YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 nan nan 0 2000 3 3.93251e+00 1.03796e+00 213 2000 4 6.15215e+00 7.26682e-01 100 2000 5 9.10139e+00 8.74418e-01 234 2000 6 1.52864e+01 1.39677e+00 175 2000 7 1.95334e+01 1.81188e+00 703 2000 8 2.01810e+01 4.49358e-01 235 2000 9 1.94686e+01 1.44780e+00 560 2000 10 1.44386e+01 1.17987e+00 397 2000 11 9.54433e+00 1.20280e+00 432 2000 12 6.33526e+00 1.07723e+00 391 2001 1 2.31439e+00 7.09196e-01 147 2001 2 2.41286e+00 5.26289e-01 376 2001 3 2.99744e+00 1.20916e+00 310 2001 4 5.72230e+00 1.56764e+00 400 2001 5 1.19605e+01 7.89907e-01 405 2001 6 1.53423e+01 2.03368e+00 317 2001 7 1.88375e+01 9.43091e-01 747 2001 8 1.90120e+01 9.94335e-01 233 2001 9 1.80844e+01 7.97021e-01 756 2001 10 1.29535e+01 1.00518e+00 398 2001 11 1.01956e+01 9.93813e-01 486 2001 12 7.77526e+00 1.47333e+00 512 2002 1 4.37187e+00 4.50512e-01 328 2002 2 3.64441e+00 2.17662e-01 144 2002 3 4.78399e+00 7.62622e-01 336 2002 4 7.44302e+00 1.41332e+00 377 2002 5 9.87398e+00 1.86534e+00 332 2002 6 1.47295e+01 2.17515e+00 344 2002 7 2.04840e+01 1.51516e+00 2141 2002 8 2.13779e+01 1.81872e+00 2258 2002 9 1.85326e+01 1.29066e+00 1441 2002 10 1.45334e+01 1.64760e+00 1834 2002 11 9.57337e+00 1.07937e+00 1426 2002 12 5.42546e+00 1.19965e+00 1789 2003 1 2.52539e+00 1.00057e+00 268 2003 2 6.25000e-01 0.00000e+00 3 2003 3 9.25577e-01 8.23740e-01 208 2003 4 5.79235e+00 2.33540e+00 510 2003 5 9.97065e+00 1.88164e+00 801 2003 6 1.55660e+01 3.04134e+00 855 2003 7 1.89985e+01 1.39771e+00 1526 2003 8 1.97252e+01 1.21080e+00 1688 2003 9 1.82073e+01 1.24552e+00 1956 2003 10 1.49928e+01 2.02856e+00 1805 2003 11 9.83821e+00 1.65141e+00 1552 2003 12 5.61204e+00 1.21476e+00 1419 2004 1 4.52562e+00 1.09991e+00 281 2004 2 1.54000e-01 2.56385e-02 30 2004 3 2.07452e+00 7.43533e-01 516 2004 4 5.36611e+00 1.56270e+00 1040 2004 5 1.12124e+01 1.85566e+00 733 2004 6 1.55941e+01 1.99075e+00 1442 2004 7 1.81448e+01 1.42796e+00 1673 2004 8 1.95394e+01 9.81831e-01 2206 2004 9 1.74034e+01 1.85839e+00 1714 2004 10 1.44354e+01 1.62527e+00 1372 2004 11 9.96322e+00 1.85294e+00 2067 2004 12 6.09662e+00 1.99954e+00 1182 2005 1 4.48493e+00 1.24788e+00 77 2005 2 1.33987e+00 5.34602e-01 313 2005 3 2.19400e+00 8.34878e-01 947 2005 4 7.00885e+00 1.60697e+00 1542 2005 5 9.18060e+00 1.69214e+00 833 2005 6 1.49065e+01 1.46995e+00 617 2005 7 2.07022e+01 2.17720e+00 2230 2005 8 2.03392e+01 1.86644e+00 2323 2005 9 1.90779e+01 1.52555e+00 2868 2005 10 1.34266e+01 2.16184e+00 1231 2005 11 1.02845e+01 8.16754e-01 1463 2005 12 5.21040e+00 1.90043e+00 1241 2006 1 3.67219e+00 7.93222e-01 1092 2006 2 2.92507e+00 