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 1.23200e+01 1.28780e+01 187 2002 8 8.02110e+00 3.15387e+00 413 2002 9 6.36564e+00 6.08588e+00 705 2002 10 4.50392e+00 9.64851e-01 273 2002 11 2.10514e+00 3.02160e-01 61 2002 12 nan nan 0 2003 1 nan nan 0 2003 2 nan nan 0 2003 3 nan nan 0 2003 4 3.98574e+00 6.32831e-01 25 2003 5 4.51815e+00 9.71895e-01 35 2003 6 6.68111e+00 2.91644e+00 289 2003 7 6.92258e+00 3.01049e+00 465 2003 8 1.53522e+01 1.46227e+01 280 2003 9 1.24095e+01 1.02146e+01 138 2003 10 5.22090e+00 2.43715e+00 616 2003 11 2.50402e+00 4.06921e-01 184 2003 12 3.12263e+00 3.99785e-01 197 2004 1 nan nan 0 2004 2 nan nan 0 2004 3 2.96469e+00 4.14538e-01 245 2004 4 3.22981e+00 4.23917e-01 175 2004 5 3.88871e+00 1.22313e+00 113 2004 6 5.11474e+00 1.01384e+00 218 2004 7 4.71712e+00 1.55403e+00 301 2004 8 5.95891e+00 3.33961e+00 307 2004 9 6.57363e+00 3.22718e+00 608 2004 10 3.20532e+00 5.08172e-01 506 2004 11 3.20195e+00 2.23143e-01 124 2004 12 2.83751e+00 1.81899e-01 64 2005 1 2.77356e+00 0.00000e+00 1 2005 2 nan nan 0 2005 3 2.43613e+00 6.93558e-01 145 2005 4 3.18779e+00 7.94749e-01 207 2005 5 3.65494e+00 1.47698e+00 292 2005 6 4.31793e+00 1.22122e+00 267 2005 7 6.06226e+00 2.72442e+00 529 2005 8 1.05119e+01 4.18419e+00 518 2005 9 5.98287e+00 2.20007e+00 821 2005 10 3.27436e+00 2.02140e+00 448 2005 11 2.57769e+00 6.22321e-01 241 2005 12 2.15710e+00 2.57966e-01 2 2006 1 2.53585e+00 2.78922e-01 184 2006 2 3.40745e+00 2.88475e-01 68 2006 3 3.21713e+00 8.58931e-01 252 2006 4 3.89180e+00 1.04517e+00 249 2006 5 3.73419e+00 8.25014e-01 271 2006 6 7.09770e+00 4.44980e+00 391 2006 7 6.56568e+00 3.86765e+00 365 2006 8 1.48648e+01 8.15928e+00 509 2006 9 3.34142e+00 4.86841e-01 126 2006 10 3.09718e+00 3.93136e-01 183 2006 11 2.07738e+00 5.19385e-01 150 2006 12 4.00171e+00 6.65723e-01 64 2007 1 4.62271e+00 6.41649e-01 7 2007 2 nan nan 0 2007 3 3.02590e+00 5.83555e-01 69 2007 4 3.30636e+00 7.77532e-01 265 2007 5 3.98397e+00 9.28356e-01 305 2007 6 5.94404e+00 2.69250e+00 489 2007 7 8.69603e+00 3.98125e+00 513 2007 8 1.33286e+01 1.04686e+01 321 2007 9 9.49761e+00 4.25879e+00 652 2007 10 6.10892e+00 3.14430e+00 255 2007 11 3.18833e+00 4.90351e-01 271 2007 12 2.45098e+00 3.80075e-01 117 2008 1 3.27071e+00 0.00000e+00 1 2008 2 nan nan 0 2008 3 2.43184e+00 4.27874e-01 27 2008 4 4.14828e+00 8.97403e-01 175 2008 5 3.08733e+00 5.38676e-01 136 2008 6 4.58482e+00 1.18573e+00 113 2008 7 6.39656e+00 3.46512e+00 439 2008 8 8.13459e+00 6.32517e+00 503 2008 9 7.23259e+00 5.16335e+00 443 2008 10 3.16222e+00 8.08084e-01 660 2008 11 1.97278e+00 2.68488e-01 128 2008 12 2.74579e+00 0.00000e+00 2 2009 1 nan nan 0 2009 2 nan nan 0 2009 3 3.32850e+00 3.09435e-01 80 2009 4 3.01062e+00 5.32379e-01 83 2009 5 6.55423e+00 2.78840e+00 286 2009 6 6.36506e+00 3.62277e+00 349 2009 7 4.84529e+00 1.95342e+00 300 2009 8 2.24450e+01 9.03986e+00 117 2009 9 1.21748e+01 1.34117e+01 382 2009 10 2.45766e+00 3.20609e-01 