YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.54551e+01 1.01253e-01 128 2000 3 2.48109e+01 1.02835e+00 478 2000 4 2.59103e+01 5.27978e-01 532 2000 5 2.69179e+01 3.53186e-01 492 2000 6 2.68480e+01 4.07239e-01 328 2000 7 2.67994e+01 1.38440e+00 569 2000 8 2.73372e+01 9.93596e-01 260 2000 9 2.82923e+01 5.27521e-01 563 2000 10 2.87696e+01 5.42813e-01 663 2000 11 2.76453e+01 8.88723e-01 763 2000 12 2.65538e+01 5.14884e-01 649 2001 1 2.61732e+01 4.45224e-01 594 2001 2 2.57798e+01 6.18595e-01 596 2001 3 2.53484e+01 6.87695e-01 789 2001 4 2.62497e+01 5.56851e-01 447 2001 5 2.64769e+01 6.44837e-01 528 2001 6 2.71667e+01 5.15939e-01 182 2001 7 2.76503e+01 1.05558e+00 503 2001 8 2.81368e+01 5.77154e-01 603 2001 9 2.86926e+01 4.98172e-01 533 2001 10 2.74187e+01 8.54936e-01 436 2001 11 2.75358e+01 1.45159e+00 422 2001 12 2.74042e+01 3.98970e-01 561 2002 1 2.62109e+01 7.66872e-01 592 2002 2 2.58389e+01 3.29704e-01 579 2002 3 2.61035e+01 5.63066e-01 701 2002 4 2.65261e+01 5.11304e-01 480 2002 5 2.69358e+01 5.32828e-01 575 2002 6 2.57981e+01 1.22897e+00 258 2002 7 2.73288e+01 6.53600e-01 2005 2002 8 2.82613e+01 6.57128e-01 2165 2002 9 2.86352e+01 8.12541e-01 2314 2002 10 2.85585e+01 6.26079e-01 3079 2002 11 2.81590e+01 5.17586e-01 3248 2002 12 2.71626e+01 6.79870e-01 2970 2003 1 2.65385e+01 5.66963e-01 3094 2003 2 2.62557e+01 4.72087e-01 2401 2003 3 2.63510e+01 6.33403e-01 3462 2003 4 2.65126e+01 7.52430e-01 2405 2003 5 2.67494e+01 6.92255e-01 1905 2003 6 2.64694e+01 8.85883e-01 835 2003 7 2.68620e+01 8.20537e-01 1323 2003 8 2.77883e+01 6.43734e-01 2669 2003 9 2.86381e+01 6.15547e-01 2216 2003 10 2.88785e+01 6.41887e-01 2742 2003 11 2.80265e+01 9.03177e-01 1737 2003 12 2.70431e+01 5.95488e-01 1794 2004 1 2.64996e+01 6.89613e-01 3250 2004 2 2.62164e+01 5.06223e-01 2738 2004 3 2.57657e+01 7.67501e-01 2511 2004 4 2.67099e+01 6.46621e-01 2773 2004 5 2.69336e+01 9.67842e-01 1478 2004 6 2.72661e+01 7.67964e-01 1943 2004 7 2.73466e+01 8.10577e-01 1891 2004 8 2.80251e+01 7.04969e-01 2129 2004 9 2.86316e+01 7.00987e-01 1897 2004 10 2.88648e+01 5.30404e-01 1800 2004 11 2.74914e+01 8.33457e-01 1670 2004 12 2.66220e+01 6.11007e-01 2744 2005 1 2.57018e+01 5.42899e-01 2056 2005 2 2.53197e+01 7.02913e-01 2300 2005 3 2.59023e+01 7.92024e-01 3220 2005 4 2.71713e+01 8.32544e-01 2446 2005 5 2.80207e+01 7.11788e-01 1682 2005 6 2.80593e+01 7.82248e-01 1538 2005 7 2.85566e+01 8.16468e-01 1354 2005 8 2.87867e+01 8.42588e-01 1702 2005 9 2.96744e+01 5.71035e-01 2158 2005 10 2.89976e+01 7.37640e-01 1367 2005 11 2.81816e+01 5.08868e-01 2320 2005 12 2.68837e+01 7.51306e-01 2547 2006 1 2.62349e+01 7.08898e-01 1943 2006 2 2.59408e+01 