YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.48201e+01 6.32515e-01 183 2000 3 2.48911e+01 9.39816e-01 681 2000 4 2.58145e+01 4.93809e-01 432 2000 5 2.66999e+01 8.81089e-01 672 2000 6 2.69288e+01 7.52810e-01 274 2000 7 2.70629e+01 6.69414e-01 519 2000 8 2.82699e+01 2.79042e-01 256 2000 9 2.87048e+01 5.10874e-01 616 2000 10 2.90081e+01 4.99292e-01 618 2000 11 2.79534e+01 6.87266e-01 719 2000 12 2.67566e+01 5.09860e-01 778 2001 1 2.60599e+01 5.92698e-01 640 2001 2 2.59787e+01 3.08710e-01 512 2001 3 2.55223e+01 7.60042e-01 728 2001 4 2.61382e+01 7.94508e-01 500 2001 5 2.67407e+01 6.28281e-01 597 2001 6 2.75649e+01 1.05361e+00 208 2001 7 2.77386e+01 1.16242e+00 463 2001 8 2.82976e+01 5.88888e-01 557 2001 9 2.86874e+01 8.03886e-01 487 2001 10 2.82978e+01 7.94980e-01 676 2001 11 2.77233e+01 8.11837e-01 297 2001 12 2.70517e+01 5.95808e-01 425 2002 1 2.62895e+01 4.67800e-01 598 2002 2 2.55376e+01 1.14803e+00 607 2002 3 2.56839e+01 7.61424e-01 570 2002 4 2.65957e+01 5.51419e-01 539 2002 5 2.67177e+01 6.39897e-01 517 2002 6 2.71596e+01 7.22797e-01 272 2002 7 2.74572e+01 7.87813e-01 2412 2002 8 2.82474e+01 7.26993e-01 1915 2002 9 2.87352e+01 8.06529e-01 1421 2002 10 2.86600e+01 6.50886e-01 2510 2002 11 2.82939e+01 7.12545e-01 3059 2002 12 2.70960e+01 5.76983e-01 2838 2003 1 2.65180e+01 6.08578e-01 2892 2003 2 2.62942e+01 5.94424e-01 1992 2003 3 2.65270e+01 5.12938e-01 2678 2003 4 2.67398e+01 7.56519e-01 1722 2003 5 2.70170e+01 6.14920e-01 2138 2003 6 2.64484e+01 9.70662e-01 900 2003 7 2.70627e+01 6.88091e-01 1210 2003 8 2.78606e+01 7.27182e-01 2524 2003 9 2.85647e+01 1.11297e+00 1731 2003 10 2.89068e+01 8.21737e-01 2373 2003 11 2.77738e+01 7.71447e-01 1505 2003 12 2.68107e+01 5.34049e-01 2096 2004 1 2.63203e+01 5.53486e-01 2863 2004 2 2.61753e+01 5.91008e-01 2312 2004 3 2.58466e+01 5.68795e-01 2517 2004 4 2.69898e+01 5.14049e-01 2630 2004 5 2.64506e+01 9.51291e-01 1475 2004 6 2.72978e+01 8.25658e-01 2056 2004 7 2.75695e+01 7.21209e-01 1546 2004 8 2.80222e+01 8.94238e-01 2057 2004 9 2.85673e+01 9.07088e-01 1706 2004 10 2.87582e+01 7.06322e-01 1806 2004 11 2.73613e+01 7.56557e-01 1953 2004 12 2.64906e+01 6.13516e-01 2725 2005 1 2.55034e+01 8.13819e-01 1879 2005 2 2.49938e+01 6.39663e-01 2070 2005 3 2.61201e+01 7.29509e-01 3555 2005 4 2.73064e+01 8.22526e-01 1880 2005 5 2.78497e+01 7.76368e-01 1143 2005 6 2.83182e+01 9.08765e-01 1851 2005 7 2.85271e+01 7.62740e-01 1297 2005 8 2.91461e+01 8.64854e-01 1714 2005 9 2.98207e+01 7.63085e-01 1838 2005 10 2.87098e+01 8.96755e-01 1524 2005 11 2.82755e+01 7.85801e-01 2029 2005 12 2.67533e+01 7.58636e-01 2667 2006 1 2.59799e+01 5.74896e-01 2277 2006 2 2.58220e+01 