2004 8 3.16854e+00 1.15792e+00 80 2004 9 2.49161e+00 1.90398e+00 144 2004 10 3.93178e+00 1.54871e+00 80 2004 11 3.79200e+00 1.69409e+00 112 2004 12 2.15929e+00 7.53994e-01 112 2005 1 1.93587e+00 1.14824e+00 144 2005 2 1.77376e+00 5.92350e-01 111 2005 3 2.31526e+00 1.19529e+00 184 2005 4 3.75118e+00 2.03989e+00 153 2005 5 7.09411e+00 2.51305e+00 176 2005 6 8.78074e+00 3.91264e+00 128 2005 7 6.12192e+00 5.09735e+00 121 2005 8 1.03401e+01 5.86573e+00 63 2005 9 3.23274e+00 2.55835e+00 144 2005 10 5.46104e+00 2.11720e+00 208 2005 11 3.82223e+00 2.61910e+00 185 2005 12 1.38863e+00 6.43549e-01 144 2006 1 3.18581e+00 3.35015e+00 185 2006 2 1.99890e+00 6.60281e-01 152 2006 3 4.76658e+00 1.98834e+00 222 2006 4 1.04735e+01 2.57327e+00 161 2006 5 7.33602e+00 2.62848e+00 176 2006 6 6.52198e+00 4.42848e+00 180 2006 7 1.29190e+01 2.84651e+00 80 2006 8 1.09805e+01 3.99107e+00 128 2006 9 7.66936e+00 3.01829e+00 144 2006 10 6.12050e+00 2.78555e+00 175 2006 11 2.63700e+00 1.38256e+00 208 2006 12 2.70583e+00 9.01660e-01 163 2007 1 2.13163e+00 1.10931e+00 112 2007 2 2.10342e+00 7.79780e-01 128 2007 3 3.52519e+00 1.70719e+00 256 2007 4 1.27590e+01 3.70976e+00 176 2007 5 1.13705e+01 2.35049e+00 112 2007 6 1.50322e+01 4.60699e+00 132 2007 7 9.88329e+00 4.05346e+00 112 2007 8 1.07019e+01 6.93664e-01 96 2007 9 7.14155e+00 1.59770e+00 72 2007 10 3.57080e+00 1.28290e+00 190 2007 11 2.66486e+00 1.32666e+00 214 2007 12 3.66394e+00 8.93510e-01 96 2008 1 2.61636e+00 6.19822e-01 144 2008 2 2.75082e+00 1.40916e+00 228 2008 3 2.81391e+00 2.05926e+00 144 2008 4 7.05983e+00 3.11928e+00 128 2008 5 1.13932e+01 5.79742e+00 144 2008 6 8.54825e-01 6.48135e-01 172 2008 7 5.11844e-01 3.32803e-01 64 2008 8 3.22425e+00 1.50643e+00 73 2008 9 4.43275e+00 2.73299e+00 160 2008 10 2.16212e+00 1.49943e+00 192 2008 11 2.58499e+00 9.90503e-01 240 2008 12 1.85628e+00 8.63709e-01 112 2009 1 1.48749e+00 1.19731e+00 184 2009 2 2.85979e+00 1.72631e+00 176 2009 3 3.91784e+00 2.55260e+00 141 2009 4 7.61958e+00 2.96942e+00 112 2009 5 3.66575e+00 4.37909e+00 105 2009 6 1.36547e+00 1.45811e+00 128 2009 7 3.84490e+00 1.93308e+00 32 2009 8 5.38105e+00 1.79103e+00 96 2009 9 8.32893e+00 2.30209e+00 118 2009 10 5.15538e+00 3.39157e+00 147 2009 11 5.81286e+00 2.05090e+00 133 2009 12 1.55890e+00 6.23998e-01 48 2010 1 2.10987e+00 3.61244e-01 144 2010 2 7.89829e-01 1.21463e+00 112 2010 3 4.72833e-01 5.48385e-01 158 2010 4 1.66806e+00 8.37741e-01 201 2010 5 7.00754e+00 2.78974e+00 144 2010 6 4.17911e+00 1.93811e+00 144 2010 7 8.15574e+00 1.16978e+00 56 2010 8 5.63865e+00 1.78013e+00 66 2010 9 2.27475e+00 1.10726e+00 208 2010 10 5.51888e+00 1.28032e+00 314 2010 11 3.66010e+00 1.64369e+00 240 2010 12 1.69126e+00 8.85132e-01 194 2011 1 1.52502e+00 1.23265e+00 160 2011 2 2.15572e+00 