5.63892e-01 2800 2006 3 2.60505e+01 6.66568e-01 3192 2006 4 2.64704e+01 7.88519e-01 2795 2006 5 2.76433e+01 6.25822e-01 2249 2006 6 2.79396e+01 6.20623e-01 1512 2006 7 2.77010e+01 6.84013e-01 1488 2006 8 2.80583e+01 8.33950e-01 2151 2006 9 2.89956e+01 7.28787e-01 2152 2006 10 2.84362e+01 6.89978e-01 1819 2006 11 2.81771e+01 5.21594e-01 2680 2006 12 2.72808e+01 8.18590e-01 2756 2007 1 2.61660e+01 5.56357e-01 3175 2007 2 2.61343e+01 6.18931e-01 2669 2007 3 2.61863e+01 5.71916e-01 1770 2007 4 2.65878e+01 7.81507e-01 2489 2007 5 2.75749e+01 8.99145e-01 1914 2007 6 2.79802e+01 8.24018e-01 1778 2007 7 2.76891e+01 7.74164e-01 1733 2007 8 2.80534e+01 6.21463e-01 1872 2007 9 2.86496e+01 7.35477e-01 2662 2007 10 2.86370e+01 7.98645e-01 1982 2007 11 2.81344e+01 7.42092e-01 2332 2007 12 2.69319e+01 5.39594e-01 2659 2008 1 2.64136e+01 5.70619e-01 2877 2008 2 2.56161e+01 5.78364e-01 2716 2008 3 2.56452e+01 5.41098e-01 2741 2008 4 2.58157e+01 7.42578e-01 2506 2008 5 2.69164e+01 6.79025e-01 2263 2008 6 2.74288e+01 9.90166e-01 1403 2008 7 2.72986e+01 8.62139e-01 1894 2008 8 2.81895e+01 8.36448e-01 1645 2008 9 2.85328e+01 6.58645e-01 1162 2008 10 2.83549e+01 6.80213e-01 2632 2008 11 2.77769e+01 8.09194e-01 2622 2008 12 2.61979e+01 5.54648e-01 2620 2009 1 2.56588e+01 7.24290e-01 3201 2009 2 2.56871e+01 6.83552e-01 2154 2009 3 2.51609e+01 6.36504e-01 2201 2009 4 2.60380e+01 5.92781e-01 3025 2009 5 2.66855e+01 8.08267e-01 1471 2009 6 2.72427e+01 9.15057e-01 1532 2009 7 2.74855e+01 7.00511e-01 1328 2009 8 2.78244e+01 5.05088e-01 2020 2009 9 2.86144e+01 6.57375e-01 2296 2009 10 2.85833e+01 6.48898e-01 2538 2009 11 2.82676e+01 6.72365e-01 2427 2009 12 2.74003e+01 5.64936e-01 2540 2010 1 2.69293e+01 7.34185e-01 2873 2010 2 2.66877e+01 5.24173e-01 2602 2010 3 2.70699e+01 6.48810e-01 2681 2010 4 2.72730e+01 8.18033e-01 1762 2010 5 2.82885e+01 7.71682e-01 1666 2010 6 2.84629e+01 8.05974e-01 1221 2010 7 2.78658e+01 8.67135e-01 1233 2010 8 2.93835e+01 9.41952e-01 1741 2010 9 2.87649e+01 7.81213e-01 1649 2010 10 2.86862e+01 6.98592e-01 2389 2010 11 2.73485e+01 7.19713e-01 1592 2010 12 2.66198e+01 6.69663e-01 1725 2011 1 2.58696e+01 5.58136e-01 2761 2011 2 2.57503e+01 6.03518e-01 2659 2011 3 2.54009e+01 6.75112e-01 2626 2011 4 2.64370e+01 8.77880e-01 2321 2011 5 2.74730e+01 8.94224e-01 738 2011 6 2.82399e+01 8.40422e-01 1594 2011 7 2.79036e+01 7.49379e-01 1663 2011 8 2.82911e+01 6.43212e-01 1477 2011 9 2.82854e+01 1.04625e+00 2079 2011 10 2.84253e+01 4.87245e-01 2396 2011 11 2.80826e+01 6.69478e-01 1887 2011 12 2.70838e+01 8.71630e-01 2602 2012 1 2.60616e+01 6.01491e-01 2586 2012 2 2.55882e+01 7.30949e-01 2738 2012 3 