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 8.01943e+00 1.90440e+00 64 2002 8 nan nan 0 2002 9 9.10923e+00 2.83953e+00 64 2002 10 5.61693e+00 3.71454e+00 396 2002 11 3.79606e+00 4.52087e+00 638 2002 12 8.01449e+00 4.89102e+00 539 2003 1 1.13320e+01 5.17447e+00 405 2003 2 1.55834e+01 5.35119e+00 204 2003 3 1.68686e+01 5.61340e+00 323 2003 4 nan nan 0 2003 5 8.98632e+00 3.44991e-01 5 2003 6 nan nan 0 2003 7 nan nan 0 2003 8 1.04155e+01 1.29328e+00 64 2003 9 8.19255e+00 5.77425e+00 286 2003 10 5.50402e+00 4.76582e+00 283 2003 11 3.01051e+00 2.47604e+00 400 2003 12 7.46154e+00 4.98628e+00 493 2004 1 8.61721e+00 7.31607e+00 397 2004 2 1.58333e+01 4.49689e+00 487 2004 3 1.67353e+01 4.70555e+00 398 2004 4 1.17152e+01 7.89205e+00 274 2004 5 1.02029e+01 1.24119e+00 25 2004 6 nan nan 0 2004 7 nan nan 0 2004 8 1.85517e+00 7.44684e-01 46 2004 9 3.53489e+00 1.67854e+00 148 2004 10 7.19325e+00 5.26543e+00 185 2004 11 1.60097e+01 6.35760e+00 255 2004 12 9.93052e+00 5.96928e+00 553 2005 1 1.54636e+01 3.65430e+00 150 2005 2 1.14996e+01 7.93247e+00 562 2005 3 1.89854e+01 6.13778e+00 287 2005 4 1.30309e+01 5.16109e+00 283 2005 5 1.02439e+01 5.17940e+00 154 2005 6 nan nan 0 2005 7 nan nan 0 2005 8 3.16715e+00 2.13208e+00 66 2005 9 2.13654e+00 4.04510e+00 68 2005 10 9.23254e-01 1.11838e+00 128 2005 11 1.04864e+01 5.62119e+00 450 2005 12 1.35306e+01 3.86992e+00 705 2006 1 1.55532e+01 1.88951e+00 215 2006 2 1.58754e+01 4.27296e+00 446 2006 3 1.57960e+01 6.81459e+00 391 2006 4 2.29556e+00 4.45915e+00 142 2006 5 8.75185e+00 5.23102e+00 158 2006 6 nan nan 0 2006 7 9.81883e+00 7.04468e+00 192 2006 8 8.32824e+00 1.06696e+00 64 2006 9 7.09507e+00 3.42450e+00 149 2006 10 8.26691e+00 6.07189e+00 154 2006 11 1.18300e+01 6.35683e+00 415 2006 12 7.52539e+00 6.83102e+00 376 2007 1 1.29823e+01 3.43646e+00 384 2007 2 1.14816e+01 5.93864e+00 268 2007 3 4.15073e+00 5.27093e+00 62 2007 4 1.58552e+01 2.96585e+00 64 2007 5 nan nan 0 2007 6 nan nan 0 2007 7 5.22784e+00 5.53762e-01 64 2007 8 8.61664e+00 2.72988e+00 64 2007 9 4.64198e+00 4.36895e+00 129 2007 10 6.54509e+00 3.78933e+00 159 2007 11 1.00854e+01 5.24062e+00 176 2007 12 9.26495e+00 3.85188e+00 732 2008 1 1.44505e+01 6.37603e+00 724 2008 2 1.68497e+01 4.34113e+00 442 2008 3 1.97334e+01 6.03095e+00 228 2008 4 1.72088e+01 1.76728e+00 140 2008 5 1.52432e+01 1.59191e+00 64 2008 6 1.19784e+01 2.45971e+00 64 2008 7 1.11442e+01 1.35586e+00 75 2008 8 2.53579e+00 2.11635e+00 128 2008 9 5.56133e+00 1.62937e+00 78 2008 10 5.29916e+00 6.75794e+00 294 2008 11 1.18347e+01 6.16206e+00 482 2008 12 1.23511e+01 5.85968e+00 548 2009 1 1.71488e+01 4.18109e+00 540 2009 2 1.88782e+01 7.40390e+00 264 2009 3 1.37551e+01 4.14204e+00 177 2009 4 1.07839e+01 3.79678e+00 149 2009 5 1.02941e+01 2.14717e+00 74 2009 6 nan nan 0 2009 7 4.77146e+00 4.13612e+00 215 2009 8 1.44215e+01 2.97867e+00 175 2009 9 5.92569e+00 2.27303e+00 88 2009 10 3.34309e+00 