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 2.42675e+01 5.38748e+00 145 2002 8 1.89609e+01 6.58728e+00 81 2002 9 1.73589e+01 5.27387e+00 178 2002 10 1.63259e+01 4.23832e+00 253 2002 11 1.03451e+01 6.71338e+00 19 2002 12 8.98807e+00 2.61669e+00 97 2003 1 1.22074e+01 1.76907e+00 80 2003 2 1.91977e+01 4.35329e+00 188 2003 3 2.56486e+01 6.27434e+00 265 2003 4 2.50773e+01 7.23587e+00 225 2003 5 2.91672e+01 4.93652e+00 140 2003 6 3.12966e+01 7.72730e+00 165 2003 7 3.13329e+01 3.95526e+00 124 2003 8 2.73813e+01 7.92659e+00 118 2003 9 2.45607e+01 5.60062e+00 117 2003 10 2.18467e+01 5.21056e+00 332 2003 11 1.67714e+01 4.50515e+00 321 2003 12 1.05327e+01 1.53322e+00 23 2004 1 1.42800e+01 4.07768e+00 461 2004 2 1.70281e+01 3.02036e+00 255 2004 3 1.84570e+01 5.36408e+00 460 2004 4 2.64897e+01 5.84580e+00 187 2004 5 2.92757e+01 5.87325e+00 182 2004 6 3.20946e+01 8.07882e+00 410 2004 7 3.15212e+01 5.43781e+00 315 2004 8 2.17460e+01 6.75249e+00 157 2004 9 9.41269e+00 3.21231e+00 113 2004 10 1.62007e+01 4.96610e+00 178 2004 11 1.28561e+01 2.82387e+00 341 2004 12 1.33442e+01 1.44901e+00 84 2005 1 1.12242e+01 3.28176e+00 600 2005 2 1.70903e+01 4.99799e+00 379 2005 3 2.23296e+01 4.36190e+00 377 2005 4 2.12200e+01 4.71891e+00 270 2005 5 2.78642e+01 5.75432e+00 401 2005 6 1.96541e+01 8.36549e+00 115 2005 7 1.72652e+01 1.41404e+01 154 2005 8 2.04453e+01 1.16011e+01 195 2005 9 2.05763e+01 6.16380e+00 280 2005 10 1.70858e+01 3.50329e+00 112 2005 11 3.32762e+00 3.10476e+00 171 2005 12 1.35143e+01 2.60685e+00 23 2006 1 1.18375e+01 2.35589e+00 93 2006 2 2.05431e+01 6.40411e+00 463 2006 3 2.38503e+01 4.60320e+00 495 2006 4 2.60143e+01 6.30030e+00 462 2006 5 3.09431e+01 6.43205e+00 306 2006 6 3.07836e+01 1.13993e+01 522 2006 7 3.19392e+01 6.10557e+00 84 2006 8 2.24590e+01 4.77573e+00 214 2006 9 1.80223e+01 2.26931e+00 77 2006 10 1.78746e+01 3.95584e+00 156 2006 11 1.26955e+01 3.69131e+00 288 2006 12 1.20206e+01 3.62938e+00 185 2007 1 1.22002e+01 3.22469e+00 457 2007 2 1.60322e+01 5.11233e+00 329 2007 3 1.98590e+01 6.10869e+00 621 2007 4 2.38323e+01 7.84830e+00 355 2007 5 2.85479e+01 9.45938e+00 246 2007 6 2.57569e+01 8.81368e+00 136 2007 7 2.99263e+01 4.75383e+00 251 2007 8 2.65793e+01 6.46439e+00 259 2007 9 1.86207e+01 7.99695e+00 158 2007 10 1.58892e+01 3.69004e+00 46 2007 11 1.46383e+01 2.39117e+00 192 2007 12 1.34866e+01 3.07149e+00 349 2008 1 1.28880e+01 2.57763e+00 266 2008 2 2.04457e+01 5.15240e+00 504 2008 3 2.22441e+01 6.82851e+00 346 2008 4 2.42915e+01 5.20367e+00 439 2008 5 2.73214e+01 7.36849e+00 292 2008 6 3.04646e+01 5.87470e+00 203 2008 7 2.47894e+01 4.09570e+00 174 2008 8 2.66774e+01 4.59377e+00 172 2008 9 1.69016e+01 4.79147e+00 59 2008 10 1.73884e+01 4.41270e+00 166 2008 11 1.21682e+01 5.25236e+00 324 2008 12 1.23827e+01 4.14187e+00 458 2009 1 1.34240e+01 2.14945e+00 188 2009 2 1.64552e+01 5.86360e+00 469 2009 3 2.18409e+01 8.49968e+00 598 2009 4 2.21005e+01 4.76820e+00 186 2009 5 2.92075e+01 4.02772e+00 165 2009 6 3.05627e+01 4.03463e+00 369 2009 7 3.01895e+01 6.33916e+00 247 2009 8 2.85086e+01 8.64352e+00 160 2009 9 