YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.42585e+01 3.86272e-01 110 2000 3 2.48997e+01 6.11604e-01 646 2000 4 2.54982e+01 6.75750e-01 454 2000 5 2.67822e+01 8.90290e-01 520 2000 6 2.65682e+01 6.12703e-01 309 2000 7 2.69683e+01 1.01157e+00 365 2000 8 2.83943e+01 6.77011e-01 256 2000 9 2.85580e+01 3.88856e-01 550 2000 10 2.87704e+01 6.70514e-01 782 2000 11 2.82318e+01 6.47526e-01 843 2000 12 2.64860e+01 8.93186e-01 504 2001 1 2.58190e+01 4.41862e-01 593 2001 2 2.55820e+01 8.97716e-01 553 2001 3 2.56041e+01 5.31034e-01 604 2001 4 2.61501e+01 5.67584e-01 416 2001 5 2.65127e+01 8.06741e-01 456 2001 6 2.72942e+01 9.81073e-01 191 2001 7 2.72896e+01 7.15430e-01 337 2001 8 2.78911e+01 5.98068e-01 474 2001 9 2.85857e+01 6.82671e-01 552 2001 10 2.81426e+01 7.98704e-01 401 2001 11 2.78744e+01 4.43377e-01 460 2001 12 2.73170e+01 6.47669e-01 379 2002 1 2.64332e+01 6.40300e-01 714 2002 2 2.54381e+01 6.45589e-01 487 2002 3 2.57545e+01 5.69011e-01 599 2002 4 2.61765e+01 6.24656e-01 394 2002 5 2.64767e+01 4.95037e-01 614 2002 6 2.67869e+01 1.01621e+00 382 2002 7 2.70192e+01 7.99366e-01 1871 2002 8 2.80714e+01 7.00610e-01 1426 2002 9 2.85468e+01 5.92232e-01 1625 2002 10 2.86373e+01 6.27589e-01 2698 2002 11 2.82329e+01 5.66839e-01 2823 2002 12 2.69570e+01 8.99086e-01 2475 2003 1 2.65873e+01 6.45606e-01 2535 2003 2 2.61897e+01 6.05728e-01 1970 2003 3 2.62353e+01 6.48115e-01 2945 2003 4 2.65694e+01 7.81207e-01 1795 2003 5 2.67916e+01 7.61221e-01 1762 2003 6 2.65263e+01 8.16477e-01 761 2003 7 2.67361e+01 8.80936e-01 1568 2003 8 2.76876e+01 6.18118e-01 1743 2003 9 2.83776e+01 7.58574e-01 2223 2003 10 2.88061e+01 9.27295e-01 2401 2003 11 2.78158e+01 9.11428e-01 1970 2003 12 2.69228e+01 6.30358e-01 1911 2004 1 2.62640e+01 5.99727e-01 2830 2004 2 2.60729e+01 5.93893e-01 2447 2004 3 2.55793e+01 6.88812e-01 2349 2004 4 2.65494e+01 6.38418e-01 2606 2004 5 2.66297e+01 6.50271e-01 1471 2004 6 2.71255e+01 7.01714e-01 1565 2004 7 2.75607e+01 7.87802e-01 1626 2004 8 2.80179e+01 8.52907e-01 1986 2004 9 2.85090e+01 9.01833e-01 1401 2004 10 2.86523e+01 9.24377e-01 1810 2004 11 2.72321e+01 7.78805e-01 1715 2004 12 2.64000e+01 6.82271e-01 2619 2005 1 2.55511e+01 6.88088e-01 1980 2005 2 2.50888e+01 6.56781e-01 2515 2005 3 2.58067e+01 5.56128e-01 2809 2005 4 2.68318e+01 9.23389e-01 1930 2005 5 2.76060e+01 7.11497e-01 1427 2005 6 2.81445e+01 8.57515e-01 1486 2005 7 2.81751e+01 5.63083e-01 1481 2005 8 2.88290e+01 6.39480e-01 1331 2005 9 2.92810e+01 6.30704e-01 1791 2005 10 2.85835e+01 9.89201e-01 1337 2005 11 2.81537e+01 8.12403e-01 2445 2005 12 2.68971e+01 7.17686e-01 2321 2006 1 2.60184e+01 6.90369e-01 2226 2006 2 