YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.34100e+01 8.02014e-01 151 2000 3 2.44198e+01 3.58779e-01 404 2000 4 2.49721e+01 1.22590e+00 544 2000 5 2.64122e+01 1.42297e+00 435 2000 6 2.73876e+01 1.25691e+00 366 2000 7 2.98008e+01 8.51036e-01 500 2000 8 2.95633e+01 5.14098e-01 243 2000 9 2.83041e+01 2.17403e+00 507 2000 10 2.79997e+01 7.95628e-01 713 2000 11 2.62486e+01 5.52084e-01 512 2000 12 2.40436e+01 1.11986e+00 332 2001 1 2.28987e+01 7.96705e-01 551 2001 2 2.36890e+01 1.05910e+00 640 2001 3 2.38313e+01 8.08545e-01 768 2001 4 2.53737e+01 9.82355e-01 680 2001 5 2.55699e+01 5.64379e-01 384 2001 6 2.84893e+01 1.20848e+00 116 2001 7 2.81380e+01 1.04588e+00 453 2001 8 2.92124e+01 6.98698e-01 391 2001 9 2.80817e+01 1.70509e+00 226 2001 10 2.76604e+01 8.24625e-01 464 2001 11 2.64020e+01 6.91882e-01 445 2001 12 2.49567e+01 8.11040e-01 513 2002 1 2.34014e+01 7.11802e-01 346 2002 2 2.40594e+01 3.63524e-01 194 2002 3 2.45414e+01 9.32114e-01 498 2002 4 2.64843e+01 5.24615e-01 626 2002 5 2.72126e+01 5.36175e-01 674 2002 6 2.85476e+01 6.59744e-01 200 2002 7 2.89561e+01 1.00151e+00 2110 2002 8 2.93804e+01 1.01611e+00 1742 2002 9 2.85068e+01 1.16220e+00 1544 2002 10 2.81299e+01 5.91681e-01 2839 2002 11 2.70233e+01 1.06604e+00 2191 2002 12 2.47897e+01 8.55697e-01 2270 2003 1 2.25364e+01 1.18872e+00 2361 2003 2 2.22681e+01 8.46764e-01 2563 2003 3 2.53564e+01 9.23170e-01 2398 2003 4 2.53387e+01 1.06307e+00 2313 2003 5 2.72478e+01 1.09378e+00 2865 2003 6 2.89648e+01 9.71720e-01 1270 2003 7 2.87180e+01 1.18680e+00 1749 2003 8 2.97977e+01 8.32471e-01 1337 2003 9 2.94567e+01 1.13727e+00 1411 2003 10 2.85862e+01 1.13369e+00 2592 2003 11 2.69432e+01 7.39189e-01 2168 2003 12 2.46709e+01 1.09759e+00 1847 2004 1 2.48108e+01 8.81210e-01 2718 2004 2 2.38101e+01 1.01306e+00 2182 2004 3 2.43322e+01 1.13350e+00 2246 2004 4 2.41750e+01 7.88902e-01 2331 2004 5 2.59938e+01 9.42170e-01 2358 2004 6 2.86561e+01 1.21103e+00 2352 2004 7 2.92035e+01 1.28969e+00 1980 2004 8 3.01649e+01 1.09419e+00 2039 2004 9 2.91596e+01 1.37825e+00 1702 2004 10 2.76894e+01 1.33509e+00 2339 2004 11 2.66901e+01 7.61728e-01 2472 2004 12 2.49896e+01 1.10936e+00 1931 2005 1 2.39705e+01 6.10096e-01 2629 2005 2 2.33465e+01 8.00291e-01 1951 2005 3 2.36209e+01 8.98824e-01 2191 2005 4 2.42126e+01 8.73635e-01 2853 2005 5 2.60926e+01 1.43033e+00 2644 2005 6 2.77936e+01 1.18071e+00 1523 2005 7 2.89361e+01 