7.91780e-01 2718 2006 3 2.61400e+01 6.21066e-01 2849 2006 4 2.69949e+01 8.13074e-01 2307 2006 5 2.77378e+01 6.38045e-01 2015 2006 6 2.78598e+01 8.46969e-01 1364 2006 7 2.79219e+01 7.45563e-01 1414 2006 8 2.78279e+01 8.52083e-01 1633 2006 9 2.90785e+01 9.07377e-01 2520 2006 10 2.89289e+01 8.15207e-01 1662 2006 11 2.81392e+01 6.06055e-01 2816 2006 12 2.71194e+01 6.97112e-01 2651 2007 1 2.62432e+01 4.58429e-01 2855 2007 2 2.62367e+01 5.71738e-01 3050 2007 3 2.63697e+01 6.27932e-01 2546 2007 4 2.68968e+01 8.60158e-01 1834 2007 5 2.77747e+01 1.01487e+00 1754 2007 6 2.78898e+01 9.73712e-01 1433 2007 7 2.80723e+01 6.18957e-01 1528 2007 8 2.82848e+01 9.16848e-01 1417 2007 9 2.88992e+01 5.03596e-01 2372 2007 10 2.88556e+01 8.62702e-01 1563 2007 11 2.78758e+01 7.27782e-01 1606 2007 12 2.66355e+01 5.44313e-01 2723 2008 1 2.62062e+01 5.03132e-01 2552 2008 2 2.55933e+01 4.61374e-01 2767 2008 3 2.56111e+01 5.36903e-01 2779 2008 4 2.58398e+01 7.71931e-01 2355 2008 5 2.68105e+01 8.47270e-01 2638 2008 6 2.75334e+01 9.39577e-01 1626 2008 7 2.78653e+01 6.60663e-01 2036 2008 8 2.81662e+01 8.33562e-01 1988 2008 9 2.83817e+01 9.26830e-01 1360 2008 10 2.85116e+01 7.51458e-01 2276 2008 11 2.79117e+01 1.07037e+00 2236 2008 12 2.60608e+01 6.40643e-01 2347 2009 1 2.58048e+01 4.84254e-01 3260 2009 2 2.56480e+01 5.90652e-01 1975 2009 3 2.50256e+01 6.83028e-01 1799 2009 4 2.60231e+01 6.52318e-01 3026 2009 5 2.65221e+01 9.22387e-01 1318 2009 6 2.72600e+01 9.57253e-01 1262 2009 7 2.75562e+01 7.64170e-01 957 2009 8 2.78309e+01 6.83031e-01 2153 2009 9 2.87014e+01 9.75748e-01 2195 2009 10 2.87069e+01 6.74673e-01 2759 2009 11 2.81884e+01 6.00785e-01 2391 2009 12 2.75142e+01 5.53882e-01 2681 2010 1 2.67200e+01 5.92930e-01 2708 2010 2 2.67291e+01 6.47799e-01 2273 2010 3 2.71421e+01 8.39723e-01 2741 2010 4 2.67282e+01 8.60868e-01 1217 2010 5 2.79132e+01 9.37803e-01 1208 2010 6 2.85744e+01 6.21662e-01 1284 2010 7 2.82133e+01 8.28150e-01 1179 2010 8 2.90348e+01 8.45990e-01 2101 2010 9 2.86858e+01 8.49725e-01 1676 2010 10 2.87799e+01 5.86005e-01 2154 2010 11 2.72609e+01 6.55630e-01 1394 2010 12 2.64732e+01 6.64990e-01 1488 2011 1 2.58616e+01 6.77650e-01 2580 2011 2 2.59503e+01 5.03091e-01 2877 2011 3 2.55448e+01 6.16602e-01 2885 2011 4 2.62520e+01 6.84608e-01 2352 2011 5 2.69377e+01 8.39666e-01 882 2011 6 2.81806e+01 6.48934e-01 1560 2011 7 2.80708e+01 5.64888e-01 1674 2011 8 2.80422e+01 5.86546e-01 1397 2011 9 2.82885e+01 7.61251e-01 1618 2011 10 2.86240e+01 5.54173e-01 2881 2011 11 2.79296e+01 7.32498e-01 1624 2011 12 2.69441e+01 7.31314e-01 2070 2012 1 2.59697e+01 8.52380e-01 2101 2012 2 2.58233e+01 7.42215e-01 2169 2012 3 