YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.51473e+01 7.96575e-01 226 2000 3 2.57244e+01 1.06020e+00 452 2000 4 2.58042e+01 8.37735e-01 574 2000 5 2.71073e+01 6.60453e-01 456 2000 6 2.69938e+01 9.26489e-01 226 2000 7 2.71333e+01 9.85857e-01 408 2000 8 2.83450e+01 7.05284e-01 324 2000 9 2.86413e+01 8.37318e-01 750 2000 10 2.89208e+01 8.65224e-01 720 2000 11 2.80646e+01 8.45680e-01 712 2000 12 2.71512e+01 8.23347e-01 737 2001 1 2.60177e+01 5.75049e-01 422 2001 2 2.56579e+01 6.23379e-01 381 2001 3 2.56439e+01 5.47846e-01 696 2001 4 2.64800e+01 8.04912e-01 470 2001 5 2.69667e+01 8.45004e-01 553 2001 6 2.72752e+01 8.01794e-01 251 2001 7 2.76514e+01 1.05026e+00 349 2001 8 2.82676e+01 5.23314e-01 582 2001 9 2.86030e+01 7.14220e-01 755 2001 10 2.85192e+01 9.32811e-01 548 2001 11 2.80703e+01 1.09036e+00 445 2001 12 2.67961e+01 7.63129e-01 393 2002 1 2.64550e+01 3.85925e-01 746 2002 2 2.58063e+01 8.95995e-01 478 2002 3 2.57783e+01 6.90413e-01 684 2002 4 2.63646e+01 3.43686e-01 256 2002 5 2.70251e+01 7.54561e-01 580 2002 6 2.65006e+01 1.04920e+00 280 2002 7 2.73810e+01 7.60914e-01 2135 2002 8 2.82226e+01 8.15690e-01 1493 2002 9 2.84152e+01 9.17703e-01 1967 2002 10 2.85660e+01 5.59670e-01 2442 2002 11 2.83783e+01 6.29371e-01 3476 2002 12 2.72580e+01 5.92825e-01 2934 2003 1 2.67536e+01 5.22947e-01 3026 2003 2 2.62716e+01 5.77085e-01 2622 2003 3 2.65645e+01 6.66955e-01 3098 2003 4 2.70163e+01 8.08019e-01 1639 2003 5 2.69053e+01 7.05859e-01 2131 2003 6 2.71093e+01 7.69912e-01 1283 2003 7 2.70507e+01 7.74844e-01 1575 2003 8 2.78137e+01 6.94337e-01 2158 2003 9 2.84698e+01 7.53130e-01 1795 2003 10 2.89725e+01 8.98916e-01 2270 2003 11 2.79627e+01 1.12051e+00 1625 2003 12 2.69466e+01 8.15129e-01 2054 2004 1 2.63758e+01 6.86572e-01 2537 2004 2 2.60940e+01 6.25684e-01 2634 2004 3 2.58626e+01 6.75530e-01 2246 2004 4 2.66599e+01 8.52423e-01 2534 2004 5 2.63964e+01 1.11018e+00 1137 2004 6 2.67728e+01 8.92748e-01 1413 2004 7 2.72574e+01 9.07995e-01 1604 2004 8 2.80006e+01 8.21065e-01 2103 2004 9 2.83522e+01 6.18658e-01 1173 2004 10 2.85043e+01 7.53949e-01 2303 2004 11 2.72478e+01 8.17686e-01 1584 2004 12 2.64928e+01 6.33121e-01 2248 2005 1 2.54246e+01 7.08703e-01 1470 2005 2 2.52230e+01 8.26104e-01 1980 2005 3 2.62593e+01 7.34364e-01 3280 2005 4 2.70443e+01 9.59474e-01 2077 2005 5 2.76477e+01 1.09173e+00 1396 2005 6 2.80481e+01 1.18021e+00 1424 2005 7 2.79393e+01 9.70352e-01 1199 2005 8 2.85377e+01 1.07407e+00 1531 2005 9 2.93105e+01 8.36975e-01 2244 2005 10 2.84328e+01 1.10198e+00 1239 2005 11 2.79926e+01 7.08523e-01 2048 2005 12 2.72087e+01 7.06256e-01 2581 2006 1 2.63134e+01 6.38133e-01 1902 2006 2 