YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.76797e+00 5.37806e-01 32 2000 3 3.15762e+00 3.41474e-01 319 2000 4 4.20803e+00 6.84118e-01 266 2000 5 9.57715e+00 1.04116e+00 156 2000 6 1.55830e+01 2.00814e+00 277 2000 7 1.91210e+01 9.40666e-01 612 2000 8 2.04977e+01 8.20265e-01 647 2000 9 1.81660e+01 2.74831e+00 621 2000 10 1.40307e+01 8.47334e-01 492 2000 11 1.33256e+01 8.96026e-01 398 2000 12 8.09600e+00 1.10193e+00 165 2001 1 9.06122e-01 5.71865e-01 156 2001 2 1.23071e+00 2.17123e-01 28 2001 3 1.47802e+00 4.82965e-01 296 2001 4 2.64301e+00 6.82524e-01 98 2001 5 9.97500e+00 5.74823e-01 7 2001 6 1.00750e+01 1.19391e+00 11 2001 7 2.06759e+01 1.85077e+00 833 2001 8 2.19736e+01 1.50859e+00 1237 2001 9 1.99990e+01 1.17853e+00 1317 2001 10 1.46202e+01 1.18468e+00 464 2001 11 1.14005e+01 7.86504e-01 712 2001 12 9.56377e+00 3.81829e-01 582 2002 1 5.31315e+00 7.77226e-01 54 2002 2 3.31295e+00 5.47428e-01 259 2002 3 2.34821e+00 1.01342e+00 238 2002 4 4.08807e+00 8.36330e-01 230 2002 5 6.46073e+00 8.42648e-01 445 2002 6 1.55471e+01 4.88762e+00 226 2002 7 2.21941e+01 1.17519e+00 2622 2002 8 2.21701e+01 9.24375e-01 2937 2002 9 2.10014e+01 1.69084e+00 3414 2002 10 1.60558e+01 2.34432e+00 1330 2002 11 9.62968e+00 6.70796e-01 791 2002 12 5.70560e+00 8.83481e-01 680 2003 1 3.50243e+00 1.16047e+00 183 2003 2 2.92377e-01 3.33376e-01 162 2003 3 9.61130e-01 4.10674e-01 146 2003 4 1.88009e+00 6.98187e-01 428 2003 5 6.10463e+00 1.68168e+00 258 2003 6 1.41040e+01 2.01006e+00 311 2003 7 1.96881e+01 1.14003e+00 2273 2003 8 2.19740e+01 1.02017e+00 2740 2003 9 2.04197e+01 9.29672e-01 2161 2003 10 1.39605e+01 1.08312e+00 1337 2003 11 9.95848e+00 1.32485e+00 754 2003 12 7.32883e+00 1.15566e+00 608 2004 1 4.04202e+00 4.24657e-01 114 2004 2 7.10119e-01 2.85022e-01 377 2004 3 1.28057e+00 9.13138e-01 150 2004 4 3.02681e+00 9.79118e-01 682 2004 5 7.45419e+00 2.80110e+00 396 2004 6 1.44604e+01 1.03675e+00 986 2004 7 1.90341e+01 1.70632e+00 2084 2004 8 1.93435e+01 1.21198e+00 2404 2004 9 1.98646e+01 5.24281e-01 3309 2004 10 1.42336e+01 1.53394e+00 1125 2004 11 1.06698e+01 1.04712e+00 762 2004 12 6.40836e+00 1.20288e+00 558 2005 1 2.72065e+00 1.32715e+00 307 2005 2 1.29568e+00 1.02622e+00 183 2005 3 1.09885e+00 7.13139e-01 300 2005 4 3.32391e+00 6.34193e-01 256 2005 5 8.21677e+00 2.77882e+00 740 2005 6 1.84034e+01 2.29835e+00 642 2005 7 2.04835e+01 2.37007e+00 1564 2005 8 2.27297e+01 9.77909e-01 2754 2005 9 2.11901e+01 7.87408e-01 2642 2005 10 1.75916e+01 1.90641e+00 859 2005 11 1.20644e+01 1.15709e+00 502 2005 12 5.73611e+00 2.68471e-01 9 2006 1 3.10036e+00 8.30575e-01 154 