2.58643e+01 5.67105e-01 2516 2012 4 2.64680e+01 8.06312e-01 2016 2012 5 2.69440e+01 9.06671e-01 1646 2012 6 2.73987e+01 7.29954e-01 2003 2012 7 2.73899e+01 6.52294e-01 1597 2012 8 2.77628e+01 5.79240e-01 1578 2012 9 2.83999e+01 8.52048e-01 2202 2012 10 2.86810e+01 8.58064e-01 2416 2012 11 2.84141e+01 6.38945e-01 2283 2012 12 2.73179e+01 7.27585e-01 2607 2013 1 2.59892e+01 6.79488e-01 2556 2013 2 2.57221e+01 5.10869e-01 3012 2013 3 2.60794e+01 5.69558e-01 2442 2013 4 2.64270e+01 7.06665e-01 2767 2013 5 2.70895e+01 8.04676e-01 1735 2013 6 2.71255e+01 6.08593e-01 881 2013 7 2.75262e+01 9.19312e-01 2124 2013 8 2.81121e+01 8.04546e-01 2438 2013 9 2.87059e+01 9.50873e-01 2597 2013 10 2.89572e+01 6.28591e-01 2086 2013 11 2.82342e+01 5.50256e-01 2180 2013 12 2.71193e+01 5.77020e-01 2229 2014 1 2.60838e+01 5.18784e-01 3094 2014 2 2.58326e+01 4.18028e-01 2879 2014 3 2.61036e+01 4.84845e-01 3595 2014 4 2.63932e+01 7.35003e-01 2592 2014 5 2.69482e+01 6.39343e-01 1877 2014 6 2.66994e+01 1.05898e+00 1333 2014 7 2.73246e+01 8.34351e-01 1422 2014 8 2.76418e+01 6.63551e-01 1812 2014 9 2.83347e+01 7.79577e-01 2752 2014 10 2.85154e+01 7.33386e-01 2938 2014 11 2.81610e+01 7.58747e-01 2536 2014 12 2.72503e+01 6.45026e-01 2913 2015 1 2.65993e+01 5.85344e-01 3563 2015 2 2.64524e+01 5.76463e-01 2693 2015 3 2.60492e+01 6.05339e-01 2805 2015 4 2.61288e+01 8.04044e-01 2334 2015 5 2.69440e+01 6.32416e-01 1877 2015 6 2.73946e+01 8.73075e-01 1388 2015 7 2.72265e+01 5.83742e-01 1536 2015 8 2.80449e+01 7.26450e-01 2315 2015 9 2.88825e+01 7.38515e-01 2379 2015 10 2.91324e+01 7.15606e-01 2120 2015 11 2.83505e+01 4.68168e-01 1928 2015 12 2.73747e+01 5.85228e-01 2066 2016 1 2.64335e+01 6.42376e-01 2789 2016 2 2.62606e+01 5.53252e-01 2605 2016 3 2.62451e+01 5.45895e-01 2533 2016 4 2.67554e+01 8.12444e-01 2329 2016 5 2.74550e+01 7.83692e-01 1501 2016 6 2.78609e+01 8.10677e-01 1073 2016 7 2.80452e+01 6.56503e-01 1961 2016 8 2.85104e+01 5.48439e-01 2496 2016 9 2.90218e+01 5.75631e-01 2485 2016 10 2.89595e+01 8.24431e-01 1984 2016 11 2.86499e+01 8.49232e-01 1243 2016 12 2.76391e+01 8.41665e-01 2374 2017 1 2.61291e+01 6.72900e-01 2435 2017 2 2.62737e+01 6.04844e-01 2905 2017 3 2.60659e+01 6.79355e-01 2554 2017 4 2.66201e+01 7.29826e-01 1952 2017 5 2.71651e+01 6.91013e-01 2077 2017 6 2.76351e+01 7.34075e-01 1841 2017 7 2.80747e+01 6.58858e-01 2233 2017 8 2.82085e+01 5.48248e-01 1428 2017 9 2.81484e+01 9.27294e-01 1363 2017 10 2.85524e+01 7.50589e-01 1938 2017 11 2.81905e+01 6.32913e-01 2289 2017 12 2.72046e+01 7.75782e-01 2700 2018 1 2.65850e+01 4.55573e-01 2599 2018 2 2.60266e+01 6.59546e-01 2625 2018 3 2.59789e+01 6.37067e-01 2858 2018 