2.60523e+01 7.03688e-01 2514 2006 3 2.60579e+01 7.12601e-01 2503 2006 4 2.67456e+01 9.34839e-01 1813 2006 5 2.75054e+01 7.01587e-01 1765 2006 6 2.78447e+01 8.19801e-01 1801 2006 7 2.78087e+01 7.35730e-01 1296 2006 8 2.77878e+01 8.94511e-01 1471 2006 9 2.88495e+01 8.72131e-01 2444 2006 10 2.90094e+01 9.05066e-01 2264 2006 11 2.86457e+01 8.45847e-01 2817 2006 12 2.75112e+01 7.39817e-01 2798 2007 1 2.66286e+01 5.19372e-01 2549 2007 2 2.64713e+01 5.75480e-01 3033 2007 3 2.61764e+01 9.00436e-01 1889 2007 4 2.66125e+01 7.44607e-01 1739 2007 5 2.78673e+01 9.42587e-01 1809 2007 6 2.76210e+01 7.57988e-01 1716 2007 7 2.75426e+01 7.81015e-01 1308 2007 8 2.81718e+01 7.51239e-01 1812 2007 9 2.85678e+01 7.67454e-01 2325 2007 10 2.87165e+01 8.23877e-01 1634 2007 11 2.79246e+01 7.75681e-01 1867 2007 12 2.67638e+01 7.15719e-01 2694 2008 1 2.62585e+01 5.05860e-01 2692 2008 2 2.56568e+01 7.05844e-01 2495 2008 3 2.57226e+01 6.46645e-01 2875 2008 4 2.60516e+01 7.54205e-01 2669 2008 5 2.70302e+01 8.07500e-01 2047 2008 6 2.74661e+01 9.83510e-01 1549 2008 7 2.74915e+01 8.40254e-01 1970 2008 8 2.83764e+01 7.87662e-01 1796 2008 9 2.83937e+01 8.77324e-01 1419 2008 10 2.83736e+01 7.76001e-01 2591 2008 11 2.80987e+01 8.86528e-01 2081 2008 12 2.65755e+01 6.27472e-01 1929 2009 1 2.57798e+01 6.26153e-01 2771 2009 2 2.57992e+01 5.26707e-01 1713 2009 3 2.54653e+01 6.09826e-01 1545 2009 4 2.58536e+01 7.75123e-01 2534 2009 5 2.62540e+01 9.11617e-01 1131 2009 6 2.70389e+01 8.54392e-01 1492 2009 7 2.74942e+01 1.02328e+00 1491 2009 8 2.80172e+01 7.97042e-01 1735 2009 9 2.87613e+01 9.48592e-01 1974 2009 10 2.87154e+01 7.27007e-01 2398 2009 11 2.83540e+01 7.70041e-01 2670 2009 12 2.75621e+01 7.57232e-01 2470 2010 1 2.69171e+01 7.28157e-01 2142 2010 2 2.70102e+01 6.33810e-01 2559 2010 3 2.72051e+01 7.25722e-01 2762 2010 4 2.69118e+01 8.54967e-01 1694 2010 5 2.75616e+01 8.90036e-01 1029 2010 6 2.80049e+01 7.45850e-01 1339 2010 7 2.76648e+01 1.15523e+00 1341 2010 8 2.86791e+01 1.00890e+00 1897 2010 9 2.87770e+01 6.41454e-01 1430 2010 10 2.89205e+01 6.95799e-01 1871 2010 11 2.71558e+01 1.22295e+00 1158 2010 12 2.70928e+01 9.65875e-01 1455 2011 1 2.57100e+01 8.76689e-01 2321 2011 2 2.59019e+01 4.18625e-01 1916 2011 3 2.56635e+01 8.10362e-01 2574 2011 4 2.62844e+01 7.22652e-01 2854 2011 5 2.68020e+01 1.04035e+00 990 2011 6 2.77205e+01 9.18235e-01 954 2011 7 2.80210e+01 1.04646e+00 1433 2011 8 2.78658e+01 7.33773e-01 2034 2011 9 2.83807e+01 1.02272e+00 1888 2011 10 2.88292e+01 8.72417e-01 2412 2011 11 2.78864e+01 8.87402e-01 1952 2011 12 2.72122e+01 7.28570e-01 1812 2012 1 2.63812e+01 7.00005e-01 2651 2012 2 2.57708e+01 5.91708e-01 2226 2012 3 