2.51864e+01 5.74019e+00 451 2009 10 2.13723e+01 3.84190e+00 232 2009 11 1.11986e+01 3.54691e+00 6 2009 12 9.30263e+00 2.59246e+00 189 2010 1 1.52113e+01 3.00312e+00 124 2010 2 1.10570e+01 2.37303e+00 54 2010 3 1.52572e+01 8.18031e+00 303 2010 4 2.77707e+01 5.41903e+00 236 2010 5 2.68389e+01 1.22487e+01 440 2010 6 3.01469e+01 1.13881e+01 480 2010 7 3.27211e+01 6.30117e+00 275 2010 8 2.95230e+01 4.74061e+00 172 2010 9 2.35472e+01 5.32393e+00 115 2010 10 1.58343e+01 3.29801e+00 252 2010 11 1.27424e+01 2.12390e+00 221 2010 12 8.45219e+00 3.73275e+00 68 2011 1 1.04791e+01 1.11499e+00 21 2011 2 1.90079e+01 3.47685e+00 214 2011 3 2.82763e+01 4.36513e+00 490 2011 4 2.55435e+01 5.54996e+00 371 2011 5 2.81383e+01 1.02250e+01 394 2011 6 2.96272e+01 5.26072e+00 171 2011 7 2.91475e+01 1.22495e+01 516 2011 8 2.65438e+01 3.81860e+00 183 2011 9 1.98013e+01 6.20147e+00 143 2011 10 1.45826e+01 4.58539e+00 72 2011 11 1.26849e+01 3.72684e+00 69 2011 12 8.98235e+00 2.30358e+00 56 2012 1 1.33323e+01 2.82202e+00 170 2012 2 1.79868e+01 3.47729e+00 459 2012 3 2.23225e+01 4.25397e+00 550 2012 4 2.56718e+01 6.23428e+00 342 2012 5 3.01622e+01 5.06751e+00 274 2012 6 3.14377e+01 8.82463e+00 245 2012 7 2.14787e+01 1.51985e+01 222 2012 8 2.83656e+01 1.19645e+01 186 2012 9 2.27154e+01 1.28301e+01 373 2012 10 2.05017e+01 9.11500e+00 570 2012 11 1.11836e+01 4.00935e+00 377 2012 12 9.18692e+00 4.24951e+00 322 2013 1 1.29011e+01 2.75846e+00 264 2013 2 2.00339e+01 5.53657e+00 402 2013 3 2.05592e+01 5.79659e+00 334 2013 4 2.48185e+01 3.63977e+00 210 2013 5 3.08482e+01 3.91776e+00 314 2013 6 2.90230e+01 7.18454e+00 71 2013 7 2.71412e+01 4.39455e+00 235 2013 8 2.35003e+01 6.74310e+00 120 2013 9 1.92181e+01 5.47219e+00 159 2013 10 1.48683e+01 2.84393e+00 160 2013 11 4.72231e+00 2.01090e+00 11 2013 12 1.26115e+01 2.45714e+00 76 2014 1 1.22409e+01 3.77487e+00 146 2014 2 1.97566e+01 3.50807e+00 306 2014 3 2.14104e+01 6.13776e+00 299 2014 4 2.37190e+01 5.40227e+00 273 2014 5 2.26929e+01 6.84206e+00 213 2014 6 3.04783e+01 5.39996e+00 339 2014 7 2.65218e+01 7.69046e+00 210 2014 8 2.98484e+01 5.66420e+00 70 2014 9 2.42169e+01 2.54045e+00 75 2014 10 1.93902e+01 5.00560e+00 120 2014 11 1.27038e+01 3.98826e+00 76 2014 12 1.17157e+01 3.61455e+00 171 2015 1 1.20233e+01 1.35242e+00 24 2015 2 1.67226e+01 2.89515e+00 90 2015 3 2.05457e+01 5.12116e+00 539 2015 4 2.42109e+01 2.86236e+00 224 2015 5 2.93293e+01 5.25420e+00 253 2015 6 2.80705e+01 7.79937e+00 219 2015 7 2.86798e+01 5.70267e+00 189 2015 8 2.69383e+01 5.89005e+00 249 2015 9 2.02937e+01 4.78995e+00 153 2015 10 1.78561e+01 7.13641e+00 152 2015 11 1.36308e+01 5.43479e+00 80 2015 12 1.03547e+01 2.01287e+00 34 2016 1 1.38642e+01 2.43974e+00 43 2016 2 1.02501e+01 4.78527e+00 152 2016 3 2.06511e+01 7.14618e+00 273 2016 4 2.83611e+01 7.06694e+00 301 2016 5 3.01295e+01 9.52312e+00 448 2016 6 2.54234e+01 1.49622e+01 325 2016 7 2.92857e+01 1.29271e+01 415 2016 8 3.13848e+01 1.05891e+01 375 2016 9 2.91358e+01 5.49849e+00 517 2016 10 1.83226e+01 5.73975e+00 144 2016 11 7.17482e+00 5.18958e+00 611 2016 12 5.28589e+00 4.71249e+00 