158 2009 11 2.81331e+00 6.60817e-01 370 2009 12 2.96014e+00 3.51903e-01 94 2010 1 nan nan 0 2010 2 nan nan 0 2010 3 2.88811e+00 1.03960e+00 171 2010 4 3.17725e+00 7.99137e-01 104 2010 5 4.79869e+00 1.57448e+00 368 2010 6 4.91890e+00 2.41331e+00 148 2010 7 9.43196e+00 3.53896e+00 478 2010 8 1.46583e+01 8.35886e+00 483 2010 9 9.88130e+00 1.07793e+01 139 2010 10 3.20121e+00 1.22406e+00 396 2010 11 2.51203e+00 7.17651e-01 460 2010 12 nan nan 0 2011 1 nan nan 0 2011 2 nan nan 0 2011 3 3.58261e+00 4.50752e-01 174 2011 4 3.68684e+00 1.61092e+00 84 2011 5 5.29460e+00 2.79684e+00 156 2011 6 1.01724e+01 3.64209e+00 202 2011 7 1.48933e+01 1.66485e+01 381 2011 8 2.02611e+01 1.64662e+01 179 2011 9 1.38076e+01 1.87904e+01 112 2011 10 1.25680e+01 1.50707e+01 393 2011 11 3.21976e+00 1.37840e+00 195 2011 12 3.81240e+00 8.11984e-01 144 2012 1 3.54494e+00 4.32558e-01 59 2012 2 2.86985e+00 6.95150e-01 351 2012 3 2.89968e+00 9.93300e-01 381 2012 4 3.69914e+00 4.89918e-01 137 2012 5 3.65711e+00 8.90794e-01 479 2012 6 5.53095e+00 1.48231e+00 424 2012 7 6.57750e+00 2.87501e+00 457 2012 8 1.55639e+01 1.18677e+01 648 2012 9 1.44922e+01 9.88886e+00 413 2012 10 6.07686e+00 2.60514e+00 402 2012 11 1.88051e+00 4.73609e-01 291 2012 12 1.91559e+00 4.68019e-01 135 2013 1 2.13206e+00 3.09621e-01 116 2013 2 2.08799e+00 1.44312e-01 40 2013 3 2.59456e+00 6.38718e-01 215 2013 4 3.38897e+00 5.15293e-01 154 2013 5 4.61518e+00 1.35439e+00 294 2013 6 5.75817e+00 1.67365e+00 343 2013 7 8.68574e+00 5.83173e+00 135 2013 8 2.33374e+01 1.22613e+01 194 2013 9 9.27570e+00 1.50611e+01 439 2013 10 1.75100e+01 1.44808e+01 133 2013 11 3.38666e+00 7.67822e-01 116 2013 12 1.46410e+00 2.24267e-01 32 2014 1 nan nan 0 2014 2 nan nan 0 2014 3 2.40568e+00 5.26117e-01 14 2014 4 3.30364e+00 8.35877e-01 367 2014 5 5.22844e+00 1.98484e+00 307 2014 6 8.74677e+00 3.23606e+00 196 2014 7 8.23513e+00 5.57997e+00 210 2014 8 7.07125e+00 1.67802e+00 270 2014 9 1.06421e+01 1.24053e+01 664 2014 10 2.71338e+00 1.52553e+00 341 2014 11 3.04192e+00 2.46541e-01 121 2014 12 2.90434e+00 3.07871e-01 70 2015 1 nan nan 0 2015 2 nan nan 0 2015 3 1.66158e+00 1.63878e-01 32 2015 4 2.18931e+00 6.39384e-01 286 2015 5 2.88075e+00 1.05312e+00 265 2015 6 3.69726e+00 1.12589e+00 177 2015 7 2.19992e+01 1.83616e+01 269 2015 8 1.80032e+01 1.83392e+01 155 2015 9 1.39803e+01 1.46879e+01 445 2015 10 2.36773e+00 4.74876e-01 180 2015 11 2.51675e+00 5.53376e-01 331 2015 12 nan nan 0 2016 1 2.56198e+00 3.19427e-01 19 2016 2 2.88998e+00 5.47128e-01 189 2016 3 3.03518e+00 4.83282e-01 98 2016 4 4.48370e+00 6.81204e-01 365 2016 5 3.65082e+00 1.60462e+00 304 2016 6 4.41904e+00 1.30814e+00 442 2016 7 1.30581e+01 1.66221e+01 336 2016 8 8.41891e+00 4.25031e+00 424 2016 9 7.83961e+00 6.13771e+00 513 2016 10 3.23201e+00 6.27676e-01 515 2016 11 2.34993e+00 5.58577e-01 513 2016 12 2.10918e+00 1.38951e-01 8 2017 1 2.81601e+00 7.44719e-02 64 2017 2 2.73985e+00 5.25424e-01 244 2017 3 2.98399e+00 