YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.47729e+01 1.46851e-01 128 2000 3 2.48671e+01 3.21592e-01 480 2000 4 2.54742e+01 6.61157e-01 457 2000 5 2.63638e+01 1.94077e+00 465 2000 6 2.78545e+01 6.43971e-01 596 2000 7 2.91206e+01 1.32745e+00 618 2000 8 2.92910e+01 7.22637e-01 346 2000 9 2.93502e+01 7.92032e-01 418 2000 10 2.84941e+01 9.41249e-01 329 2000 11 2.63318e+01 7.54801e-01 340 2000 12 2.42991e+01 1.13419e+00 337 2001 1 2.33336e+01 1.20590e+00 525 2001 2 2.38680e+01 9.44629e-01 629 2001 3 2.41781e+01 5.62050e-01 602 2001 4 2.56668e+01 6.32184e-01 662 2001 5 2.62433e+01 1.24068e+00 444 2001 6 2.82261e+01 8.77921e-01 389 2001 7 2.86338e+01 1.45854e+00 617 2001 8 2.92369e+01 5.72336e-01 481 2001 9 2.86985e+01 1.19205e+00 303 2001 10 2.76127e+01 7.77366e-01 302 2001 11 2.64923e+01 1.02856e+00 459 2001 12 2.49368e+01 9.46973e-01 446 2002 1 2.40463e+01 1.26058e+00 682 2002 2 2.37861e+01 2.86447e-01 256 2002 3 2.59541e+01 1.00785e+00 453 2002 4 2.67605e+01 1.16800e+00 591 2002 5 2.74301e+01 7.40558e-01 577 2002 6 2.83899e+01 2.21170e-01 128 2002 7 2.91046e+01 9.42436e-01 1890 2002 8 2.92144e+01 9.36678e-01 1926 2002 9 2.87717e+01 6.96757e-01 1604 2002 10 2.81136e+01 4.55623e-01 3116 2002 11 2.71191e+01 1.22529e+00 1989 2002 12 2.49404e+01 1.48108e+00 1709 2003 1 2.35863e+01 1.09428e+00 2070 2003 2 2.34575e+01 1.19328e+00 2584 2003 3 2.55529e+01 1.01538e+00 2286 2003 4 2.55528e+01 8.94345e-01 2309 2003 5 2.74452e+01 1.10837e+00 2904 2003 6 2.80570e+01 8.92850e-01 1008 2003 7 2.87011e+01 9.82692e-01 1973 2003 8 2.96088e+01 1.43892e+00 1655 2003 9 2.89906e+01 8.48783e-01 1693 2003 10 2.83709e+01 1.01354e+00 2565 2003 11 2.68880e+01 8.54592e-01 1526 2003 12 2.50527e+01 1.28710e+00 1167 2004 1 2.51128e+01 1.07836e+00 2161 2004 2 2.40421e+01 8.83650e-01 2024 2004 3 2.49320e+01 1.06086e+00 1764 2004 4 2.48640e+01 9.05807e-01 2605 2004 5 2.61776e+01 1.11453e+00 2884 2004 6 2.87497e+01 7.80201e-01 2870 2004 7 2.94559e+01 1.31187e+00 2636 2004 8 3.02449e+01 1.08134e+00 1334 2004 9 2.88321e+01 1.03758e+00 1933 2004 10 2.77651e+01 7.90170e-01 2191 2004 11 2.67116e+01 1.04010e+00 2147 2004 12 2.55599e+01 1.40436e+00 1569 2005 1 2.42312e+01 7.81218e-01 2669 2005 2 2.36146e+01 1.10331e+00 1717 2005 3 2.41730e+01 8.29814e-01 2342 2005 4 2.43536e+01 9.13626e-01 2963 2005 5 2.60610e+01 1.37588e+00 2469 2005 6 2.81055e+01 9.27967e-01 1256 2005 7 2.91179e+01 8.80159e-01 2824 2005 8 3.00011e+01 1.06579e+00 2579 2005 9 2.93857e+01 1.11775e+00 2114 2005 10 2.74989e+01 1.10667e+00 1458 2005 11 2.59420e+01 8.07103e-01 2732 2005 12 2.46400e+01 1.14430e+00 2566 2006 1 2.35602e+01 7.62984e-01 2111 2006 2 2.40011e+01 