147 2017 1 7.27361e+00 5.23218e+00 44 2017 2 2.03791e+01 2.56316e+00 239 2017 3 1.64636e+01 3.42913e+00 171 2017 4 2.31957e+01 3.98159e+00 155 2017 5 2.79891e+01 3.84216e+00 199 2017 6 2.57168e+01 4.22786e+00 110 2017 7 2.43794e+01 5.14099e+00 129 2017 8 2.64987e+01 8.05515e+00 266 2017 9 2.38632e+01 4.45188e+00 118 2017 10 1.18671e+01 2.23832e+00 86 2017 11 1.36076e+01 3.10444e+00 272 2017 12 1.06950e+01 3.09504e+00 223 2018 1 1.81177e+00 3.52281e+00 12 2018 2 1.95452e+01 5.18668e+00 230 2018 3 1.94339e+01 4.05266e+00 636 2018 4 2.81786e+01 8.83059e+00 602 2018 5 2.78463e+01 1.05657e+01 249 2018 6 3.09692e+01 8.79808e+00 275 2018 7 2.93988e+01 9.94608e+00 431 2018 8 2.88771e+01 7.95752e+00 231 2018 9 2.66131e+01 6.35762e+00 323 2018 10 1.72571e+01 6.02748e+00 509 2018 11 1.55205e+01 8.54680e+00 408 2018 12 9.27770e+00 2.68931e+00 167 2019 1 1.21993e+01 3.19620e+00 162 2019 2 1.91150e+01 3.18117e+00 548 2019 3 2.33408e+01 5.02199e+00 354 2019 4 2.65369e+01 3.88162e+00 262 2019 5 2.81067e+01 5.95409e+00 338 2019 6 2.50514e+01 5.08018e+00 387 2019 7 2.77085e+01 8.25390e+00 353 2019 8 2.54874e+01 3.91305e+00 180 2019 9 1.59423e+01 4.29767e+00 101 2019 10 1.39198e+01 3.27325e+00 229 2019 11 1.30009e+01 2.61909e+00 161 2019 12 1.26534e+01 3.19159e+00 130 2020 1 1.32544e+01 1.69859e+00 122 2020 2 1.67739e+01 7.26833e+00 430 2020 3 2.22344e+01 7.97843e+00 414 2020 4 2.25645e+01 4.01235e+00 186 2020 5 2.32836e+01 5.27902e+00 236 2020 6 3.24849e+01 3.51073e+00 191 2020 7 2.88349e+01 5.44965e+00 238 2020 8 3.09333e+01 3.49238e+00 240 2020 9 2.03006e+01 5.26015e+00 104 2020 10 1.42850e+01 2.89316e+00 82 2020 11 1.06287e+01 3.80830e+00 133 2020 12 8.69899e+00 1.41739e+00 40 2021 1 nan nan 0 2021 2 2.01316e+01 2.98044e+00 323 2021 3 2.15468e+01 4.98959e+00 556 2021 4 1.84888e+01 8.00118e+00 218 2021 5 2.93385e+01 4.92966e+00 262 2021 6 3.22209e+01 5.33500e+00 205 2021 7 2.56225e+01 6.41752e+00 176 2021 8 2.24235e+01 5.42230e+00 180 2021 9 2.26882e+01 3.93560e+00 243 2021 10 1.94554e+01 5.30114e+00 131 2021 11 1.30405e+01 2.28479e+00 173 2021 12 1.15926e+01 2.60703e+00 492 2022 1 1.14327e+01 2.27851e+00 147 2022 2 1.94064e+01 4.94631e+00 402 2022 3 1.64262e+01 7.08782e+00 538 2022 4 2.13052e+01 7.97908e+00 101 2022 5 3.23526e+01 5.78648e+00 119 2022 6 2.74118e+01 6.50478e+00 236 2022 7 2.98393e+01 6.99633e+00 262 2022 8 2.54510e+01 5.31734e+00 184 2022 9 1.93639e+01 5.00826e+00 134 2022 10 3.75059e+00 2.79797e+00 12 2022 11 1.02685e+01 1.62371e+00 29 2022 12 1.17216e+01 2.13733e+00 186 2023 1 8.09149e+00 2.12968e+00 88 2023 2 1.62908e+01 7.08269e+00 512 2023 3 2.56820e+01 6.14183e+00 425 2023 4 2.25110e+01 7.95788e+00 225 2023 5 2.33570e+01 1.22679e+01 572 2023 6 2.90296e+01 1.27759e+01 414 2023 7 2.81132e+01 7.05357e+00 376 2023 8 2.59444e+01 5.20242e+00 224 2023 9 1.96030e+01 6.43528e+00 125 2023 10 1.22539e+01 7.49571e+00 141 2023 11 8.79479e+00 1.94676e+00 108 2023 12 1.31598e+01 2.80716e+00 99 2024 1 1.38670e+01 2.32960e+00 141 2024 2 1.81622e+01 5.76827e+00 646 2024 3 1.96443e+01 7.12938e+00 332 2024 4 2.41495e+01 1.70779e+00 34