2.57365e+01 6.87730e-01 2208 2012 4 2.62150e+01 9.32490e-01 1688 2012 5 2.66005e+01 9.75397e-01 1957 2012 6 2.73830e+01 6.39842e-01 2370 2012 7 2.75169e+01 8.02776e-01 1627 2012 8 2.78420e+01 8.22258e-01 1359 2012 9 2.87413e+01 7.35863e-01 2431 2012 10 2.88470e+01 1.09046e+00 1457 2012 11 2.86542e+01 9.74717e-01 2434 2012 12 2.75608e+01 7.48255e-01 1685 2013 1 2.64736e+01 5.87261e-01 1686 2013 2 2.59257e+01 6.64457e-01 2533 2013 3 2.65166e+01 8.65242e-01 1992 2013 4 2.66053e+01 6.79345e-01 2848 2013 5 2.70109e+01 9.17424e-01 1864 2013 6 2.63897e+01 1.12054e+00 858 2013 7 2.74037e+01 8.17171e-01 1761 2013 8 2.80912e+01 7.05788e-01 2002 2013 9 2.89068e+01 9.50589e-01 1706 2013 10 2.90575e+01 9.77740e-01 1811 2013 11 2.82281e+01 6.61211e-01 2277 2013 12 2.67887e+01 6.64046e-01 2209 2014 1 2.62846e+01 6.01095e-01 3193 2014 2 2.61925e+01 5.86066e-01 2809 2014 3 2.64903e+01 7.19681e-01 3725 2014 4 2.67022e+01 7.74050e-01 2866 2014 5 2.69789e+01 8.63857e-01 1947 2014 6 2.73771e+01 1.12116e+00 1435 2014 7 2.73144e+01 6.49843e-01 1722 2014 8 2.77299e+01 7.88244e-01 1556 2014 9 2.85756e+01 1.08132e+00 1740 2014 10 2.89686e+01 8.09380e-01 2273 2014 11 2.84130e+01 8.04150e-01 2416 2014 12 2.71438e+01 7.66470e-01 2562 2015 1 2.66094e+01 6.11902e-01 2517 2015 2 2.66455e+01 6.08292e-01 2079 2015 3 2.64486e+01 5.56096e-01 2592 2015 4 2.66671e+01 7.21241e-01 3345 2015 5 2.69741e+01 9.07572e-01 1727 2015 6 2.71694e+01 8.27771e-01 1661 2015 7 2.71827e+01 8.01174e-01 2113 2015 8 2.81501e+01 6.34219e-01 2154 2015 9 2.88501e+01 1.02107e+00 2445 2015 10 2.91870e+01 8.41392e-01 2147 2015 11 2.81807e+01 9.49323e-01 1527 2015 12 2.74510e+01 7.19294e-01 2259 2016 1 2.67633e+01 6.25650e-01 2299 2016 2 2.67367e+01 5.27629e-01 2669 2016 3 2.65112e+01 7.43586e-01 2510 2016 4 2.71030e+01 8.95599e-01 1966 2016 5 2.73041e+01 1.00475e+00 1578 2016 6 2.76918e+01 5.89036e-01 1492 2016 7 2.77942e+01 7.50784e-01 1791 2016 8 2.82419e+01 6.92167e-01 1947 2016 9 2.90129e+01 7.66277e-01 2740 2016 10 2.88673e+01 1.29425e+00 1775 2016 11 2.82657e+01 7.83874e-01 1030 2016 12 2.73739e+01 9.47187e-01 2161 2017 1 2.66240e+01 7.16213e-01 2124 2017 2 2.63963e+01 7.52549e-01 2362 2017 3 2.63230e+01 5.90570e-01 2286 2017 4 2.67794e+01 6.87641e-01 1803 2017 5 2.67711e+01 1.01291e+00 1712 2017 6 2.74244e+01 8.45310e-01 2260 2017 7 2.80748e+01 6.97324e-01 2135 2017 8 2.83030e+01 7.82178e-01 1978 2017 9 2.84256e+01 1.39471e+00 966 2017 10 2.81554e+01 1.13462e+00 1564 2017 11 2.79566e+01 9.94210e-01 1843 2017 12 2.74830e+01 8.44472e-01 2541 2018 1 2.65762e+01 8.29944e-01 1776 2018 2 2.58763e+01 6.90593e-01 1559 2018 3 2.61788e+01 8.17091e-01 2770 2018 