4 2.66442e+01 5.59662e-01 2408 2018 5 2.67372e+01 7.73534e-01 2658 2018 6 2.68439e+01 6.39298e-01 1634 2018 7 2.65568e+01 1.20651e+00 578 2018 8 2.78359e+01 6.75079e-01 2494 2018 9 2.83245e+01 6.94709e-01 2119 2018 10 2.86005e+01 7.41722e-01 2305 2018 11 2.77841e+01 6.51597e-01 2492 2018 12 2.70728e+01 7.44020e-01 2710 2019 1 2.62586e+01 6.08986e-01 3186 2019 2 2.59832e+01 5.53383e-01 2529 2019 3 2.61011e+01 5.62469e-01 3194 2019 4 2.62571e+01 7.03826e-01 2993 2019 5 2.67121e+01 7.89744e-01 1705 2019 6 2.72388e+01 7.28675e-01 2532 2019 7 2.77650e+01 6.10692e-01 2138 2019 8 2.82324e+01 6.31475e-01 2579 2019 9 2.88752e+01 8.54166e-01 1897 2019 10 2.92586e+01 7.92092e-01 2699 2019 11 2.85199e+01 5.11149e-01 2679 2019 12 2.79765e+01 7.20949e-01 2921 2020 1 2.67204e+01 6.81718e-01 2188 2020 2 2.64275e+01 5.98574e-01 2819 2020 3 2.63401e+01 7.09029e-01 2420 2020 4 2.69581e+01 5.62979e-01 3125 2020 5 2.75245e+01 6.80562e-01 2621 2020 6 2.80934e+01 6.94601e-01 2368 2020 7 2.80132e+01 7.19986e-01 1607 2020 8 2.84836e+01 6.63445e-01 2092 2020 9 2.91541e+01 7.44713e-01 2201 2020 10 2.91861e+01 5.87846e-01 2427 2020 11 2.79784e+01 5.88083e-01 2699 2020 12 2.71679e+01 5.75222e-01 2966 2021 1 2.62870e+01 6.11632e-01 2530 2021 2 2.61196e+01 5.66826e-01 2820 2021 3 2.60188e+01 7.82144e-01 3333 2021 4 2.63192e+01 7.80901e-01 2118 2021 5 2.67727e+01 8.96947e-01 2328 2021 6 2.73244e+01 7.77018e-01 1338 2021 7 2.74358e+01 6.71347e-01 1568 2021 8 2.78986e+01 7.38624e-01 2189 2021 9 2.89926e+01 8.32614e-01 2970 2021 10 2.88274e+01 7.15624e-01 2217 2021 11 2.83487e+01 5.98512e-01 2489 2021 12 2.73910e+01 5.35892e-01 3135 2022 1 2.65494e+01 5.71818e-01 2856 2022 2 2.60221e+01 6.10023e-01 2537 2022 3 2.60245e+01 4.29414e-01 2307 2022 4 2.66792e+01 7.32179e-01 1239 2022 5 2.68908e+01 5.63920e-01 1944 2022 6 2.75807e+01 8.11989e-01 2198 2022 7 2.75395e+01 5.54917e-01 1788 2022 8 2.81132e+01 8.69854e-01 2391 2022 9 2.87761e+01 7.08706e-01 1848 2022 10 2.86830e+01 5.26784e-01 1995 2022 11 2.77173e+01 6.45078e-01 2696 2022 12 2.69630e+01 5.01067e-01 3537 2023 1 2.64335e+01 5.28493e-01 2714 2023 2 2.58003e+01 5.90074e-01 2561 2023 3 2.60903e+01 5.61598e-01 2862 2023 4 2.65279e+01 6.12814e-01 3024 2023 5 2.78224e+01 7.17127e-01 2371 2023 6 2.80274e+01 8.16284e-01 2314 2023 7 2.82004e+01 7.49382e-01 1531 2023 8 2.92057e+01 7.30087e-01 2197 2023 9 2.95507e+01 5.70266e-01 2531 2023 10 2.91667e+01 8.56929e-01 2206 2023 11 2.86740e+01 6.74001e-01 1920 2023 12 2.76296e+01 7.30916e-01 2883 2024 1 2.69885e+01 4.70175e-01 2623 2024 2 2.66995e+01 6.40684e-01 2184 2024 3 2.69381e+01 6.52557e-01 3264 2024 4 2.68599e+01 6.06707e-01 270