2.56780e+01 5.80654e-01 2372 2006 3 2.58274e+01 8.63071e-01 2317 2006 4 2.68089e+01 7.24357e-01 2078 2006 5 2.73062e+01 8.21003e-01 2097 2006 6 2.77853e+01 7.13391e-01 969 2006 7 2.75694e+01 6.84610e-01 1522 2006 8 2.77438e+01 7.21149e-01 1994 2006 9 2.89466e+01 8.50778e-01 2128 2006 10 2.89332e+01 8.43906e-01 1586 2006 11 2.80703e+01 6.53551e-01 2674 2006 12 2.72214e+01 6.91018e-01 2720 2007 1 2.61337e+01 5.32125e-01 3103 2007 2 2.61836e+01 6.40525e-01 2807 2007 3 2.60367e+01 6.50705e-01 1900 2007 4 2.64133e+01 8.88948e-01 2145 2007 5 2.72639e+01 6.33637e-01 1336 2007 6 2.78974e+01 9.01210e-01 1432 2007 7 2.78473e+01 6.41060e-01 1328 2007 8 2.80784e+01 6.49771e-01 1649 2007 9 2.86389e+01 5.74098e-01 2079 2007 10 2.87634e+01 7.60936e-01 1588 2007 11 2.78954e+01 6.54445e-01 2075 2007 12 2.66035e+01 5.94197e-01 2455 2008 1 2.61058e+01 5.82970e-01 2309 2008 2 2.53207e+01 5.54046e-01 2392 2008 3 2.53537e+01 5.93670e-01 2776 2008 4 2.55738e+01 7.18241e-01 2122 2008 5 2.65002e+01 8.11449e-01 1902 2008 6 2.74381e+01 7.76142e-01 1184 2008 7 2.71690e+01 6.86957e-01 1950 2008 8 2.82375e+01 6.77977e-01 1632 2008 9 2.84318e+01 7.12526e-01 1408 2008 10 2.84428e+01 6.90389e-01 2134 2008 11 2.79155e+01 7.57239e-01 2473 2008 12 2.61766e+01 7.34663e-01 2590 2009 1 2.56631e+01 5.63358e-01 2899 2009 2 2.54382e+01 6.64874e-01 1944 2009 3 2.50039e+01 6.01715e-01 1685 2009 4 2.57361e+01 7.43537e-01 2551 2009 5 2.64064e+01 7.21367e-01 929 2009 6 2.73299e+01 7.27530e-01 1113 2009 7 2.73366e+01 9.38313e-01 1173 2009 8 2.76548e+01 8.20998e-01 1687 2009 9 2.84947e+01 7.79696e-01 1687 2009 10 2.86097e+01 6.78133e-01 2565 2009 11 2.81862e+01 6.25550e-01 2171 2009 12 2.74218e+01 6.24863e-01 2472 2010 1 2.66952e+01 5.72965e-01 2677 2010 2 2.67281e+01 5.56239e-01 2523 2010 3 2.69113e+01 7.64548e-01 1912 2010 4 2.66290e+01 8.31498e-01 1609 2010 5 2.77539e+01 9.50482e-01 1445 2010 6 2.80797e+01 5.84769e-01 1226 2010 7 2.79426e+01 9.38408e-01 1277 2010 8 2.88973e+01 8.56246e-01 1664 2010 9 2.87558e+01 7.15839e-01 1640 2010 10 2.86268e+01 8.94789e-01 2267 2010 11 2.71286e+01 7.30310e-01 1208 2010 12 2.63512e+01 8.61463e-01 1631 2011 1 2.57139e+01 4.91557e-01 2607 2011 2 2.57150e+01 6.20526e-01 2637 2011 3 2.53739e+01 6.27107e-01 2512 2011 4 2.63896e+01 1.02065e+00 2428 2011 5 2.67470e+01 1.10898e+00 973 2011 6 2.72714e+01 1.27385e+00 1034 2011 7 2.77869e+01 7.69787e-01 1583 2011 8 2.80424e+01 6.02990e-01 1555 2011 9 2.81975e+01 9.38162e-01 1554 2011 10 2.85745e+01 4.84053e-01 2734 2011 11 2.78309e+01 6.55641e-01 1949 2011 12 2.69791e+01 8.19099e-01 2236 2012 1 2.57156e+01 8.05145e-01 2167 2012 2 2.56258e+01 6.05449e-01 2522 2012 3 