YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.38288e+01 3.54878e-01 78 2000 3 2.45072e+01 3.87293e-01 557 2000 4 2.51629e+01 4.99990e-01 563 2000 5 2.58074e+01 2.10277e+00 504 2000 6 2.81278e+01 8.45127e-01 525 2000 7 2.94979e+01 8.76505e-01 512 2000 8 2.95212e+01 7.42216e-01 556 2000 9 2.98082e+01 6.84463e-01 341 2000 10 2.82447e+01 1.45514e+00 240 2000 11 2.51738e+01 1.01939e+00 510 2000 12 2.41325e+01 6.70608e-01 308 2001 1 2.25232e+01 7.05894e-01 434 2001 2 2.37578e+01 7.08610e-01 522 2001 3 2.36328e+01 3.35215e-01 483 2001 4 2.51246e+01 8.07351e-01 866 2001 5 2.56088e+01 1.12801e+00 520 2001 6 2.84122e+01 1.09412e+00 386 2001 7 2.89117e+01 1.60011e+00 552 2001 8 2.92873e+01 6.89355e-01 517 2001 9 2.81481e+01 9.17775e-01 229 2001 10 2.66772e+01 1.55910e+00 263 2001 11 2.54313e+01 5.83604e-01 245 2001 12 2.47512e+01 9.66638e-01 378 2002 1 2.30921e+01 6.10110e-01 349 2002 2 2.32721e+01 4.79209e-01 250 2002 3 2.50063e+01 1.23065e+00 387 2002 4 2.67385e+01 6.47482e-01 512 2002 5 2.72543e+01 1.37212e+00 529 2002 6 2.68581e+01 1.10480e+00 50 2002 7 2.89404e+01 9.34847e-01 1792 2002 8 2.97358e+01 8.47925e-01 1787 2002 9 2.89564e+01 8.80001e-01 1781 2002 10 2.82016e+01 6.52362e-01 3243 2002 11 2.67132e+01 1.23207e+00 1928 2002 12 2.36038e+01 1.17874e+00 1732 2003 1 2.22464e+01 1.08877e+00 1877 2003 2 2.25271e+01 9.34166e-01 2544 2003 3 2.52290e+01 8.40418e-01 2055 2003 4 2.48650e+01 1.02185e+00 2031 2003 5 2.74447e+01 1.03278e+00 2741 2003 6 2.81488e+01 1.11580e+00 1130 2003 7 2.88235e+01 9.56389e-01 1986 2003 8 2.95879e+01 1.00211e+00 1510 2003 9 2.91135e+01 6.20700e-01 1837 2003 10 2.80825e+01 9.86927e-01 2764 2003 11 2.58124e+01 9.86007e-01 1701 2003 12 2.38569e+01 1.16065e+00 1106 2004 1 2.35632e+01 1.12103e+00 2159 2004 2 2.32269e+01 9.70496e-01 1702 2004 3 2.40253e+01 1.17158e+00 1715 2004 4 2.40280e+01 7.71970e-01 2478 2004 5 2.61840e+01 1.08037e+00 2904 2004 6 2.89277e+01 8.14388e-01 2802 2004 7 2.97489e+01 1.17486e+00 2487 2004 8 3.02969e+01 5.97210e-01 1211 2004 9 2.84355e+01 1.14497e+00 1722 2004 10 2.72401e+01 8.81963e-01 2065 2004 11 2.56868e+01 1.04958e+00 2029 2004 12 2.39866e+01 1.57569e+00 1253 2005 1 2.32798e+01 9.20640e-01 2458 2005 2 2.28524e+01 9.72781e-01 1426 2005 3 2.37262e+01 9.65253e-01 1979 2005 4 2.39968e+01 8.28366e-01 2812 2005 5 2.59352e+01 1.20476e+00 2383 2005 6 2.81259e+01 9.40794e-01 1172 2005 7 2.91373e+01 1.06419e+00 2910 2005 8 3.02646e+01 1.32960e+00 2457 2005 9 2.92660e+01 1.03103e+00 2091 2005 10 2.71898e+01 1.43544e+00 1377 2005 11 2.49690e+01 8.24497e-01 2568 2005 12 2.34937e+01 1.13339e+00 2259 2006 1 2.26465e+01 7.05678e-01 1889 2006 2 2.26861e+01 