1.96288e+00 161 2011 3 6.67575e+00 3.55130e+00 144 2011 4 8.35004e+00 3.66573e+00 144 2011 5 7.43285e+00 3.59099e+00 160 2011 6 3.51034e+00 1.64989e+00 117 2011 7 2.33854e+00 1.53690e+00 96 2011 8 2.02348e+00 1.37275e+00 160 2011 9 2.35381e+00 1.23401e+00 172 2011 10 3.37283e+00 1.54870e+00 288 2011 11 3.42847e+00 1.82555e+00 160 2011 12 2.12391e+00 9.83629e-01 128 2012 1 2.87264e+00 1.84511e+00 239 2012 2 2.90111e+00 4.23610e-01 48 2012 3 8.22047e+00 3.70380e+00 160 2012 4 1.22054e+01 1.79187e+00 150 2012 5 1.44925e+01 3.34511e+00 176 2012 6 5.04799e+00 4.87217e+00 81 2012 7 1.12677e+01 2.58647e+00 62 2012 8 5.66803e+00 1.25545e+00 64 2012 9 6.40771e+00 4.13032e+00 144 2012 10 5.84338e+00 2.64821e+00 240 2012 11 5.00941e+00 1.64733e+00 272 2012 12 3.87712e+00 2.94644e+00 96 2013 1 3.67776e+00 1.97393e+00 138 2013 2 3.53993e+00 1.14071e+00 76 2013 3 2.64837e+00 1.80743e+00 202 2013 4 1.06437e+01 6.32650e+00 80 2013 5 8.93381e+00 4.91887e+00 128 2013 6 4.94553e+00 2.40783e+00 73 2013 7 3.70661e+00 1.61807e+00 48 2013 8 1.82007e+00 1.86914e+00 128 2013 9 5.22956e+00 4.04093e+00 208 2013 10 4.08121e+00 1.57501e+00 197 2013 11 2.99122e+00 1.07582e+00 112 2013 12 2.81693e+00 1.68037e+00 95 2014 1 2.52634e+00 1.56360e+00 112 2014 2 2.40878e+00 1.69369e+00 144 2014 3 2.09742e+00 5.66590e-01 160 2014 4 6.08698e+00 2.55290e+00 134 2014 5 2.19004e+00 1.66329e+00 144 2014 6 3.03392e+00 1.65995e+00 101 2014 7 3.09607e+00 2.17354e+00 118 2014 8 5.05242e+00 1.70998e+00 165 2014 9 9.90171e+00 1.96391e+00 118 2014 10 7.14491e+00 1.26627e+00 272 2014 11 3.96374e+00 2.05257e+00 224 2014 12 3.65504e+00 1.07606e+00 176 2015 1 2.04703e+00 1.43351e+00 130 2015 2 2.48286e+00 1.07921e+00 187 2015 3 5.34942e+00 2.60731e+00 160 2015 4 1.07021e+01 9.17644e-01 48 2015 5 1.38138e+01 3.08460e+00 192 2015 6 1.05763e+01 4.95481e+00 167 2015 7 3.66487e+00 2.52928e+00 128 2015 8 6.80310e+00 9.52476e-01 115 2015 9 7.73174e+00 9.89458e-01 128 2015 10 3.86500e+00 2.76185e+00 176 2015 11 3.02700e+00 1.62897e+00 128 2015 12 2.51201e+00 1.38891e+00 91 2016 1 1.96928e+00 8.73400e-01 128 2016 2 1.00507e+00 8.23477e-01 240 2016 3 1.24485e+00 9.04001e-01 114 2016 4 1.89129e+00 1.31684e+00 160 2016 5 7.05275e+00 5.35211e+00 154 2016 6 3.99077e+00 2.93457e+00 144 2016 7 1.65959e+00 1.81238e+00 118 2016 8 4.92725e+00 9.08372e-01 86 2016 9 7.50749e+00 1.99233e+00 119 2016 10 8.76640e+00 2.58904e+00 289 2016 11 6.32166e+00 1.83786e+00 224 2016 12 3.94774e+00 1.25932e+00 144 2017 1 3.12926e+00 2.20051e+00 128 2017 2 2.04727e+00 1.22991e+00 206 2017 3 5.75031e+00 3.66182e+00 176 2017 4 6.72226e+00 2.46671e+00 144 2017 5 3.96589e+00 6.15809e+00 121 2017 6 5.03095e+00 3.54993e+00 48 2017 7 3.46176e+00 2.26054e+00 156 2017 8 2.46014e+00 1.77501e+00 96 2017 9 2.41621e+00 