3.67557e+00 312 2009 11 1.86529e+00 2.07593e+00 387 2009 12 9.66936e+00 4.87069e+00 428 2010 1 1.22003e+01 4.91669e+00 392 2010 2 1.07361e+01 1.00383e+01 351 2010 3 1.65378e+01 1.46838e+00 79 2010 4 1.85436e+01 1.45452e-01 3 2010 5 6.00912e-01 5.41903e-01 64 2010 6 2.78585e+00 2.08604e+00 64 2010 7 nan nan 0 2010 8 5.10302e+00 8.36772e-01 30 2010 9 4.11177e+00 5.87976e-01 64 2010 10 5.25278e+00 5.02237e+00 236 2010 11 6.20444e+00 4.57387e+00 384 2010 12 9.06289e+00 3.21141e+00 554 2011 1 1.19066e+01 4.33857e+00 549 2011 2 1.58082e+01 7.41600e+00 209 2011 3 1.60139e+01 3.91628e+00 353 2011 4 1.65514e+01 6.88475e+00 344 2011 5 7.25160e+00 1.62960e+00 130 2011 6 6.42359e+00 1.29280e+00 13 2011 7 nan nan 0 2011 8 nan nan 0 2011 9 5.65514e+00 2.11138e+00 245 2011 10 8.79483e+00 3.51359e+00 329 2011 11 4.28750e+00 3.23749e+00 307 2011 12 1.64750e+01 3.76366e+00 517 2012 1 1.16953e+01 6.14614e+00 552 2012 2 1.00378e+01 5.69987e+00 482 2012 3 1.95160e+01 4.13151e+00 420 2012 4 7.77717e+00 9.02484e+00 89 2012 5 1.39178e+01 5.04737e+00 141 2012 6 nan nan 0 2012 7 nan nan 0 2012 8 nan nan 0 2012 9 1.02773e+01 4.02740e+00 238 2012 10 1.88964e+00 1.97643e+00 155 2012 11 4.32574e+00 3.74299e+00 214 2012 12 1.36080e+01 2.03530e+00 426 2013 1 1.18517e+01 4.32102e+00 294 2013 2 1.34707e+01 5.47099e+00 291 2013 3 7.86631e+00 5.00141e+00 127 2013 4 1.00950e+01 5.76663e+00 125 2013 5 1.48848e+00 1.52637e+00 192 2013 6 nan nan 0 2013 7 9.35655e+00 4.93026e+00 124 2013 8 2.64799e+01 0.00000e+00 1 2013 9 5.75162e+00 4.20070e+00 143 2013 10 6.98656e+00 4.24153e+00 196 2013 11 3.32018e+00 2.60076e+00 505 2013 12 8.00392e+00 4.61468e+00 493 2014 1 1.55477e+01 4.68499e+00 479 2014 2 1.51183e+01 7.36729e+00 337 2014 3 1.86633e+01 6.60804e+00 232 2014 4 1.66834e+01 4.34532e+00 186 2014 5 1.02166e+01 2.40685e+00 27 2014 6 nan nan 0 2014 7 nan nan 0 2014 8 1.56039e+01 6.04655e-01 16 2014 9 9.95407e+00 2.66403e+00 139 2014 10 1.14520e+01 6.15374e+00 292 2014 11 3.59594e+00 3.18491e+00 341 2014 12 1.11997e+01 7.48576e+00 559 2015 1 1.56874e+01 6.78724e+00 585 2015 2 6.58980e+00 6.42952e+00 358 2015 3 1.16101e+01 3.49730e+00 323 2015 4 1.71282e+01 3.10824e+00 41 2015 5 1.46164e+01 4.42122e+00 26 2015 6 nan nan 0 2015 7 nan nan 0 2015 8 6.81706e-01 4.12435e-01 49 2015 9 5.39457e+00 3.32494e+00 327 2015 10 1.30728e+00 1.36175e+00 280 2015 11 1.13065e+01 4.01403e+00 257 2015 12 9.35592e+00 6.94254e+00 468 2016 1 7.46842e+00 5.67762e+00 415 2016 2 1.35519e+01 8.25380e+00 388 2016 3 1.85200e+01 8.86709e-01 65 2016 4 1.57480e+01 1.02446e+01 243 2016 5 8.65542e+00 6.24896e-01 64 2016 6 1.42574e+01 2.00626e+00 44 2016 7 nan nan 0 2016 8 7.87246e+00 1.55362e+00 64 2016 9 nan nan 0 2016 10 5.82526e+00 4.93549e+00 371 2016 11 5.64822e+00 5.41982e+00 218 2016 12 1.17199e+01 7.30518e+00 488 2017 1 1.25906e+01 4.49044e+00 493 2017 2 1.45963e+01 3.10344e+00 493 2017 3 1.53084e+01 8.05057e+00 412 2017 4 