9.60194e-01 2393 2006 3 2.40558e+01 9.35661e-01 3172 2006 4 2.54925e+01 9.91431e-01 3023 2006 5 2.66889e+01 8.08395e-01 2623 2006 6 2.81986e+01 8.66084e-01 2261 2006 7 2.88431e+01 9.41299e-01 1444 2006 8 2.96665e+01 8.61551e-01 1989 2006 9 2.96412e+01 8.43937e-01 2060 2006 10 2.82673e+01 9.86295e-01 2394 2006 11 2.53041e+01 1.19652e+00 1302 2006 12 2.46570e+01 1.16963e+00 1046 2007 1 2.39961e+01 1.14135e+00 1832 2007 2 2.33000e+01 9.02202e-01 1704 2007 3 2.37326e+01 8.21346e-01 1796 2007 4 2.46592e+01 9.63272e-01 3041 2007 5 2.62903e+01 8.92937e-01 2783 2007 6 2.79839e+01 1.20297e+00 1718 2007 7 2.99231e+01 7.86109e-01 2353 2007 8 3.00440e+01 6.61837e-01 2718 2007 9 2.97389e+01 1.00234e+00 1428 2007 10 2.77019e+01 9.84080e-01 1331 2007 11 2.57302e+01 8.71505e-01 2550 2007 12 2.46191e+01 8.58202e-01 2551 2008 1 2.33574e+01 1.02623e+00 1858 2008 2 2.37530e+01 8.98866e-01 2057 2008 3 2.35690e+01 8.43518e-01 1771 2008 4 2.50915e+01 9.01695e-01 3056 2008 5 2.68146e+01 1.11289e+00 3361 2008 6 2.79382e+01 8.37644e-01 2288 2008 7 2.91817e+01 1.21407e+00 2030 2008 8 2.97847e+01 1.14547e+00 2120 2008 9 2.83722e+01 7.11103e-01 2150 2008 10 2.76172e+01 1.41086e+00 1647 2008 11 2.50874e+01 1.12359e+00 1885 2008 12 2.33803e+01 9.85873e-01 2330 2009 1 2.24251e+01 1.12253e+00 2780 2009 2 2.23934e+01 1.12321e+00 2213 2009 3 2.30905e+01 9.31546e-01 2103 2009 4 2.46311e+01 6.51055e-01 2782 2009 5 2.64168e+01 1.09031e+00 2662 2009 6 2.88371e+01 1.18144e+00 2283 2009 7 2.92741e+01 8.11790e-01 1951 2009 8 2.99460e+01 9.28599e-01 2585 2009 9 2.94420e+01 9.61659e-01 1479 2009 10 2.87750e+01 1.30774e+00 3037 2009 11 2.69487e+01 9.31779e-01 1434 2009 12 2.47748e+01 1.29287e+00 1687 2010 1 2.27334e+01 1.29315e+00 1318 2010 2 2.23659e+01 1.25920e+00 1132 2010 3 2.12257e+01 9.04936e-01 2056 2010 4 2.37199e+01 1.07133e+00 1933 2010 5 2.70115e+01 1.25125e+00 3338 2010 6 2.96888e+01 9.55894e-01 2858 2010 7 2.91877e+01 1.47594e+00 1700 2010 8 3.01530e+01 9.08077e-01 1979 2010 9 2.92532e+01 8.73847e-01 2131 2010 10 2.73740e+01 8.73229e-01 2601 2010 11 2.58105e+01 1.11970e+00 2286 2010 12 2.33659e+01 1.48621e+00 2872 2011 1 2.17430e+01 1.42783e+00 1927 2011 2 2.18493e+01 8.28249e-01 2537 2011 3 2.39900e+01 8.69756e-01 2812 2011 4 2.58826e+01 7.38911e-01 3215 2011 5 2.69710e+01 7.97595e-01 3129 2011 6 2.81445e+01 1.27047e+00 2014 2011 7 2.94933e+01 1.10295e+00 2255 2011 8 2.95507e+01 1.06912e+00 1600 2011 9 2.99365e+01 9.53188e-01 2011 2011 10 2.80474e+01 1.55048e+00 1272 2011 11 2.51386e+01 7.44584e-01 2335 2011 12 2.39628e+01 7.68074e-01 1988 2012 1 2.28188e+01 8.09290e-01 2017 2012 2 2.40400e+01 6.85036e-01 1756 2012 3 