2006 2 1.95957e+00 7.74495e-01 184 2006 3 1.94327e+00 5.44711e-01 807 2006 4 3.50129e+00 6.06640e-01 744 2006 5 7.37890e+00 2.11124e+00 374 2006 6 1.54977e+01 2.42867e+00 960 2006 7 2.16039e+01 1.77027e+00 2968 2006 8 2.29433e+01 1.63299e+00 2479 2006 9 1.94755e+01 1.19309e+00 1530 2006 10 1.58523e+01 2.51020e+00 1461 2006 11 8.98707e+00 1.14675e+00 816 2006 12 6.35150e+00 9.90577e-01 561 2007 1 5.52743e+00 6.45648e-01 692 2007 2 3.02396e-01 6.07475e-01 48 2007 3 1.01692e+00 3.90460e-01 312 2007 4 2.72964e+00 8.11032e-01 643 2007 5 6.56455e+00 2.86042e-01 11 2007 6 1.74906e+01 3.17190e+00 1294 2007 7 1.92961e+01 1.46007e+00 1856 2007 8 2.18028e+01 1.01660e+00 3108 2007 9 2.04974e+01 1.59170e+00 2352 2007 10 1.74530e+01 1.94394e+00 1943 2007 11 1.18264e+01 1.64687e+00 764 2007 12 6.24725e+00 5.69655e-01 140 2008 1 2.99450e+00 1.61052e+00 50 2008 2 6.62125e-01 3.03203e-01 40 2008 3 1.44034e+00 4.43713e-01 758 2008 4 2.69665e+00 7.87488e-01 485 2008 5 6.00249e+00 9.83896e-01 413 2008 6 1.55532e+01 2.39411e+00 1091 2008 7 1.94981e+01 1.48783e+00 2576 2008 8 2.10088e+01 9.04506e-01 3441 2008 9 1.88241e+01 1.66349e+00 2105 2008 10 1.38029e+01 1.71896e+00 978 2008 11 1.01302e+01 1.91768e+00 339 2008 12 3.11536e+00 1.30573e+00 84 2009 1 1.34571e+00 5.90448e-01 35 2009 2 2.56093e-01 3.27362e-01 151 2009 3 1.21458e+00 3.77240e-01 660 2009 4 2.24281e+00 6.50921e-01 551 2009 5 7.79563e+00 2.33111e+00 134 2009 6 1.49311e+01 3.03364e+00 896 2009 7 1.86393e+01 1.18939e+00 2207 2009 8 2.09160e+01 7.11729e-01 2230 2009 9 1.84271e+01 8.53084e-01 2306 2009 10 1.35183e+01 1.63898e+00 584 2009 11 1.01224e+01 1.55234e+00 840 2009 12 7.29121e+00 8.73554e-01 132 2010 1 2.45330e+00 8.91180e-01 109 2010 2 1.69964e+00 7.52638e-01 98 2010 3 1.99318e+00 6.29501e-01 802 2010 4 3.89409e+00 8.05144e-01 569 2010 5 5.95736e+00 1.28495e+00 386 2010 6 1.78092e+01 2.84004e+00 1092 2010 7 2.30843e+01 1.41685e+00 3011 2010 8 2.36510e+01 1.01886e+00 4092 2010 9 1.82417e+01 7.54837e-01 1738 2010 10 1.57772e+01 7.09669e-01 2765 2010 11 1.26910e+01 1.69601e+00 953 2010 12 5.20535e+00 4.54296e-01 228 2011 1 9.99286e-01 4.99592e-02 7 2011 2 1.69828e+00 8.08218e-01 314 2011 3 1.34950e+00 5.60653e-01 952 2011 4 1.86626e+00 7.67578e-01 313 2011 5 5.88340e+00 1.39951e+00 191 2011 6 1.61691e+01 3.24519e+00 686 2011 7 2.19735e+01 1.21977e+00 2291 2011 8 2.20132e+01 1.20314e+00 2982 2011 9 1.83899e+01 1.46454e+00 651 2011 10 1.15700e+01 1.19858e+00 503 2011 11 1.10946e+01 1.18795e+00 1351 2011 12 7.64391e+00 3.36834e-01 372 2012 1 5.46701e+00 6.92209e-01 685 2012 2 2.99521e+00 9.25202e-01 619 