YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.53191e+01 2.61322e-01 128 2000 3 2.49316e+01 8.80255e-01 606 2000 4 2.54327e+01 4.06232e-01 582 2000 5 2.68954e+01 6.15574e-01 636 2000 6 2.63047e+01 9.72753e-01 245 2000 7 2.69572e+01 7.81823e-01 405 2000 8 2.77533e+01 1.16453e+00 275 2000 9 2.86301e+01 5.13452e-01 638 2000 10 2.86414e+01 3.88719e-01 438 2000 11 2.80655e+01 9.38465e-01 555 2000 12 2.66888e+01 6.57430e-01 770 2001 1 2.60185e+01 8.13839e-01 682 2001 2 2.52942e+01 5.82755e-01 618 2001 3 2.54979e+01 5.46260e-01 706 2001 4 2.64504e+01 2.55662e-01 440 2001 5 2.66798e+01 7.51677e-01 607 2001 6 2.76842e+01 5.38199e-01 196 2001 7 2.77335e+01 8.26542e-01 451 2001 8 2.79899e+01 5.74347e-01 690 2001 9 2.85607e+01 5.38483e-01 719 2001 10 2.78454e+01 5.61013e-01 567 2001 11 2.83111e+01 5.42241e-01 429 2001 12 2.73420e+01 5.56660e-01 468 2002 1 2.58066e+01 7.46388e-01 643 2002 2 2.54495e+01 6.27991e-01 439 2002 3 2.58964e+01 7.73431e-01 504 2002 4 2.63330e+01 5.88170e-01 645 2002 5 2.64591e+01 6.79171e-01 782 2002 6 2.63978e+01 1.64283e+00 327 2002 7 2.73656e+01 6.99395e-01 2104 2002 8 2.82096e+01 7.24595e-01 1884 2002 9 2.85931e+01 7.56792e-01 2226 2002 10 2.85692e+01 5.95430e-01 2223 2002 11 2.81884e+01 6.81770e-01 3142 2002 12 2.71703e+01 6.77827e-01 2777 2003 1 2.65574e+01 6.00481e-01 2890 2003 2 2.62974e+01 5.10757e-01 2464 2003 3 2.63845e+01 5.69238e-01 3244 2003 4 2.68554e+01 6.99597e-01 1589 2003 5 2.69554e+01 6.29749e-01 1895 2003 6 2.67129e+01 8.81701e-01 890 2003 7 2.71244e+01 7.08537e-01 1466 2003 8 2.78160e+01 7.87296e-01 2079 2003 9 2.84538e+01 9.19648e-01 2205 2003 10 2.88526e+01 7.10448e-01 2707 2003 11 2.79229e+01 6.39517e-01 2051 2003 12 2.69373e+01 4.99886e-01 2157 2004 1 2.65447e+01 5.05602e-01 3114 2004 2 2.62137e+01 5.66595e-01 2781 2004 3 2.58531e+01 6.42221e-01 2810 2004 4 2.68559e+01 6.09829e-01 2927 2004 5 2.66464e+01 7.88731e-01 1592 2004 6 2.70147e+01 8.77380e-01 1889 2004 7 2.74931e+01 6.77035e-01 1480 2004 8 2.82007e+01 7.32949e-01 2347 2004 9 2.89349e+01 5.35655e-01 1495 2004 10 2.88347e+01 8.79357e-01 2101 2004 11 2.76151e+01 8.85640e-01 1581 2004 12 2.67446e+01 7.55969e-01 2766 2005 1 2.59334e+01 6.78405e-01 2227 2005 2 2.51974e+01 6.63197e-01 2960 2005 3 2.59703e+01 7.56493e-01 3154 2005 4 2.71210e+01 7.42529e-01 2595 2005 5 2.81647e+01 6.37452e-01 1956 2005 6 2.82951e+01 9.70276e-01 1596 2005 7 2.81928e+01 9.29426e-01 1647 2005 8 2.89900e+01 9.26921e-01 1750 2005 9 2.95254e+01 7.57349e-01 2105 2005 10 2.87870e+01 8.83729e-01 1687 2005 11 2.81099e+01 6.62108e-01 2677 2005 12 2.68147e+01 6.88028e-01 2790 2006 1 2.61515e+01 5.20653e-01 2274 2006 2 2.59867e+01 