2.43323e+01 8.99848e-01 2630 2012 4 2.53102e+01 8.96200e-01 2198 2012 5 2.62962e+01 1.38599e+00 2031 2012 6 2.82752e+01 1.07806e+00 1547 2012 7 2.87424e+01 8.30739e-01 2450 2012 8 2.94550e+01 1.39001e+00 1941 2012 9 2.90966e+01 9.68988e-01 1898 2012 10 2.78508e+01 1.01374e+00 2209 2012 11 2.61450e+01 9.65925e-01 1998 2012 12 2.46520e+01 1.04625e+00 1789 2013 1 2.37978e+01 7.88496e-01 2114 2013 2 2.38150e+01 8.58263e-01 2416 2013 3 2.32867e+01 9.70160e-01 2122 2013 4 2.54247e+01 1.21524e+00 2398 2013 5 2.64984e+01 6.70450e-01 2775 2013 6 2.81805e+01 5.62140e-01 1444 2013 7 2.85734e+01 1.18690e+00 1757 2013 8 2.91231e+01 1.37831e+00 1825 2013 9 2.90835e+01 7.35651e-01 1694 2013 10 2.81082e+01 1.02309e+00 2559 2013 11 2.63354e+01 1.23363e+00 1478 2013 12 2.49911e+01 9.46401e-01 1873 2014 1 2.42063e+01 1.16559e+00 1955 2014 2 2.44777e+01 1.15053e+00 2710 2014 3 2.43911e+01 7.19375e-01 3113 2014 4 2.56650e+01 9.86871e-01 2378 2014 5 2.65193e+01 8.94969e-01 2358 2014 6 2.86472e+01 1.10917e+00 1977 2014 7 2.98055e+01 9.10541e-01 2086 2014 8 3.06273e+01 8.80224e-01 2883 2014 9 2.97666e+01 9.53025e-01 1388 2014 10 2.79291e+01 1.08872e+00 2760 2014 11 2.56087e+01 9.78371e-01 2533 2014 12 2.44991e+01 1.10664e+00 1967 2015 1 2.43659e+01 9.13748e-01 1609 2015 2 2.34308e+01 1.00837e+00 1901 2015 3 2.50158e+01 9.46061e-01 3073 2015 4 2.63785e+01 1.27297e+00 3282 2015 5 2.70916e+01 8.76762e-01 2990 2015 6 2.91063e+01 9.78522e-01 1717 2015 7 2.98736e+01 8.57928e-01 2089 2015 8 3.02939e+01 1.06115e+00 1917 2015 9 2.96990e+01 1.49762e+00 1367 2015 10 2.85128e+01 1.19483e+00 2048 2015 11 2.73458e+01 1.03977e+00 2237 2015 12 2.51617e+01 7.15739e-01 1474 2016 1 2.47022e+01 1.09943e+00 749 2016 2 2.37547e+01 1.30753e+00 1417 2016 3 2.38796e+01 1.26679e+00 991 2016 4 2.55583e+01 7.61549e-01 2743 2016 5 2.72804e+01 9.56331e-01 2727 2016 6 2.89410e+01 8.52177e-01 2318 2016 7 2.98223e+01 7.52268e-01 2506 2016 8 3.02209e+01 1.20328e+00 1691 2016 9 2.96639e+01 1.09374e+00 2522 2016 10 2.80040e+01 1.02079e+00 1423 2016 11 2.64013e+01 8.44218e-01 2035 2016 12 2.54087e+01 7.24071e-01 2021 2017 1 2.40700e+01 9.21698e-01 2050 2017 2 2.35944e+01 8.42647e-01 2653 2017 3 2.43796e+01 8.44814e-01 2538 2017 4 2.52845e+01 1.11646e+00 1591 2017 5 2.68992e+01 9.34929e-01 3169 2017 6 2.83780e+01 1.25423e+00 1376 2017 7 2.99439e+01 7.76465e-01 2680 2017 8 3.02920e+01 1.20672e+00 2431 2017 9 2.96310e+01 8.24987e-01 2662 2017 10 2.79702e+01 1.02136e+00 1674 2017 11 2.58152e+01 7.14949e-01 3139 2017 12 2.49700e+01 1.21524e+00 2755 2018 1 2.34445e+01 1.19999e+00 1038 2018 2 2.41952e+01 1.08603e+00 2665 2018 3 2.47177e+01 8.58807e-01 3145 2018 