2.57904e+01 4.91139e-01 2191 2012 4 2.63239e+01 1.11840e+00 1991 2012 5 2.65323e+01 9.94568e-01 1673 2012 6 2.74680e+01 8.37317e-01 1781 2012 7 2.75360e+01 8.70617e-01 1586 2012 8 2.78804e+01 6.38858e-01 1605 2012 9 2.87704e+01 8.23822e-01 1704 2012 10 2.88491e+01 9.42608e-01 1549 2012 11 2.86499e+01 6.55500e-01 2353 2012 12 2.73128e+01 7.87398e-01 1840 2013 1 2.61223e+01 4.74294e-01 2312 2013 2 2.57035e+01 5.06927e-01 3019 2013 3 2.60867e+01 6.86868e-01 2547 2013 4 2.65239e+01 6.45381e-01 2990 2013 5 2.74628e+01 8.51147e-01 1701 2013 6 2.65248e+01 9.79323e-01 815 2013 7 2.76074e+01 9.31015e-01 1810 2013 8 2.85795e+01 6.44418e-01 2167 2013 9 2.90304e+01 7.24754e-01 1945 2013 10 2.91049e+01 7.30946e-01 2103 2013 11 2.81270e+01 6.16782e-01 2363 2013 12 2.68238e+01 5.45462e-01 2101 2014 1 2.61208e+01 4.80427e-01 3202 2014 2 2.59722e+01 6.24606e-01 2950 2014 3 2.63672e+01 6.34678e-01 3212 2014 4 2.66068e+01 7.44428e-01 2946 2014 5 2.71536e+01 8.89231e-01 1874 2014 6 2.70161e+01 1.18695e+00 1387 2014 7 2.74670e+01 8.43228e-01 1049 2014 8 2.79177e+01 6.75273e-01 1496 2014 9 2.86860e+01 8.16986e-01 1919 2014 10 2.88428e+01 7.83873e-01 2376 2014 11 2.81809e+01 8.26959e-01 2535 2014 12 2.71148e+01 6.03476e-01 2961 2015 1 2.64471e+01 6.46871e-01 2661 2015 2 2.64357e+01 5.99766e-01 2438 2015 3 2.61408e+01 5.23239e-01 2615 2015 4 2.63895e+01 6.69637e-01 2703 2015 5 2.70297e+01 7.88124e-01 2168 2015 6 2.76159e+01 9.75080e-01 1254 2015 7 2.71228e+01 1.16790e+00 1559 2015 8 2.79993e+01 9.32763e-01 2200 2015 9 2.88781e+01 7.68720e-01 2627 2015 10 2.92466e+01 7.71380e-01 2233 2015 11 2.82920e+01 8.83523e-01 1528 2015 12 2.71571e+01 7.71747e-01 2169 2016 1 2.66065e+01 5.39623e-01 2554 2016 2 2.63671e+01 6.08219e-01 2519 2016 3 2.62742e+01 6.67289e-01 2960 2016 4 2.70743e+01 6.28271e-01 1834 2016 5 2.73010e+01 6.49005e-01 1465 2016 6 2.77166e+01 8.56088e-01 1825 2016 7 2.79862e+01 8.21156e-01 1521 2016 8 2.85877e+01 5.96956e-01 2196 2016 9 2.91924e+01 6.53470e-01 2334 2016 10 2.88499e+01 8.04987e-01 1883 2016 11 2.85694e+01 6.74730e-01 1142 2016 12 2.74606e+01 6.02120e-01 2319 2017 1 2.61017e+01 6.22081e-01 2307 2017 2 2.62910e+01 6.47094e-01 2494 2017 3 2.62773e+01 4.09792e-01 2231 2017 4 2.66673e+01 8.81923e-01 1776 2017 5 2.71934e+01 6.26096e-01 2021 2017 6 2.79190e+01 7.72479e-01 2138 2017 7 2.83240e+01 6.73270e-01 2082 2017 8 2.83753e+01 7.44194e-01 1973 2017 9 2.81763e+01 1.43890e+00 1317 2017 10 2.80815e+01 8.87112e-01 1607 2017 11 2.82305e+01 7.06610e-01 2191 2017 12 2.72051e+01 8.37191e-01 2225 2018 1 2.66215e+01 4.83927e-01 2200 2018 2 2.57853e+01 5.19993e-01 2106 2018 3 2.63377e+01 7.65464e-01 2892 2018 