2012 3 2.98773e+00 1.37371e+00 227 2012 4 5.67054e+00 5.86415e-01 1336 2012 5 9.74903e+00 1.84736e+00 547 2012 6 1.61891e+01 1.95034e+00 1075 2012 7 2.26021e+01 1.33113e+00 3212 2012 8 2.25119e+01 1.34051e+00 3070 2012 9 2.02316e+01 2.06463e+00 2389 2012 10 1.57453e+01 1.51409e+00 907 2012 11 8.04149e+00 1.18270e+00 517 2012 12 7.07977e+00 5.01398e-01 517 2013 1 5.12136e+00 3.79195e-01 180 2013 2 7.51045e-01 3.57898e-01 67 2013 3 1.33430e+00 7.56980e-01 634 2013 4 2.67207e+00 5.49724e-01 795 2013 5 7.65377e+00 1.86024e+00 448 2013 6 1.35612e+01 3.67030e+00 549 2013 7 2.20583e+01 2.32569e+00 2754 2013 8 1.99018e+01 1.59094e+00 2683 2013 9 1.87267e+01 1.76742e+00 1874 2013 10 1.64778e+01 1.88187e+00 1953 2013 11 1.05658e+01 1.34809e+00 607 2013 12 5.31167e+00 2.06640e-01 27 2014 1 1.25938e-01 3.56854e-01 192 2014 2 3.55294e-01 9.66493e-02 68 2014 3 3.85351e-01 2.55512e-01 271 2014 4 1.15796e+00 5.56732e-01 179 2014 5 3.04693e+00 4.53882e-01 187 2014 6 1.71406e+01 2.57980e+00 321 2014 7 1.95880e+01 1.28854e+00 1200 2014 8 1.86774e+01 2.75251e+00 1076 2014 9 1.82929e+01 2.37847e+00 2237 2014 10 1.45290e+01 1.08211e+00 1326 2014 11 1.09491e+01 1.07635e+00 29 2014 12 5.94455e+00 3.54503e-01 652 2015 1 7.83846e-01 1.08367e+00 130 2015 2 nan nan 0 2015 3 7.56909e-01 4.86133e-01 406 2015 4 2.36464e+00 4.08661e-01 168 2015 5 5.72474e+00 1.84383e+00 136 2015 6 1.63508e+01 1.54390e+00 486 2015 7 1.90569e+01 2.81961e+00 1527 2015 8 2.15576e+01 9.19128e-01 2506 2015 9 1.99386e+01 1.29427e+00 3061 2015 10 1.31131e+01 1.20159e+00 727 2015 11 1.13187e+01 8.72699e-01 1709 2015 12 8.58290e+00 7.89780e-01 616 2016 1 2.23617e+00 7.74693e-01 98 2016 2 2.71942e+00 7.38639e-01 86 2016 3 1.94455e+00 7.12001e-01 541 2016 4 3.13883e+00 5.27730e-01 467 2016 5 7.49200e+00 2.21833e+00 540 2016 6 1.57789e+01 1.59258e+00 670 2016 7 2.06171e+01 2.66767e+00 2005 2016 8 2.38936e+01 6.94322e-01 4217 2016 9 2.16895e+01 9.37494e-01 2707 2016 10 1.77247e+01 1.61862e+00 1269 2016 11 1.27803e+01 1.40298e+00 1403 2016 12 6.42833e+00 1.66310e+00 81 2017 1 4.39695e+00 1.73348e+00 118 2017 2 2.25963e+00 3.42115e-01 230 2017 3 2.46895e+00 3.17309e-01 544 2017 4 3.32042e+00 1.18368e+00 60 2017 5 7.71850e+00 2.42293e+00 672 2017 6 1.65332e+01 2.29321e+00 1488 2017 7 2.00207e+01 1.09502e+00 2423 2017 8 2.14434e+01 8.96380e-01 2767 2017 9 1.98869e+01 1.14120e+00 2782 2017 10 1.70616e+01 1.53357e+00 1264 2017 11 9.35583e+00 9.98390e-01 432 2017 12 7.71057e+00 1.13968e+00 671 2018 1 9.07679e-01 2.12399e-01 84 2018 2 1.03464e+00 2.44705e-01 138 2018 3 1.72429e+00 6.75572e-01 844 2018 4 2.55556e+00 