4 2.57161e+01 9.22705e-01 3147 2018 5 2.56978e+01 1.29304e+00 867 2018 6 2.86267e+01 1.11426e+00 1858 2018 7 3.02605e+01 9.43080e-01 1916 2018 8 2.99200e+01 6.95891e-01 2669 2018 9 2.98274e+01 1.00198e+00 2460 2018 10 2.81087e+01 8.81654e-01 3070 2018 11 2.70685e+01 8.84126e-01 2077 2018 12 2.44172e+01 1.29898e+00 1611 2019 1 2.42392e+01 1.01874e+00 2506 2019 2 2.46363e+01 1.15956e+00 2611 2019 3 2.55680e+01 9.92454e-01 2379 2019 4 2.60701e+01 7.37557e-01 2904 2019 5 2.73866e+01 7.48310e-01 2999 2019 6 2.95832e+01 9.88688e-01 2314 2019 7 2.97863e+01 1.11837e+00 2236 2019 8 3.04639e+01 9.99541e-01 2018 2019 9 2.89860e+01 1.27822e+00 2084 2019 10 2.83266e+01 8.50635e-01 2552 2019 11 2.73731e+01 1.43131e+00 2145 2019 12 2.49013e+01 1.03579e+00 1912 2020 1 2.44443e+01 9.19573e-01 2550 2020 2 2.46138e+01 1.39172e+00 2055 2020 3 2.51195e+01 7.68889e-01 3371 2020 4 2.65351e+01 8.77741e-01 2488 2020 5 2.69656e+01 1.20122e+00 1798 2020 6 2.91098e+01 1.13613e+00 1796 2020 7 3.01864e+01 1.04723e+00 2165 2020 8 3.03347e+01 1.12362e+00 2287 2020 9 2.98329e+01 7.80996e-01 1925 2020 10 2.85092e+01 1.18025e+00 2028 2020 11 2.60871e+01 1.17728e+00 1297 2020 12 2.48180e+01 1.46594e+00 1880 2021 1 2.33247e+01 9.64740e-01 2192 2021 2 2.35854e+01 1.24921e+00 2811 2021 3 2.47966e+01 8.38737e-01 2628 2021 4 2.55108e+01 8.76289e-01 2724 2021 5 2.70232e+01 9.09848e-01 2749 2021 6 2.77685e+01 1.21253e+00 1229 2021 7 2.93323e+01 9.48471e-01 2351 2021 8 3.02647e+01 8.84739e-01 2278 2021 9 2.98161e+01 9.27017e-01 2418 2021 10 2.86488e+01 8.25069e-01 2478 2021 11 2.59485e+01 8.87081e-01 1767 2021 12 2.51741e+01 8.01571e-01 2750 2022 1 2.40172e+01 1.02764e+00 1739 2022 2 2.40046e+01 1.11226e+00 2715 2022 3 2.54315e+01 8.13407e-01 2887 2022 4 2.59737e+01 6.60732e-01 1660 2022 5 2.74941e+01 1.01553e+00 2710 2022 6 2.90979e+01 1.12239e+00 2289 2022 7 2.97620e+01 8.77871e-01 2952 2022 8 3.02008e+01 7.49795e-01 2457 2022 9 3.07365e+01 9.97611e-01 1991 2022 10 2.73223e+01 1.01854e+00 2003 2022 11 2.69462e+01 6.39166e-01 2534 2022 12 2.55465e+01 8.10108e-01 1996 2023 1 2.44132e+01 8.66895e-01 2832 2023 2 2.46239e+01 9.94445e-01 2956 2023 3 2.52568e+01 9.60022e-01 2509 2023 4 2.65910e+01 5.91087e-01 1943 2023 5 2.75793e+01 8.98331e-01 2642 2023 6 2.91395e+01 9.34097e-01 1861 2023 7 3.10591e+01 1.19323e+00 1617 2023 8 3.07859e+01 8.66649e-01 2240 2023 9 3.05434e+01 6.37807e-01 2034 2023 10 2.88386e+01 1.12866e+00 2455 2023 11 2.66456e+01 8.81356e-01 2100 2023 12 2.51744e+01 9.62031e-01 1073 2024 1 2.44472e+01 9.75377e-01 1444 2024 2 2.31638e+01 8.63566e-01 2496 2024 3 2.50011e+01 6.79102e-01 1935 2024 4 2.49900e+01 6.26953e-01 320