4 2.66109e+01 6.66727e-01 2593 2018 5 2.68859e+01 5.72100e-01 2378 2018 6 2.72372e+01 7.58214e-01 1533 2018 7 2.70669e+01 7.97697e-01 695 2018 8 2.82032e+01 5.58893e-01 2605 2018 9 2.86470e+01 7.11662e-01 1815 2018 10 2.86716e+01 6.08129e-01 1936 2018 11 2.75897e+01 6.66995e-01 2341 2018 12 2.69498e+01 6.72361e-01 2954 2019 1 2.61814e+01 6.47616e-01 2656 2019 2 2.61319e+01 5.76884e-01 2352 2019 3 2.61624e+01 6.22566e-01 3123 2019 4 2.64837e+01 6.53658e-01 2697 2019 5 2.69119e+01 1.25317e+00 1525 2019 6 2.76295e+01 6.60883e-01 2539 2019 7 2.79699e+01 7.17447e-01 2321 2019 8 2.83574e+01 5.64563e-01 2227 2019 9 2.89448e+01 7.95942e-01 1951 2019 10 2.91453e+01 7.35970e-01 2453 2019 11 2.84517e+01 7.52105e-01 2851 2019 12 2.79921e+01 7.90248e-01 2076 2020 1 2.68356e+01 5.29364e-01 2106 2020 2 2.65258e+01 5.15486e-01 2938 2020 3 2.64570e+01 6.11932e-01 1822 2020 4 2.72284e+01 6.78039e-01 2986 2020 5 2.76902e+01 8.15388e-01 1763 2020 6 2.82577e+01 9.19528e-01 2266 2020 7 2.83662e+01 9.76175e-01 1853 2020 8 2.86026e+01 6.43143e-01 1935 2020 9 2.95374e+01 7.99897e-01 2172 2020 10 2.91129e+01 6.69276e-01 2377 2020 11 2.80440e+01 6.89758e-01 2029 2020 12 2.73283e+01 5.29111e-01 2799 2021 1 2.63657e+01 5.03969e-01 2400 2021 2 2.61368e+01 5.02876e-01 2438 2021 3 2.61700e+01 6.29114e-01 3021 2021 4 2.66837e+01 5.86116e-01 2084 2021 5 2.68708e+01 8.94143e-01 2515 2021 6 2.75459e+01 7.47808e-01 1382 2021 7 2.76910e+01 6.87908e-01 1815 2021 8 2.79731e+01 6.19484e-01 1661 2021 9 2.90920e+01 7.40457e-01 2665 2021 10 2.91695e+01 7.71456e-01 2428 2021 11 2.82814e+01 7.07855e-01 2735 2021 12 2.72004e+01 7.20015e-01 2928 2022 1 2.66583e+01 4.18050e-01 3110 2022 2 2.61380e+01 6.98919e-01 2516 2022 3 2.60086e+01 6.36999e-01 2422 2022 4 2.66561e+01 7.45707e-01 894 2022 5 2.69849e+01 6.76668e-01 2348 2022 6 2.76927e+01 8.77994e-01 1997 2022 7 2.78277e+01 6.92558e-01 1667 2022 8 2.84401e+01 8.03088e-01 2420 2022 9 2.87719e+01 8.15778e-01 1514 2022 10 2.89209e+01 4.46794e-01 1634 2022 11 2.78198e+01 5.80790e-01 2970 2022 12 2.68131e+01 5.50519e-01 2877 2023 1 2.64088e+01 4.89897e-01 3011 2023 2 2.56979e+01 4.67036e-01 2759 2023 3 2.61508e+01 8.49370e-01 2756 2023 4 2.66543e+01 8.25440e-01 2322 2023 5 2.77997e+01 7.68903e-01 2676 2023 6 2.82318e+01 6.44930e-01 2101 2023 7 2.84502e+01 8.91304e-01 1561 2023 8 2.92905e+01 7.80923e-01 1604 2023 9 2.97117e+01 5.53809e-01 2584 2023 10 2.96789e+01 8.95329e-01 2323 2023 11 2.87571e+01 7.80948e-01 1992 2023 12 2.77178e+01 7.12806e-01 2890 2024 1 2.69839e+01 4.80044e-01 2672 2024 2 2.66721e+01 5.23078e-01 2253 2024 3 2.70492e+01 5.65845e-01 3013 2024 4 2.71328e+01 3.51712e-01 217