1.29072e+00 130 2017 10 2.06289e+00 1.12372e+00 207 2017 11 4.95177e+00 2.74710e+00 228 2017 12 1.57537e+00 4.38439e-01 128 2018 1 1.25137e+00 1.06939e+00 163 2018 2 6.66863e+00 4.04528e+00 80 2018 3 7.66172e+00 2.74816e+00 132 2018 4 9.72110e+00 3.46024e+00 160 2018 5 6.17553e+00 2.28339e+00 128 2018 6 3.13591e+00 9.82046e-01 80 2018 7 2.53294e+00 8.73678e-01 80 2018 8 5.35496e+00 2.24055e+00 96 2018 9 8.27137e+00 3.86190e+00 135 2018 10 4.50032e+00 3.90838e+00 251 2018 11 5.38996e+00 2.50842e+00 80 2018 12 2.27061e+00 1.03556e+00 64 2019 1 1.28431e+00 1.02897e+00 153 2019 2 9.79610e-01 5.84139e-01 57 2019 3 1.54519e+00 1.53703e+00 182 2019 4 4.52716e+00 2.30637e+00 112 2019 5 4.78170e+00 1.32501e+00 220 2019 6 3.72247e+00 3.61078e+00 96 2019 7 1.61082e+00 1.33026e+00 128 2019 8 3.85562e+00 1.01319e+00 107 2019 9 1.21497e+00 8.27373e-01 304 2019 10 3.37832e+00 2.22057e+00 81 2019 11 2.81926e+00 1.87919e+00 160 2019 12 1.62842e+00 6.23059e-01 80 2020 1 2.40405e+00 1.14967e+00 128 2020 2 2.99433e+00 8.08172e-01 128 2020 3 8.25137e+00 5.02378e+00 158 2020 4 1.72001e+00 1.37933e+00 160 2020 5 2.17384e+00 1.62004e+00 112 2020 6 9.51028e+00 4.92036e+00 96 2020 7 5.88017e+00 3.25147e+00 48 2020 8 9.65621e+00 1.07196e+00 112 2020 9 1.57560e+00 7.58941e-01 96 2020 10 1.83511e+00 1.11359e+00 176 2020 11 1.70709e+00 9.30823e-01 268 2020 12 2.08752e+00 1.22199e+00 192 2021 1 2.04856e+00 1.60192e+00 136 2021 2 1.98004e+00 1.54659e+00 96 2021 3 5.70318e+00 3.39723e+00 124 2021 4 9.27176e+00 2.62661e+00 160 2021 5 1.40010e+01 3.16982e+00 127 2021 6 1.00856e+01 4.39689e-01 34 2021 7 2.25137e+00 2.40065e+00 129 2021 8 3.73378e+00 2.72348e+00 117 2021 9 3.60587e+00 2.65020e+00 144 2021 10 1.61245e+00 2.08787e+00 133 2021 11 3.52260e+00 1.45284e+00 192 2021 12 3.60373e+00 1.44534e+00 85 2022 1 2.43442e+00 2.28322e+00 224 2022 2 3.93756e+00 3.79561e+00 176 2022 3 5.81883e+00 1.27079e+00 240 2022 4 1.23012e+01 4.70047e+00 48 2022 5 1.34253e+01 5.79784e+00 147 2022 6 1.65324e+01 3.31489e+00 160 2022 7 1.42448e+01 5.87320e+00 112 2022 8 1.65436e+00 1.64096e+00 160 2022 9 5.71536e+00 2.14226e+00 200 2022 10 4.90635e+00 2.04702e+00 271 2022 11 4.71753e+00 1.96749e+00 160 2022 12 5.47379e+00 2.84091e+00 140 2023 1 4.96055e+00 2.02994e+00 237 2023 2 4.00053e+00 2.17594e+00 144 2023 3 2.99468e+00 1.85084e+00 144 2023 4 1.10517e+01 3.54450e+00 96 2023 5 1.28083e+01 2.23863e+00 152 2023 6 8.84705e+00 3.76342e+00 100 2023 7 2.40886e+00 1.01552e+00 130 2023 8 2.77569e+00 2.08652e+00 189 2023 9 1.98603e+00 1.33923e+00 109 2023 10 3.71965e+00 1.49578e+00 171 2023 11 2.24080e+00 9.80950e-01 162 2023 12 1.68439e+00 7.74888e-01 48 2024 1 1.96055e+00 7.78868e-01 110 2024 2 1.41932e+00 1.10519e+00 125 2024 3 4.29271e+00 1.94940e+00 96 2024 4 nan nan 0