4.99312e-01 2736 2006 3 2.61769e+01 5.54821e-01 2792 2006 4 2.71498e+01 7.35517e-01 2647 2006 5 2.76117e+01 9.60933e-01 2422 2006 6 2.78470e+01 7.91739e-01 1455 2006 7 2.79030e+01 7.04582e-01 1564 2006 8 2.77495e+01 8.77172e-01 1756 2006 9 2.89815e+01 8.54615e-01 2365 2006 10 2.88830e+01 7.37258e-01 1665 2006 11 2.81417e+01 5.86609e-01 2838 2006 12 2.73750e+01 6.41870e-01 3065 2007 1 2.63006e+01 5.60915e-01 3307 2007 2 2.62244e+01 5.87195e-01 2646 2007 3 2.62481e+01 6.67877e-01 2414 2007 4 2.67272e+01 9.01131e-01 2408 2007 5 2.77759e+01 7.55839e-01 1955 2007 6 2.80244e+01 7.51898e-01 2115 2007 7 2.77837e+01 6.68416e-01 1309 2007 8 2.80038e+01 7.90160e-01 1571 2007 9 2.87035e+01 5.22689e-01 2319 2007 10 2.84857e+01 6.85913e-01 1593 2007 11 2.78500e+01 7.03489e-01 2367 2007 12 2.68009e+01 5.78704e-01 2745 2008 1 2.64712e+01 4.83843e-01 2704 2008 2 2.57316e+01 4.62516e-01 2599 2008 3 2.56134e+01 6.22316e-01 2781 2008 4 2.58361e+01 7.95394e-01 2621 2008 5 2.68870e+01 7.01104e-01 2465 2008 6 2.74866e+01 7.88298e-01 1724 2008 7 2.74580e+01 6.96806e-01 2182 2008 8 2.81865e+01 7.79224e-01 1933 2008 9 2.85336e+01 5.79274e-01 1314 2008 10 2.86007e+01 6.71905e-01 2324 2008 11 2.79199e+01 1.04652e+00 2414 2008 12 2.61564e+01 7.40390e-01 2552 2009 1 2.58021e+01 6.60941e-01 3123 2009 2 2.56383e+01 6.93149e-01 1969 2009 3 2.51617e+01 6.52684e-01 1930 2009 4 2.59358e+01 8.09894e-01 2827 2009 5 2.68009e+01 8.72534e-01 1208 2009 6 2.76158e+01 6.09377e-01 1627 2009 7 2.76540e+01 8.37303e-01 1383 2009 8 2.79291e+01 6.48579e-01 1964 2009 9 2.87829e+01 7.30846e-01 2184 2009 10 2.85735e+01 6.86741e-01 2794 2009 11 2.82242e+01 5.96470e-01 2186 2009 12 2.75829e+01 4.97020e-01 2854 2010 1 2.69977e+01 5.46005e-01 2204 2010 2 2.68259e+01 5.42940e-01 2475 2010 3 2.71907e+01 5.64798e-01 2544 2010 4 2.68713e+01 8.45082e-01 1623 2010 5 2.81313e+01 6.91969e-01 1755 2010 6 2.82367e+01 6.13810e-01 1166 2010 7 2.78552e+01 9.93324e-01 1329 2010 8 2.89106e+01 9.98222e-01 1765 2010 9 2.87683e+01 8.07027e-01 1723 2010 10 2.85434e+01 1.01153e+00 2030 2010 11 2.74499e+01 6.75862e-01 1726 2010 12 2.68001e+01 7.29262e-01 1655 2011 1 2.58275e+01 7.69752e-01 3131 2011 2 2.59437e+01 5.63396e-01 2589 2011 3 2.55351e+01 4.54362e-01 2679 2011 4 2.63624e+01 8.42538e-01 2876 2011 5 2.76278e+01 1.12644e+00 1029 2011 6 2.80007e+01 8.33071e-01 1592 2011 7 2.81672e+01 5.91046e-01 1557 2011 8 2.80962e+01 6.97737e-01 1642 2011 9 2.82598e+01 1.13523e+00 1674 2011 10 2.86750e+01 5.67763e-01 2745 2011 11 2.79931e+01 5.48442e-01 2141 2011 12 2.72211e+01 6.98710e-01 2160 2012 1 2.61090e+01 5.10710e-01 2600 2012 2 2.59102e+01 4.65454e-01 2660 2012 3 