9.12418e-01 2435 2006 3 2.48822e+01 1.09100e+00 2991 2006 4 2.57734e+01 9.88270e-01 2939 2006 5 2.69725e+01 9.47389e-01 2683 2006 6 2.82871e+01 8.41757e-01 2187 2006 7 2.89461e+01 1.02022e+00 1499 2006 8 2.95429e+01 8.46656e-01 1817 2006 9 3.00710e+01 1.03484e+00 2205 2006 10 2.85496e+01 1.04317e+00 2534 2006 11 2.63016e+01 1.13654e+00 1824 2006 12 2.49637e+01 1.27221e+00 1437 2007 1 2.48174e+01 1.15690e+00 2221 2007 2 2.42296e+01 8.66513e-01 1544 2007 3 2.44042e+01 8.25814e-01 1449 2007 4 2.52121e+01 1.06029e+00 3127 2007 5 2.66825e+01 9.09600e-01 2487 2007 6 2.79281e+01 1.13219e+00 1875 2007 7 2.99038e+01 7.84065e-01 2260 2007 8 2.98597e+01 9.64515e-01 2614 2007 9 2.97971e+01 8.79780e-01 1616 2007 10 2.81208e+01 7.95435e-01 1534 2007 11 2.65236e+01 8.80396e-01 2596 2007 12 2.54001e+01 8.84647e-01 2632 2008 1 2.43817e+01 8.78514e-01 1994 2008 2 2.46910e+01 9.78331e-01 2180 2008 3 2.42703e+01 8.74114e-01 1746 2008 4 2.54778e+01 1.17273e+00 3083 2008 5 2.69020e+01 1.19597e+00 3478 2008 6 2.80879e+01 9.10724e-01 2148 2008 7 2.88424e+01 1.24042e+00 2090 2008 8 2.95356e+01 1.55901e+00 1843 2008 9 2.81156e+01 9.24891e-01 2204 2008 10 2.80747e+01 1.04886e+00 1615 2008 11 2.59811e+01 8.62387e-01 2120 2008 12 2.44885e+01 9.78232e-01 2302 2009 1 2.34701e+01 1.01620e+00 2434 2009 2 2.33735e+01 8.95386e-01 2011 2009 3 2.37910e+01 9.09575e-01 2269 2009 4 2.49838e+01 7.25406e-01 2650 2009 5 2.65930e+01 1.07820e+00 2771 2009 6 2.90428e+01 1.11579e+00 2058 2009 7 2.94512e+01 9.58510e-01 2047 2009 8 2.98928e+01 7.32798e-01 2584 2009 9 2.95957e+01 8.09752e-01 1429 2009 10 2.89935e+01 1.16336e+00 2688 2009 11 2.74670e+01 9.57768e-01 1758 2009 12 2.58212e+01 7.73537e-01 1463 2010 1 2.42808e+01 1.41783e+00 1679 2010 2 2.32745e+01 1.10306e+00 1482 2010 3 2.26065e+01 1.30102e+00 2143 2010 4 2.43148e+01 1.05171e+00 2006 2010 5 2.70671e+01 1.24175e+00 3055 2010 6 2.95951e+01 1.00915e+00 2943 2010 7 2.88932e+01 1.52273e+00 1807 2010 8 3.00721e+01 1.23064e+00 1986 2010 9 2.94540e+01 7.09056e-01 2043 2010 10 2.79437e+01 8.73778e-01 2523 2010 11 2.65615e+01 1.19983e+00 2050 2010 12 2.47389e+01 1.41332e+00 3026 2011 1 2.30172e+01 1.37719e+00 2081 2011 2 2.28610e+01 9.29715e-01 2408 2011 3 2.48406e+01 1.04340e+00 2682 2011 4 2.60261e+01 7.36334e-01 3386 2011 5 2.70703e+01 7.03536e-01 3121 2011 6 2.82291e+01 1.52655e+00 2328 2011 7 2.94812e+01 1.25662e+00 2420 2011 8 2.99510e+01 1.24116e+00 1898 2011 9 2.98198e+01 9.41036e-01 2058 2011 10 2.85232e+01 1.00121e+00 1264 2011 11 2.58598e+01 9.62346e-01 2399 2011 12 2.46784e+01 1.14762e+00 2284 2012 1 2.38342e+01 1.08332e+00 2139 2012 2 2.46731e+01 6.45261e-01 1674 2012 3 