5.63391e-01 808 2018 5 1.33350e+01 0.00000e+00 2 2018 6 1.57869e+01 2.97286e+00 610 2018 7 2.18843e+01 1.34972e+00 2901 2018 8 2.33651e+01 1.31411e+00 2785 2018 9 2.06973e+01 1.35553e+00 1701 2018 10 1.39591e+01 1.15866e+00 1074 2018 11 8.80412e+00 6.14631e-01 245 2018 12 6.04006e+00 3.32784e-01 179 2019 1 4.38067e+00 9.72803e-01 319 2019 2 5.86374e-01 1.12029e-01 91 2019 3 8.41200e-01 3.41299e-01 496 2019 4 2.50050e+00 6.94351e-01 595 2019 5 5.32696e+00 1.47845e+00 92 2019 6 1.25782e+01 2.36657e+00 600 2019 7 2.03423e+01 1.29571e+00 2307 2019 8 2.09988e+01 8.48328e-01 3960 2019 9 1.91992e+01 7.06429e-01 2225 2019 10 1.52610e+01 2.13118e+00 1634 2019 11 7.86382e+00 7.34281e-01 674 2019 12 5.04560e+00 4.28564e-01 375 2020 1 4.00551e+00 9.97697e-01 295 2020 2 2.36275e+00 4.78311e-01 1025 2020 3 2.26924e+00 3.30077e-01 1623 2020 4 3.57350e+00 6.03383e-01 1618 2020 5 8.58351e+00 3.70787e+00 2007 2020 6 1.69403e+01 2.61743e+00 2419 2020 7 2.28185e+01 1.49827e+00 3343 2020 8 2.22215e+01 1.32613e+00 1920 2020 9 1.85982e+01 1.00404e+00 3169 2020 10 1.54698e+01 1.50151e+00 2301 2020 11 1.02420e+01 1.15470e+00 1876 2020 12 6.89546e+00 4.96967e-01 638 2021 1 3.97591e+00 8.63822e-01 954 2021 2 1.71012e+00 8.62388e-01 558 2021 3 2.08463e+00 7.35366e-01 2272 2021 4 3.92418e+00 7.96204e-01 1915 2021 5 7.48852e+00 2.15922e+00 2067 2021 6 1.52950e+01 3.17133e+00 2464 2021 7 2.02592e+01 2.01556e+00 3266 2021 8 2.30494e+01 1.28698e+00 3673 2021 9 2.10641e+01 2.36182e+00 3736 2021 10 1.69207e+01 1.38972e+00 1807 2021 11 1.14546e+01 9.50896e-01 1127 2021 12 7.90111e+00 8.33870e-01 754 2022 1 4.50751e+00 1.01404e+00 440 2022 2 8.33789e-01 4.61660e-01 322 2022 3 1.31930e+00 5.73480e-01 922 2022 4 3.33088e+00 4.56072e-01 667 2022 5 8.51109e+00 2.21777e+00 519 2022 6 1.67729e+01 2.63830e+00 1862 2022 7 2.08549e+01 1.66105e+00 3849 2022 8 2.19657e+01 1.25077e+00 3753 2022 9 2.15107e+01 8.81624e-01 2501 2022 10 1.46748e+01 2.20318e+00 1706 2022 11 1.04015e+01 1.58475e+00 1959 2022 12 7.58992e+00 2.00809e-01 588 2023 1 3.72574e+00 8.63038e-01 156 2023 2 2.39584e+00 4.60696e-01 1165 2023 3 2.45215e+00 3.92844e-01 1360 2023 4 4.28965e+00 1.10709e+00 2121 2023 5 1.02192e+01 2.78950e+00 1874 2023 6 1.32021e+01 2.92301e+00 1471 2023 7 2.03051e+01 1.68033e+00 4213 2023 8 2.08029e+01 1.47727e+00 3491 2023 9 1.91153e+01 8.12962e-01 2638 2023 10 1.79428e+01 2.77858e+00 930 2023 11 1.15482e+01 1.04039e+00 2093 2023 12 7.57363e+00 7.15847e-01 989 2024 1 3.84950e+00 1.76202e-01 10 2024 2 3.34010e+00 6.68260e-01 1271 2024 3 3.47136e+00 3.99202e-01 1563 2024 4 1.21000e+00 2.15613e-01 9