1.17953e+00 683 2006 3 2.35770e+00 1.09834e+00 581 2006 4 6.96052e+00 1.59734e+00 1479 2006 5 1.03399e+01 1.39230e+00 1065 2006 6 1.66061e+01 2.05557e+00 873 2006 7 1.98912e+01 1.11121e+00 1872 2006 8 2.03114e+01 1.73144e+00 2997 2006 9 1.75960e+01 7.55998e-01 2130 2006 10 1.39547e+01 1.61433e+00 1951 2006 11 1.10956e+01 7.25674e-01 812 2006 12 8.03752e+00 1.47578e+00 1860 2007 1 5.46031e+00 1.65017e+00 824 2007 2 1.20398e+00 3.61994e-01 344 2007 3 2.86628e+00 1.67040e+00 724 2007 4 5.24626e+00 1.69407e+00 1010 2007 5 1.07260e+01 2.55531e+00 1649 2007 6 1.66723e+01 2.37044e+00 1538 2007 7 2.00067e+01 1.65616e+00 1948 2007 8 1.98086e+01 1.26903e+00 2581 2007 9 1.85337e+01 7.72547e-01 2031 2007 10 1.54203e+01 2.17511e+00 1905 2007 11 1.07565e+01 1.73209e+00 1076 2007 12 5.58378e+00 1.35987e+00 1043 2008 1 3.47455e+00 1.07130e+00 1065 2008 2 2.58148e+00 8.40305e-01 763 2008 3 3.81330e+00 4.56174e-01 1339 2008 4 7.96488e+00 1.88266e+00 1387 2008 5 1.09590e+01 1.89894e+00 1456 2008 6 1.68628e+01 2.47452e+00 1730 2008 7 1.98197e+01 1.65546e+00 1931 2008 8 1.99392e+01 1.18860e+00 3606 2008 9 1.82114e+01 1.95551e+00 1871 2008 10 1.42828e+01 1.97221e+00 1848 2008 11 1.01717e+01 1.68492e+00 1380 2008 12 6.26818e+00 1.26557e+00 1367 2009 1 2.13788e+00 8.89087e-01 810 2009 2 1.54347e+00 4.00114e-01 556 2009 3 2.64806e+00 1.18550e+00 719 2009 4 6.14948e+00 1.81637e+00 1338 2009 5 1.03514e+01 1.41814e+00 702 2009 6 1.47293e+01 1.37822e+00 670 2009 7 1.83295e+01 1.31428e+00 2111 2009 8 2.13419e+01 1.72132e+00 2166 2009 9 1.76057e+01 8.20196e-01 2059 2009 10 1.38799e+01 1.62800e+00 1700 2009 11 1.10051e+01 7.60380e-01 1083 2009 12 7.15987e+00 2.41147e+00 1575 2010 1 1.81553e+00 4.83749e-01 367 2010 2 1.77132e+00 4.95423e-01 257 2010 3 3.81191e+00 1.15781e+00 1037 2010 4 8.45533e+00 1.12638e+00 1199 2010 5 1.29434e+01 2.33080e+00 1511 2010 6 1.76585e+01 2.16506e+00 1228 2010 7 2.10753e+01 1.85846e+00 3138 2010 8 2.02655e+01 2.13232e+00 2209 2010 9 1.84351e+01 1.15544e+00 2168 2010 10 1.46612e+01 1.56910e+00 2176 2010 11 9.55297e+00 1.87298e+00 1189 2010 12 5.73190e+00 1.88383e+00 1507 2011 1 2.12454e+00 1.09359e+00 624 2011 2 1.76921e+00 6.86621e-01 648 2011 3 3.57161e+00 7.92072e-01 1398 2011 4 5.66451e+00 9.32629e-01 925 2011 5 1.07932e+01 2.59520e+00 933 2011 6 1.64492e+01 1.55535e+00 1745 2011 7 2.08060e+01 1.70000e+00 2608 2011 8 1.98904e+01 1.73315e+00 1740 2011 9 1.72581e+01 1.04440e+00 1476 2011 10 1.56827e+01 1.72504e+00 1939 2011 11 1.06043e+01 1.17961e+00 1124 2011 12 7.63575e+00 2.10774e+00 1412 2012 1 5.31714e+00 8.30800e-01 1274 2012 2 3.73460e+00 6.29294e-01 1356 2012 3 