2.47889e+01 1.07943e+00 2540 2012 4 2.58716e+01 1.13192e+00 2229 2012 5 2.65301e+01 1.20577e+00 1921 2012 6 2.80705e+01 1.01476e+00 1595 2012 7 2.86353e+01 8.36274e-01 2313 2012 8 2.93035e+01 1.53913e+00 1929 2012 9 2.91147e+01 1.05075e+00 1966 2012 10 2.80942e+01 1.08123e+00 2414 2012 11 2.73079e+01 9.25586e-01 2330 2012 12 2.57313e+01 9.13898e-01 2145 2013 1 2.45696e+01 8.59276e-01 2299 2013 2 2.44348e+01 1.06073e+00 2166 2013 3 2.43447e+01 9.52724e-01 2027 2013 4 2.59166e+01 1.03274e+00 2471 2013 5 2.66681e+01 7.79496e-01 2819 2013 6 2.80742e+01 6.68569e-01 1625 2013 7 2.88315e+01 1.18731e+00 1484 2013 8 2.91171e+01 1.22529e+00 1845 2013 9 2.90903e+01 6.78741e-01 1581 2013 10 2.84492e+01 1.05310e+00 2763 2013 11 2.73641e+01 8.60695e-01 1492 2013 12 2.58068e+01 9.74734e-01 1733 2014 1 2.54509e+01 1.01458e+00 2092 2014 2 2.53402e+01 8.52396e-01 3020 2014 3 2.49339e+01 1.03284e+00 2471 2014 4 2.59828e+01 9.81332e-01 2470 2014 5 2.67763e+01 1.03738e+00 2047 2014 6 2.84291e+01 1.37884e+00 2093 2014 7 2.97935e+01 7.88570e-01 2053 2014 8 3.05803e+01 9.62509e-01 3034 2014 9 2.95034e+01 1.06419e+00 1664 2014 10 2.82960e+01 1.13244e+00 2644 2014 11 2.63139e+01 1.29312e+00 2275 2014 12 2.55628e+01 9.94650e-01 2045 2015 1 2.49732e+01 9.33710e-01 1951 2015 2 2.42566e+01 1.16057e+00 2101 2015 3 2.50812e+01 1.07755e+00 3040 2015 4 2.65127e+01 1.20443e+00 3173 2015 5 2.71338e+01 1.01050e+00 3027 2015 6 2.87684e+01 1.07730e+00 1779 2015 7 2.97596e+01 1.01322e+00 2174 2015 8 3.01618e+01 1.49622e+00 2031 2015 9 2.98739e+01 1.28683e+00 1486 2015 10 2.83688e+01 1.27596e+00 2020 2015 11 2.75229e+01 8.73035e-01 2289 2015 12 2.57303e+01 8.01192e-01 1526 2016 1 2.59220e+01 7.75203e-01 965 2016 2 2.53193e+01 1.07175e+00 1567 2016 3 2.47318e+01 1.32136e+00 1184 2016 4 2.63156e+01 7.27690e-01 2398 2016 5 2.74103e+01 1.10757e+00 2711 2016 6 2.88264e+01 9.72791e-01 2252 2016 7 2.96041e+01 6.98819e-01 2583 2016 8 3.02669e+01 1.11835e+00 1703 2016 9 2.94918e+01 1.49159e+00 2502 2016 10 2.89921e+01 7.04289e-01 1589 2016 11 2.73051e+01 8.64680e-01 2041 2016 12 2.59382e+01 1.00104e+00 2207 2017 1 2.52701e+01 1.07054e+00 2245 2017 2 2.46807e+01 9.43713e-01 2576 2017 3 2.53341e+01 9.59866e-01 2630 2017 4 2.59455e+01 8.27605e-01 1584 2017 5 2.71716e+01 1.16425e+00 3020 2017 6 2.82705e+01 1.37960e+00 1322 2017 7 2.96963e+01 8.00002e-01 2449 2017 8 3.00614e+01 1.14103e+00 2399 2017 9 2.95950e+01 1.01273e+00 2787 2017 10 2.86135e+01 7.72115e-01 1937 2017 11 2.67544e+01 6.81915e-01 2809 2017 12 2.60034e+01 1.10797e+00 3098 2018 1 2.43378e+01 1.53663e+00 1234 2018 2 2.46293e+01 1.06562e+00 2594 2018 3 2.55367e+01 9.15439e-01 3516 2018 