2.55634e+01 6.12355e-01 2243 2012 4 2.61664e+01 8.28636e-01 2077 2012 5 2.64501e+01 9.46751e-01 1827 2012 6 2.72615e+01 7.29194e-01 1512 2012 7 2.72810e+01 7.73307e-01 1523 2012 8 2.77164e+01 6.39149e-01 1481 2012 9 2.86293e+01 9.14452e-01 2053 2012 10 2.89326e+01 7.65260e-01 1623 2012 11 2.83952e+01 6.51636e-01 2010 2012 12 2.73133e+01 7.60982e-01 2390 2013 1 2.59925e+01 6.28584e-01 2159 2013 2 2.57079e+01 5.25316e-01 2403 2013 3 2.59894e+01 5.95940e-01 2333 2013 4 2.63024e+01 6.85687e-01 2525 2013 5 2.69690e+01 7.97121e-01 1928 2013 6 2.66293e+01 7.26559e-01 878 2013 7 2.74878e+01 6.42161e-01 1774 2013 8 2.81523e+01 6.66632e-01 1687 2013 9 2.88407e+01 7.10804e-01 1879 2013 10 2.89848e+01 7.48499e-01 1406 2013 11 2.79014e+01 6.67894e-01 2209 2013 12 2.67627e+01 7.23734e-01 2151 2014 1 2.61835e+01 4.04702e-01 3278 2014 2 2.58540e+01 5.67417e-01 2142 2014 3 2.61339e+01 5.39712e-01 3040 2014 4 2.64917e+01 6.93024e-01 2309 2014 5 2.68447e+01 6.45530e-01 1318 2014 6 2.70268e+01 1.13310e+00 1309 2014 7 2.70820e+01 9.05495e-01 1326 2014 8 2.76908e+01 7.13819e-01 1458 2014 9 2.83279e+01 7.34443e-01 1664 2014 10 2.85162e+01 7.53171e-01 2200 2014 11 2.82017e+01 6.39155e-01 2059 2014 12 2.70439e+01 6.53101e-01 2850 2015 1 2.63764e+01 7.34944e-01 3136 2015 2 2.64625e+01 5.60596e-01 2644 2015 3 2.59980e+01 5.05025e-01 2421 2015 4 2.61873e+01 6.04612e-01 2426 2015 5 2.68561e+01 7.74116e-01 1595 2015 6 2.70712e+01 8.37278e-01 671 2015 7 2.73786e+01 7.09528e-01 1302 2015 8 2.79407e+01 6.85550e-01 1971 2015 9 2.87965e+01 9.19967e-01 1873 2015 10 2.92340e+01 6.12614e-01 2178 2015 11 2.83462e+01 5.17874e-01 1384 2015 12 2.71374e+01 6.74491e-01 1966 2016 1 2.66671e+01 4.70770e-01 2425 2016 2 2.62419e+01 5.84441e-01 2056 2016 3 2.63259e+01 5.59319e-01 2513 2016 4 2.66377e+01 7.35203e-01 1645 2016 5 2.68903e+01 8.80477e-01 1102 2016 6 2.76152e+01 8.33497e-01 1244 2016 7 2.76307e+01 6.17880e-01 1668 2016 8 2.83540e+01 6.13859e-01 2134 2016 9 2.87824e+01 8.45405e-01 2192 2016 10 2.88766e+01 6.70965e-01 1982 2016 11 2.86631e+01 7.82749e-01 1234 2016 12 2.73019e+01 7.61347e-01 2098 2017 1 2.61020e+01 6.36812e-01 2400 2017 2 2.62259e+01 4.52267e-01 2349 2017 3 2.61288e+01 5.24707e-01 1813 2017 4 2.64048e+01 8.24850e-01 1332 2017 5 2.69392e+01 5.76529e-01 1326 2017 6 2.76383e+01 7.51961e-01 1742 2017 7 2.79528e+01 4.86372e-01 1436 2017 8 2.83391e+01 5.46462e-01 1936 2017 9 2.81892e+01 9.83534e-01 1418 2017 10 2.78834e+01 7.22024e-01 1400 2017 11 2.81274e+01 5.54882e-01 2085 2017 12 2.72620e+01 7.37333e-01 2631 2018 1 2.65546e+01 7.67297e-01 2289 2018 2 2.55441e+01 7.48209e-01 2233 2018 3 2.59697e+01 6.16936e-01 2657 2018 