5.06672e+00 1.21214e+00 450 2012 4 8.57301e+00 1.42102e+00 2174 2012 5 1.30659e+01 2.29801e+00 819 2012 6 1.69103e+01 2.80612e+00 1345 2012 7 2.15188e+01 1.67374e+00 2388 2012 8 2.12789e+01 1.57077e+00 2223 2012 9 1.81247e+01 1.12051e+00 2363 2012 10 1.44908e+01 9.10489e-01 2008 2012 11 9.66996e+00 1.37894e+00 1511 2012 12 6.62795e+00 1.25975e+00 909 2013 1 4.08508e+00 1.12820e+00 905 2013 2 2.19286e+00 4.47133e-01 681 2013 3 3.66599e+00 6.75953e-01 809 2013 4 6.87793e+00 2.27009e+00 1676 2013 5 1.19679e+01 2.00374e+00 1525 2013 6 1.64437e+01 2.71913e+00 1628 2013 7 2.21121e+01 2.07807e+00 1622 2013 8 2.16043e+01 1.16229e+00 2187 2013 9 1.79033e+01 1.33657e+00 2171 2013 10 1.49602e+01 1.38740e+00 2235 2013 11 1.02524e+01 1.86220e+00 1376 2013 12 5.30457e+00 1.02507e+00 1019 2014 1 2.52476e+00 1.08229e+00 663 2014 2 1.34612e+00 9.21230e-01 392 2014 3 2.16027e+00 5.12020e-01 527 2014 4 5.83507e+00 1.28424e+00 1445 2014 5 1.11602e+01 2.17616e+00 1356 2014 6 1.66851e+01 2.08584e+00 2403 2014 7 1.89880e+01 1.22192e+00 2052 2014 8 1.86902e+01 1.30706e+00 2735 2014 9 1.93019e+01 1.79438e+00 2255 2014 10 1.59075e+01 8.87360e-01 1614 2014 11 1.08227e+01 1.06548e+00 1295 2014 12 6.94362e+00 1.36746e+00 816 2015 1 3.64983e+00 1.88825e+00 888 2015 2 nan nan 0 2015 3 1.26012e+00 5.17352e-01 302 2015 4 5.25393e+00 1.49716e+00 909 2015 5 1.22083e+01 2.08804e+00 966 2015 6 1.51680e+01 1.95871e+00 675 2015 7 2.05133e+01 2.28489e+00 2494 2015 8 2.17147e+01 1.71217e+00 3236 2015 9 1.95260e+01 1.46406e+00 2718 2015 10 1.42819e+01 1.80529e+00 1999 2015 11 1.16168e+01 1.54758e+00 1512 2015 12 8.45797e+00 1.37678e+00 781 2016 1 6.00681e+00 1.65921e+00 1213 2016 2 3.35841e+00 9.06320e-01 747 2016 3 5.28752e+00 1.00428e+00 797 2016 4 7.32551e+00 1.31563e+00 1979 2016 5 1.10583e+01 1.99964e+00 1083 2016 6 1.69021e+01 2.38494e+00 2245 2016 7 2.06543e+01 1.84526e+00 2563 2016 8 2.07467e+01 1.39789e+00 3514 2016 9 1.94856e+01 1.17266e+00 1669 2016 10 1.59984e+01 9.21024e-01 1820 2016 11 1.12640e+01 1.51285e+00 1361 2016 12 6.97595e+00 1.38183e+00 1677 2017 1 4.53957e+00 1.01174e+00 1063 2017 2 3.27355e+00 1.11358e+00 705 2017 3 3.30656e+00 5.67131e-01 791 2017 4 6.63664e+00 1.71546e+00 779 2017 5 1.03198e+01 1.88378e+00 1035 2017 6 1.59701e+01 2.69507e+00 1091 2017 7 1.91023e+01 2.00518e+00 1748 2017 8 1.98951e+01 1.73574e+00 2970 2017 9 1.78376e+01 9.78999e-01 1719 2017 10 1.61076e+01 1.30897e+00 2045 2017 11 1.02520e+01 1.59522e+00 2259 2017 12 5.62031e+00 1.34606e+00 1041 2018 1 2.20244e+00 4.23578e-01 299 2018 2 2.47221e+00 9.69309e-01 428 2018 3 3.79160e+00 2.90199e-01 831 2018 4 5.23610e+00 