4 2.58813e+01 1.00054e+00 2785 2018 5 2.61037e+01 1.09863e+00 796 2018 6 2.87091e+01 1.08035e+00 1724 2018 7 3.02539e+01 9.33857e-01 1910 2018 8 2.97989e+01 8.34708e-01 2660 2018 9 2.97456e+01 8.52830e-01 2381 2018 10 2.83547e+01 7.32570e-01 2916 2018 11 2.73617e+01 9.48364e-01 2131 2018 12 2.57198e+01 1.38109e+00 1789 2019 1 2.51829e+01 9.23593e-01 2210 2019 2 2.50403e+01 1.05875e+00 2661 2019 3 2.60175e+01 9.56293e-01 2574 2019 4 2.60107e+01 7.76176e-01 2847 2019 5 2.73974e+01 9.10343e-01 2798 2019 6 2.98373e+01 1.28056e+00 2291 2019 7 2.97134e+01 1.20775e+00 2101 2019 8 3.05593e+01 9.85591e-01 1951 2019 9 2.91983e+01 1.25162e+00 2180 2019 10 2.85339e+01 7.79915e-01 2402 2019 11 2.79420e+01 9.71197e-01 2499 2019 12 2.58868e+01 9.49306e-01 2179 2020 1 2.54484e+01 1.00423e+00 2586 2020 2 2.56409e+01 1.52393e+00 1988 2020 3 2.53896e+01 8.10511e-01 3274 2020 4 2.67730e+01 9.65183e-01 2314 2020 5 2.75342e+01 8.98000e-01 1898 2020 6 2.91849e+01 1.15282e+00 1589 2020 7 2.98160e+01 1.11908e+00 2301 2020 8 3.01863e+01 1.23452e+00 2352 2020 9 2.97469e+01 8.52662e-01 2197 2020 10 2.87544e+01 1.17896e+00 2042 2020 11 2.69803e+01 7.04425e-01 1636 2020 12 2.59787e+01 1.32192e+00 2202 2021 1 2.43191e+01 1.06850e+00 2228 2021 2 2.45418e+01 9.68529e-01 2798 2021 3 2.52174e+01 8.96415e-01 2644 2021 4 2.59630e+01 9.06666e-01 2500 2021 5 2.71530e+01 9.28533e-01 2582 2021 6 2.77426e+01 1.02642e+00 1256 2021 7 2.94413e+01 1.09946e+00 2244 2021 8 3.00060e+01 8.17909e-01 2287 2021 9 2.97370e+01 1.06870e+00 2487 2021 10 2.90215e+01 6.89822e-01 2529 2021 11 2.67535e+01 6.86964e-01 1714 2021 12 2.61037e+01 8.35246e-01 2501 2022 1 2.54304e+01 8.07327e-01 2187 2022 2 2.47544e+01 1.04234e+00 2261 2022 3 2.56932e+01 9.08712e-01 2900 2022 4 2.61748e+01 1.15161e+00 1279 2022 5 2.75789e+01 1.01050e+00 2332 2022 6 2.89366e+01 1.16385e+00 2117 2022 7 2.97203e+01 7.93282e-01 2996 2022 8 2.99914e+01 9.05782e-01 2802 2022 9 3.05202e+01 1.04345e+00 2202 2022 10 2.79093e+01 8.82656e-01 1949 2022 11 2.73984e+01 6.85884e-01 2546 2022 12 2.62243e+01 9.23343e-01 1719 2023 1 2.54604e+01 9.65777e-01 3007 2023 2 2.54059e+01 1.17947e+00 2702 2023 3 2.54748e+01 9.33770e-01 2862 2023 4 2.65824e+01 8.14570e-01 2049 2023 5 2.76015e+01 8.21709e-01 2622 2023 6 2.92964e+01 8.69182e-01 2260 2023 7 3.12905e+01 9.98500e-01 1936 2023 8 3.08599e+01 8.05811e-01 2506 2023 9 3.05718e+01 1.04559e+00 2192 2023 10 2.90786e+01 1.25488e+00 2174 2023 11 2.76001e+01 7.11204e-01 1898 2023 12 2.63385e+01 8.20433e-01 1304 2024 1 2.51819e+01 9.08565e-01 1545 2024 2 2.43623e+01 8.22120e-01 2209 2024 3 2.51870e+01 9.51751e-01 2233 2024 4 2.48644e+01 6.35489e-01 297