2.59491e+01 5.01698e-01 2311 2012 4 2.65095e+01 6.43285e-01 2563 2012 5 2.66940e+01 9.58556e-01 1596 2012 6 2.74736e+01 7.21492e-01 1829 2012 7 2.75324e+01 7.36119e-01 1739 2012 8 2.79080e+01 5.32174e-01 1400 2012 9 2.84376e+01 8.29705e-01 2131 2012 10 2.90817e+01 8.28337e-01 1844 2012 11 2.85239e+01 5.10195e-01 2278 2012 12 2.73940e+01 6.92955e-01 2286 2013 1 2.62202e+01 7.16725e-01 1993 2013 2 2.58107e+01 4.26045e-01 2872 2013 3 2.61279e+01 6.81660e-01 2493 2013 4 2.65009e+01 5.92769e-01 3248 2013 5 2.71846e+01 7.07528e-01 1920 2013 6 2.65050e+01 1.08364e+00 822 2013 7 2.77830e+01 7.68421e-01 2066 2013 8 2.83683e+01 8.22890e-01 1863 2013 9 2.88872e+01 8.21409e-01 2063 2013 10 2.91178e+01 7.86552e-01 1859 2013 11 2.80854e+01 6.76966e-01 2093 2013 12 2.68809e+01 6.92704e-01 2166 2014 1 2.61789e+01 4.61468e-01 3004 2014 2 2.58606e+01 4.56866e-01 2836 2014 3 2.62532e+01 4.78302e-01 3354 2014 4 2.66145e+01 5.97158e-01 2987 2014 5 2.70635e+01 9.94937e-01 1862 2014 6 2.69627e+01 1.00410e+00 1437 2014 7 2.74070e+01 6.96198e-01 1523 2014 8 2.78008e+01 8.42413e-01 1824 2014 9 2.83664e+01 8.47196e-01 1882 2014 10 2.88034e+01 7.79500e-01 2515 2014 11 2.81693e+01 6.97511e-01 2472 2014 12 2.70958e+01 6.69232e-01 2982 2015 1 2.65562e+01 5.76833e-01 2834 2015 2 2.64765e+01 5.71098e-01 2713 2015 3 2.62517e+01 4.94652e-01 2622 2015 4 2.61442e+01 5.86531e-01 2745 2015 5 2.67707e+01 1.01032e+00 2226 2015 6 2.73559e+01 1.05864e+00 1043 2015 7 2.72908e+01 6.68481e-01 1492 2015 8 2.78280e+01 6.66932e-01 2453 2015 9 2.88583e+01 7.12222e-01 2243 2015 10 2.92921e+01 7.68721e-01 2167 2015 11 2.81506e+01 7.19209e-01 1624 2015 12 2.72652e+01 6.09045e-01 1987 2016 1 2.67532e+01 5.28367e-01 2843 2016 2 2.63100e+01 7.44819e-01 2605 2016 3 2.62773e+01 5.26333e-01 2822 2016 4 2.68631e+01 7.55380e-01 2137 2016 5 2.75512e+01 5.49611e-01 1327 2016 6 2.77307e+01 9.71693e-01 1713 2016 7 2.79889e+01 5.77721e-01 1653 2016 8 2.85223e+01 6.10010e-01 2304 2016 9 2.89219e+01 7.95378e-01 2382 2016 10 2.86601e+01 1.07304e+00 2054 2016 11 2.88561e+01 7.37413e-01 1181 2016 12 2.74874e+01 7.28739e-01 2489 2017 1 2.63269e+01 6.68140e-01 2398 2017 2 2.64579e+01 5.22577e-01 2294 2017 3 2.62884e+01 5.49119e-01 2381 2017 4 2.66917e+01 8.55232e-01 1793 2017 5 2.69527e+01 9.30724e-01 2043 2017 6 2.77947e+01 7.50637e-01 2058 2017 7 2.82753e+01 5.99021e-01 2147 2017 8 2.84252e+01 7.01910e-01 1968 2017 9 2.82147e+01 1.17428e+00 1072 2017 10 2.82648e+01 7.78087e-01 2134 2017 11 2.80670e+01 5.90962e-01 1996 2017 12 2.73416e+01 6.74350e-01 3048 2018 1 2.65702e+01 5.66561e-01 2591 2018 2 2.59314e+01 6.77422e-01 2248 2018 3 2.62764e+01 6.83803e-01 2908 