1.31423e+00 1085 2018 5 1.13151e+01 2.49579e+00 473 2018 6 1.66504e+01 2.73859e+00 1075 2018 7 2.02268e+01 1.24328e+00 2099 2018 8 2.13506e+01 1.74438e+00 2194 2018 9 1.99110e+01 1.88478e+00 2107 2018 10 1.52291e+01 2.01906e+00 1612 2018 11 1.12665e+01 2.01783e+00 1401 2018 12 5.04728e+00 1.44680e+00 1303 2019 1 3.04385e+00 1.25725e+00 1040 2019 2 2.05327e+00 5.93597e-01 563 2019 3 2.96146e+00 9.83849e-01 1070 2019 4 6.44479e+00 1.89721e+00 1259 2019 5 1.10184e+01 1.68549e+00 796 2019 6 1.60486e+01 1.50058e+00 1117 2019 7 2.16518e+01 2.04194e+00 3020 2019 8 2.04896e+01 1.79412e+00 2254 2019 9 1.81136e+01 1.05866e+00 3196 2019 10 1.42892e+01 1.07054e+00 1677 2019 11 1.09434e+01 2.18311e+00 1909 2019 12 5.18674e+00 1.09828e+00 1424 2020 1 3.81320e+00 7.79490e-01 1509 2020 2 4.06123e+00 4.47838e-01 1628 2020 3 5.27689e+00 9.26347e-01 1622 2020 4 6.64315e+00 6.88087e-01 1512 2020 5 1.09211e+01 2.19803e+00 2407 2020 6 1.76061e+01 2.38640e+00 1988 2020 7 2.11387e+01 1.98463e+00 1694 2020 8 2.08062e+01 1.64664e+00 1183 2020 9 1.82952e+01 2.02654e+00 2900 2020 10 1.55801e+01 1.27168e+00 2633 2020 11 1.17160e+01 1.36123e+00 2339 2020 12 7.58887e+00 1.63827e+00 1720 2021 1 4.10167e+00 8.07925e-01 1443 2021 2 2.10299e+00 7.76677e-01 1154 2021 3 3.80009e+00 1.36236e+00 2025 2021 4 7.48788e+00 1.29488e+00 2106 2021 5 1.24519e+01 1.78928e+00 2531 2021 6 1.84096e+01 2.38592e+00 2177 2021 7 2.08581e+01 1.61136e+00 2271 2021 8 2.17528e+01 1.65660e+00 1672 2021 9 1.98337e+01 6.46943e-01 2473 2021 10 1.71217e+01 1.10706e+00 1811 2021 11 1.19537e+01 1.56193e+00 2261 2021 12 7.84657e+00 8.72389e-01 1418 2022 1 3.52307e+00 1.71463e+00 982 2022 2 2.83664e+00 9.67347e-01 1424 2022 3 4.53429e+00 1.27908e+00 1603 2022 4 8.25414e+00 1.04774e+00 1088 2022 5 1.29384e+01 1.98527e+00 1328 2022 6 1.77802e+01 1.68422e+00 2810 2022 7 2.03712e+01 2.10763e+00 2858 2022 8 2.12253e+01 1.83191e+00 2227 2022 9 2.00001e+01 1.79291e+00 2544 2022 10 1.55983e+01 6.32835e-01 2237 2022 11 1.27102e+01 1.98581e+00 2961 2022 12 7.56960e+00 1.78882e+00 1913 2023 1 5.34735e+00 5.63459e-01 1066 2023 2 4.08577e+00 8.06616e-01 1101 2023 3 4.58680e+00 1.10466e+00 2315 2023 4 8.14928e+00 1.60034e+00 1687 2023 5 1.27768e+01 2.17560e+00 3949 2023 6 1.71616e+01 2.32394e+00 1797 2023 7 2.18566e+01 1.70287e+00 1998 2023 8 1.93462e+01 1.23428e+00 2210 2023 9 1.92385e+01 1.77304e+00 2637 2023 10 1.66126e+01 1.20844e+00 2171 2023 11 1.12944e+01 1.73656e+00 2410 2023 12 7.84469e+00 6.99609e-01 1572 2024 1 5.45899e+00 1.03664e+00 2245 2024 2 2.98182e+00 3.92628e-01 1875 2024 3 5.17132e+00 5.86842e-01 1280 2024 4 5.73719e+00 2.72796e-01 128