4 2.64408e+01 5.07034e-01 2217 2018 5 2.67657e+01 6.67001e-01 2098 2018 6 2.71383e+01 7.19662e-01 1383 2018 7 2.68726e+01 8.35350e-01 910 2018 8 2.80517e+01 5.68389e-01 2081 2018 9 2.82487e+01 7.36565e-01 2296 2018 10 2.84140e+01 8.58052e-01 2027 2018 11 2.76867e+01 5.30487e-01 2423 2018 12 2.71371e+01 7.25019e-01 2296 2019 1 2.62919e+01 4.64936e-01 2634 2019 2 2.57721e+01 6.82790e-01 2077 2019 3 2.60279e+01 5.29490e-01 2511 2019 4 2.63275e+01 7.08117e-01 2451 2019 5 2.69205e+01 6.32744e-01 1180 2019 6 2.73403e+01 6.31449e-01 2047 2019 7 2.77077e+01 5.79478e-01 2200 2019 8 2.81880e+01 6.29919e-01 2394 2019 9 2.87105e+01 7.94854e-01 1579 2019 10 2.91819e+01 6.46959e-01 2339 2019 11 2.86192e+01 5.28653e-01 2222 2019 12 2.78926e+01 9.15123e-01 2088 2020 1 2.67210e+01 7.98378e-01 1662 2020 2 2.63335e+01 6.25260e-01 2693 2020 3 2.63323e+01 4.80807e-01 2179 2020 4 2.69451e+01 7.14137e-01 2315 2020 5 2.74679e+01 6.14008e-01 1949 2020 6 2.80083e+01 8.68963e-01 2368 2020 7 2.81930e+01 8.48990e-01 1931 2020 8 2.85988e+01 6.11498e-01 1857 2020 9 2.91212e+01 8.06158e-01 1958 2020 10 2.89267e+01 6.61021e-01 2095 2020 11 2.79980e+01 5.91383e-01 2168 2020 12 2.72421e+01 5.37916e-01 2976 2021 1 2.63521e+01 5.10001e-01 2461 2021 2 2.59845e+01 6.26753e-01 2166 2021 3 2.59326e+01 7.81857e-01 2622 2021 4 2.62968e+01 8.30352e-01 2023 2021 5 2.67908e+01 6.54143e-01 2074 2021 6 2.72319e+01 7.55216e-01 841 2021 7 2.74722e+01 7.31334e-01 1529 2021 8 2.77311e+01 9.23688e-01 1626 2021 9 2.89840e+01 6.80413e-01 2547 2021 10 2.90625e+01 7.87169e-01 2349 2021 11 2.82594e+01 5.91032e-01 2237 2021 12 2.71350e+01 6.07252e-01 2843 2022 1 2.65299e+01 4.66036e-01 2952 2022 2 2.60684e+01 5.49464e-01 1943 2022 3 2.58504e+01 4.18144e-01 2363 2022 4 2.65166e+01 5.46078e-01 1156 2022 5 2.68866e+01 8.08817e-01 1494 2022 6 2.74847e+01 8.44771e-01 1759 2022 7 2.76328e+01 5.01176e-01 1372 2022 8 2.81607e+01 8.28966e-01 2012 2022 9 2.84188e+01 8.06808e-01 1939 2022 10 2.87275e+01 6.11557e-01 1623 2022 11 2.78227e+01 7.75999e-01 2315 2022 12 2.69625e+01 5.20765e-01 2871 2023 1 2.65070e+01 5.69618e-01 2716 2023 2 2.56419e+01 5.59503e-01 2282 2023 3 2.59311e+01 6.11600e-01 2916 2023 4 2.65592e+01 5.36576e-01 2333 2023 5 2.76149e+01 5.50000e-01 2340 2023 6 2.80513e+01 8.42542e-01 1980 2023 7 2.84356e+01 6.47222e-01 1187 2023 8 2.90206e+01 8.36207e-01 1536 2023 9 2.93358e+01 8.06075e-01 2392 2023 10 2.94190e+01 7.68101e-01 2108 2023 11 2.85205e+01 9.77996e-01 2351 2023 12 2.75838e+01 8.00562e-01 2587 2024 1 2.67886e+01 4.69021e-01 2335 2024 2 2.65572e+01 6.05685e-01 1963 2024 3 2.68934e+01 5.96102e-01 2648 2024 4 2.67752e+01 5.39327e-01 409