3.16024e-01 80 2017 4 3.62386e+00 5.41784e-01 150 2017 5 3.92729e+00 7.47360e-01 249 2017 6 4.05807e+00 2.83755e+00 386 2017 7 8.44196e+00 7.16285e+00 464 2017 8 4.32068e+01 2.69772e+01 98 2017 9 8.85857e+00 1.41774e+01 502 2017 10 3.45219e+00 3.25252e+00 342 2017 11 2.20479e+00 4.37274e-01 400 2017 12 2.47746e+00 6.95223e-01 79 2018 1 nan nan 0 2018 2 3.24954e+00 4.36307e-01 56 2018 3 3.18395e+00 7.54241e-01 285 2018 4 3.90686e+00 6.94891e-01 150 2018 5 6.15867e+00 1.31812e+00 304 2018 6 4.04785e+00 8.89595e-01 164 2018 7 8.22918e+00 3.93336e+00 307 2018 8 1.21794e+01 4.17050e+00 312 2018 9 5.56942e+00 2.93360e+00 500 2018 10 2.35924e+00 3.94540e-01 418 2018 11 3.06362e+00 4.81240e-01 64 2018 12 2.70363e+00 4.39336e-01 204 2019 1 2.64505e+00 3.66881e-01 166 2019 2 nan nan 0 2019 3 3.11281e+00 9.26501e-01 308 2019 4 3.24062e+00 6.34503e-01 262 2019 5 6.59775e+00 2.03655e+00 104 2019 6 7.52271e+00 3.35218e+00 206 2019 7 6.84801e+00 3.04833e+00 142 2019 8 3.25363e+01 2.70045e+01 238 2019 9 7.58280e+00 3.59397e+00 281 2019 10 3.76162e+00 1.84904e+00 434 2019 11 2.42640e+00 6.14250e-01 128 2019 12 2.01812e+00 3.28449e-01 147 2020 1 3.13078e+00 4.69491e-01 72 2020 2 3.06884e+00 8.92585e-01 548 2020 3 2.96522e+00 7.68097e-01 239 2020 4 3.28947e+00 8.41668e-01 222 2020 5 3.56776e+00 7.99710e-01 316 2020 6 5.48123e+00 1.46681e+00 194 2020 7 1.01269e+01 9.17171e+00 832 2020 8 9.00849e+00 5.16747e+00 296 2020 9 6.58819e+00 3.24010e+00 362 2020 10 3.27396e+00 1.29984e+00 273 2020 11 2.44635e+00 7.77961e-01 509 2020 12 2.63240e+00 3.47711e-01 69 2021 1 3.10472e+00 2.80090e-01 112 2021 2 1.36430e+00 1.95272e-01 108 2021 3 2.29326e+00 1.07003e+00 661 2021 4 3.10714e+00 8.91632e-01 188 2021 5 3.62192e+00 9.51476e-01 229 2021 6 3.27423e+00 5.08857e-01 138 2021 7 4.43628e+00 2.86187e-01 10 2021 8 1.41781e+01 9.39835e+00 480 2021 9 9.05014e+00 7.97966e+00 531 2021 10 5.33432e+00 3.71376e+00 263 2021 11 3.55029e+00 1.33019e+00 503 2021 12 3.18880e+00 4.28212e-01 72 2022 1 2.55001e+00 1.94623e-01 45 2022 2 2.85950e+00 4.45371e-01 5 2022 3 3.56744e+00 8.30809e-01 251 2022 4 3.29510e+00 2.35394e-01 71 2022 5 3.02998e+00 9.64866e-01 160 2022 6 5.71653e+00 2.45260e+00 428 2022 7 1.05606e+01 7.01255e+00 298 2022 8 1.69972e+01 1.55982e+01 462 2022 9 5.40414e+00 2.50509e+00 322 2022 10 4.17747e+00 2.29807e+00 497 2022 11 3.13278e+00 1.11012e+00 579 2022 12 3.36728e+00 4.74085e-02 6 2023 1 2.14996e+00 4.76811e-01 162 2023 2 2.79416e+00 1.67249e-01 128 2023 3 2.82537e+00 5.69193e-01 62 2023 4 3.56528e+00 6.30709e-01 432 2023 5 4.86859e+00 1.12378e+00 269 2023 6 3.61711e+00 7.35502e-01 221 2023 7 5.76016e+00 2.70100e+00 256 2023 8 7.22684e+00 3.88202e+00 414 2023 9 7.81042e+00 4.12846e+00 740 2023 10 5.58380e+00 3.98928e+00 432 2023 11 2.77857e+00 8.88390e-01 547 2023 12 3.26556e+00 5.21556e-01 125 2024 1 nan nan 0 2024 2 3.46907e+00 8.23279e-01 370 2024 3 2.56801e+00 5.45404e-01 294 2024 4 nan nan 0