2018 4 2.66458e+01 4.84588e-01 2639 2018 5 2.68232e+01 6.09916e-01 2244 2018 6 2.69754e+01 7.57941e-01 1556 2018 7 2.71797e+01 6.29457e-01 964 2018 8 2.79792e+01 6.33219e-01 2613 2018 9 2.83215e+01 7.84096e-01 2227 2018 10 2.85893e+01 8.43301e-01 1808 2018 11 2.77663e+01 7.49200e-01 2551 2018 12 2.70422e+01 6.43701e-01 2417 2019 1 2.62461e+01 6.77153e-01 2710 2019 2 2.60541e+01 6.06503e-01 2610 2019 3 2.61127e+01 6.67964e-01 3174 2019 4 2.65338e+01 5.64927e-01 2680 2019 5 2.69534e+01 8.90398e-01 1450 2019 6 2.74251e+01 7.31672e-01 2158 2019 7 2.78631e+01 8.27089e-01 2261 2019 8 2.83187e+01 6.57148e-01 2937 2019 9 2.89281e+01 8.59874e-01 2157 2019 10 2.91561e+01 7.90068e-01 2637 2019 11 2.84728e+01 5.67081e-01 2986 2019 12 2.77271e+01 9.46590e-01 2574 2020 1 2.69289e+01 6.72843e-01 1881 2020 2 2.63309e+01 7.38223e-01 2791 2020 3 2.63632e+01 6.92611e-01 2552 2020 4 2.72014e+01 5.94915e-01 3260 2020 5 2.76379e+01 6.71900e-01 2318 2020 6 2.83233e+01 7.96440e-01 2314 2020 7 2.83519e+01 7.38128e-01 1646 2020 8 2.85461e+01 6.51077e-01 1978 2020 9 2.92336e+01 7.65219e-01 2449 2020 10 2.89084e+01 6.65534e-01 2343 2020 11 2.78814e+01 6.40051e-01 2548 2020 12 2.73221e+01 5.33528e-01 2910 2021 1 2.63034e+01 5.44380e-01 2660 2021 2 2.60412e+01 6.77493e-01 2488 2021 3 2.63334e+01 7.04553e-01 3120 2021 4 2.64953e+01 6.65805e-01 2292 2021 5 2.68754e+01 5.62375e-01 2313 2021 6 2.74770e+01 8.94139e-01 965 2021 7 2.75684e+01 7.32797e-01 1792 2021 8 2.78867e+01 7.81155e-01 2159 2021 9 2.90494e+01 9.46096e-01 2676 2021 10 2.90375e+01 8.43984e-01 2503 2021 11 2.83895e+01 5.78288e-01 2596 2021 12 2.74181e+01 6.01032e-01 2937 2022 1 2.66502e+01 5.76849e-01 3176 2022 2 2.61823e+01 5.13784e-01 2733 2022 3 2.60852e+01 5.83368e-01 2327 2022 4 2.65723e+01 8.81722e-01 1212 2022 5 2.70202e+01 6.75522e-01 1794 2022 6 2.77158e+01 7.90442e-01 2156 2022 7 2.77518e+01 6.69963e-01 1724 2022 8 2.82026e+01 8.45447e-01 2799 2022 9 2.88618e+01 7.16782e-01 1632 2022 10 2.88183e+01 6.77867e-01 2058 2022 11 2.77945e+01 5.33981e-01 2773 2022 12 2.68389e+01 5.44215e-01 3113 2023 1 2.63971e+01 5.05500e-01 2505 2023 2 2.57906e+01 5.93988e-01 2552 2023 3 2.60657e+01 6.98348e-01 3062 2023 4 2.67650e+01 7.26712e-01 2696 2023 5 2.78466e+01 7.89234e-01 2863 2023 6 2.81295e+01 7.57610e-01 2503 2023 7 2.84772e+01 4.91357e-01 1597 2023 8 2.92319e+01 6.64434e-01 2098 2023 9 2.95512e+01 8.26515e-01 2870 2023 10 2.93429e+01 7.68770e-01 2411 2023 11 2.85720e+01 6.89108e-01 2382 2023 12 2.79082e+01 6.86810e-01 3143 2024 1 2.68459e+01 5.92580e-01 2681 2024 2 2.67519e+01 5.40967e-01 2311 2024 3 2.71517e+01 5.54429e-01 3211 2024 4 2.71407e+01 3.56225e-01 384