4 2.63148e+01 8.87324e-01 2523 2018 5 2.66055e+01 8.72245e-01 2726 2018 6 2.72658e+01 8.70493e-01 1653 2018 7 2.74070e+01 6.10963e-01 980 2018 8 2.82635e+01 5.35316e-01 1905 2018 9 2.83850e+01 8.53153e-01 2277 2018 10 2.86492e+01 9.25247e-01 1861 2018 11 2.79616e+01 6.40681e-01 2746 2018 12 2.72615e+01 7.08240e-01 2806 2019 1 2.64146e+01 6.30996e-01 2777 2019 2 2.63224e+01 6.25960e-01 2196 2019 3 2.62792e+01 6.45986e-01 3318 2019 4 2.66051e+01 5.93259e-01 3003 2019 5 2.72749e+01 8.98776e-01 1941 2019 6 2.74279e+01 7.53366e-01 1882 2019 7 2.78759e+01 8.34890e-01 2298 2019 8 2.82180e+01 6.51580e-01 2598 2019 9 2.92891e+01 8.11889e-01 1932 2019 10 2.91333e+01 8.02842e-01 2538 2019 11 2.87551e+01 6.66095e-01 3189 2019 12 2.79228e+01 7.16922e-01 2832 2020 1 2.70401e+01 7.45549e-01 1941 2020 2 2.65561e+01 5.59821e-01 2565 2020 3 2.63521e+01 7.92381e-01 1667 2020 4 2.70293e+01 6.78143e-01 2999 2020 5 2.77345e+01 6.87708e-01 2564 2020 6 2.81271e+01 8.21591e-01 2382 2020 7 2.82862e+01 7.75816e-01 1758 2020 8 2.85943e+01 5.98629e-01 1932 2020 9 2.93532e+01 8.33195e-01 2289 2020 10 2.90705e+01 8.09159e-01 1915 2020 11 2.81102e+01 7.75688e-01 1519 2020 12 2.74154e+01 6.54779e-01 2816 2021 1 2.65793e+01 7.06303e-01 2335 2021 2 2.63013e+01 7.05360e-01 2602 2021 3 2.62758e+01 6.81250e-01 2649 2021 4 2.65247e+01 6.83427e-01 2155 2021 5 2.68108e+01 7.00382e-01 1963 2021 6 2.73163e+01 1.07179e+00 1389 2021 7 2.75589e+01 6.48676e-01 1925 2021 8 2.80765e+01 7.22809e-01 1349 2021 9 2.89933e+01 9.47687e-01 2893 2021 10 2.92651e+01 9.36280e-01 2688 2021 11 2.86314e+01 7.78716e-01 2635 2021 12 2.74939e+01 5.54345e-01 2222 2022 1 2.68603e+01 5.25781e-01 3429 2022 2 2.65409e+01 5.68423e-01 2053 2022 3 2.63523e+01 7.34896e-01 2352 2022 4 2.62485e+01 1.03754e+00 870 2022 5 2.72029e+01 5.59454e-01 2347 2022 6 2.78549e+01 6.95650e-01 2031 2022 7 2.77612e+01 5.83729e-01 1323 2022 8 2.83477e+01 7.44216e-01 2014 2022 9 2.87645e+01 9.85423e-01 2197 2022 10 2.87239e+01 7.62450e-01 2157 2022 11 2.77583e+01 7.29967e-01 2727 2022 12 2.69393e+01 5.98952e-01 3009 2023 1 2.67667e+01 6.09516e-01 2807 2023 2 2.59581e+01 7.57599e-01 2532 2023 3 2.60428e+01 6.12119e-01 2793 2023 4 2.64986e+01 7.66577e-01 2768 2023 5 2.82770e+01 8.36024e-01 2562 2023 6 2.86487e+01 6.01801e-01 2085 2023 7 2.84832e+01 9.38411e-01 1479 2023 8 2.90837e+01 6.74612e-01 1618 2023 9 2.96364e+01 8.50511e-01 2376 2023 10 2.97062e+01 1.00451e+00 2139 2023 11 2.85525e+01 7.53718e-01 1906 2023 12 2.78799e+01 1.01992e+00 2337 2024 1 2.70167e+01 6.21608e-01 2877 2024 2 2.66855e+01 8.84616e-01 2113 2024 3 2.70011e+01 8.13538e-01 2838 2024 4 2.67610e+01 3.70451e-01 184