1.37707e+01 8.84662e+00 168 2017 5 7.48822e+00 2.80459e+00 128 2017 6 1.36623e+01 1.96383e+00 64 2017 7 6.93309e+00 5.30764e-01 8 2017 8 1.67088e+00 5.45290e-01 64 2017 9 3.26859e+00 3.31856e+00 128 2017 10 1.06589e+01 2.18345e+00 66 2017 11 4.01394e+00 3.38112e+00 294 2017 12 1.08981e+01 4.03924e+00 592 2018 1 1.23014e+01 5.51238e+00 459 2018 2 1.73707e+01 3.46032e+00 188 2018 3 9.97977e+00 6.64948e+00 303 2018 4 1.33695e+01 2.16973e+00 62 2018 5 8.43684e+00 2.69399e-01 8 2018 6 nan nan 0 2018 7 6.96939e+00 1.88103e+00 64 2018 8 4.33646e+00 8.27418e-01 52 2018 9 1.58830e+00 1.46872e+00 252 2018 10 1.00677e+01 6.02408e+00 348 2018 11 4.12225e+00 2.46814e+00 315 2018 12 1.03298e+01 4.54653e+00 537 2019 1 1.37626e+01 5.48041e+00 553 2019 2 2.02390e+01 5.24335e+00 211 2019 3 2.17305e+01 4.68974e+00 232 2019 4 1.07340e+01 3.01866e+00 128 2019 5 2.28126e+01 2.59659e-01 5 2019 6 4.05319e+00 9.05907e+00 58 2019 7 1.80540e+01 9.90844e-01 64 2019 8 8.45798e+00 5.37989e-01 7 2019 9 5.72872e-01 7.68667e-01 209 2019 10 4.47418e+00 5.04440e+00 379 2019 11 8.10597e+00 6.89901e+00 578 2019 12 8.41036e+00 4.36182e+00 486 2020 1 1.41662e+01 4.07450e+00 430 2020 2 1.66459e+01 4.83839e+00 500 2020 3 2.07439e+01 4.08611e+00 229 2020 4 1.91671e+01 6.62999e+00 137 2020 5 3.66768e+00 1.79954e+00 64 2020 6 1.66707e+01 9.50455e-01 64 2020 7 1.68322e+01 5.73792e-01 64 2020 8 2.60334e+00 1.51996e+00 64 2020 9 7.77304e+00 6.32076e+00 233 2020 10 3.08153e+00 1.73394e+00 128 2020 11 7.30741e+00 5.32505e+00 432 2020 12 1.13390e+01 4.19364e+00 607 2021 1 1.62478e+01 3.69375e+00 610 2021 2 1.65938e+01 5.20654e+00 486 2021 3 1.57192e+01 5.89592e+00 400 2021 4 1.60245e+01 3.88218e-01 64 2021 5 1.10111e+00 5.95788e-01 16 2021 6 nan nan 0 2021 7 1.45247e+00 6.85508e-01 105 2021 8 4.76984e-01 2.77171e-01 64 2021 9 8.16930e+00 3.66021e+00 108 2021 10 6.50142e+00 3.77748e+00 309 2021 11 9.71694e+00 5.28159e+00 642 2021 12 9.58047e+00 2.71643e+00 421 2022 1 1.59927e+01 4.23061e+00 500 2022 2 2.27296e+01 4.17072e+00 294 2022 3 1.61431e+01 3.30775e+00 254 2022 4 1.52227e+01 2.94616e+00 53 2022 5 3.02735e+01 1.64256e+00 25 2022 6 1.16715e+01 5.07872e-01 64 2022 7 1.28887e+01 1.59288e+00 34 2022 8 1.48320e+00 9.66845e-01 64 2022 9 3.93108e+00 3.38295e+00 199 2022 10 3.55721e+00 1.02460e+00 113 2022 11 6.35908e+00 5.50396e+00 720 2022 12 1.14791e+01 4.30038e+00 689 2023 1 1.21493e+01 4.52910e+00 562 2023 2 1.56960e+01 6.07332e+00 266 2023 3 1.82188e+01 8.63158e+00 614 2023 4 1.80054e+01 4.38717e+00 210 2023 5 1.36588e+01 5.72327e+00 216 2023 6 7.34834e+00 6.05134e+00 79 2023 7 nan nan 0 2023 8 3.96850e-02 4.90273e-02 5 2023 9 3.38820e+00 2.30574e+00 194 2023 10 8.23232e+00 3.19568e+00 146 2023 11 1.47891e+01 4.32963e+00 264 2023 12 1.30452e+01 5.84975e+00 677 2024 1 1.45497e+01 6.44813e+00 476 2024 2 1.46656e+01 7.18736e+00 618 2024 3 1.61393e+01 3.91462e+00 216 2024 4 1.29632e+01 2.55609e-01 4