1.16687e+00 2085 2005 8 3.01381e+01 1.04991e+00 2476 2005 9 2.94937e+01 1.02727e+00 2335 2005 10 2.77501e+01 8.11548e-01 1546 2005 11 2.55113e+01 8.12039e-01 2544 2005 12 2.42199e+01 8.52823e-01 2751 2006 1 2.33624e+01 6.89770e-01 2168 2006 2 2.31302e+01 7.74068e-01 2256 2006 3 2.44429e+01 1.10089e+00 2877 2006 4 2.57883e+01 1.07351e+00 3171 2006 5 2.70529e+01 1.01626e+00 2604 2006 6 2.86321e+01 9.77970e-01 2038 2006 7 2.88127e+01 1.17599e+00 1379 2006 8 2.97418e+01 9.60282e-01 1891 2006 9 3.00902e+01 9.60413e-01 2335 2006 10 2.86240e+01 6.27123e-01 2451 2006 11 2.60120e+01 7.99700e-01 1469 2006 12 2.49100e+01 7.33735e-01 1046 2007 1 2.49097e+01 8.05205e-01 1757 2007 2 2.34883e+01 8.57438e-01 1535 2007 3 2.43714e+01 7.21585e-01 2212 2007 4 2.48542e+01 8.56641e-01 2882 2007 5 2.69362e+01 8.83608e-01 2693 2007 6 2.78421e+01 1.46535e+00 2023 2007 7 3.01560e+01 9.59619e-01 2572 2007 8 2.97725e+01 9.38579e-01 2692 2007 9 2.99822e+01 8.10086e-01 1748 2007 10 2.81958e+01 1.01660e+00 1439 2007 11 2.69561e+01 7.19684e-01 2255 2007 12 2.53476e+01 6.46920e-01 2657 2008 1 2.41821e+01 8.72178e-01 2185 2008 2 2.41359e+01 1.13129e+00 2463 2008 3 2.38559e+01 9.08689e-01 2193 2008 4 2.52063e+01 5.88337e-01 3336 2008 5 2.67996e+01 9.77996e-01 3290 2008 6 2.80342e+01 8.22152e-01 2180 2008 7 2.85436e+01 1.36792e+00 2011 2008 8 2.99773e+01 9.21653e-01 2222 2008 9 2.86985e+01 8.32695e-01 1594 2008 10 2.81133e+01 9.10466e-01 1830 2008 11 2.56715e+01 6.91157e-01 2464 2008 12 2.40855e+01 7.82730e-01 2310 2009 1 2.28071e+01 1.15481e+00 2346 2009 2 2.22931e+01 9.59632e-01 2483 2009 3 2.36389e+01 1.08225e+00 2125 2009 4 2.49588e+01 6.47078e-01 2605 2009 5 2.64177e+01 1.30574e+00 3396 2009 6 2.89956e+01 1.35043e+00 1755 2009 7 2.96942e+01 8.52226e-01 2476 2009 8 2.96595e+01 7.09543e-01 2274 2009 9 2.99027e+01 9.74061e-01 1907 2009 10 2.90620e+01 1.11090e+00 2454 2009 11 2.71281e+01 7.64804e-01 1598 2009 12 2.53115e+01 1.05946e+00 2041 2010 1 2.37489e+01 1.23108e+00 1669 2010 2 2.24548e+01 1.23037e+00 1544 2010 3 2.15900e+01 9.34636e-01 2253 2010 4 2.42957e+01 1.19940e+00 1897 2010 5 2.71562e+01 1.12306e+00 3005 2010 6 2.98465e+01 9.03228e-01 2503 2010 7 2.92361e+01 9.75147e-01 1534 2010 8 3.01763e+01 1.09849e+00 1561 2010 9 2.95684e+01 8.75676e-01 1980 2010 10 2.77743e+01 1.04486e+00 2677 2010 11 2.63340e+01 1.09232e+00 2290 2010 12 2.39790e+01 1.40234e+00 3212 2011 1 2.22800e+01 8.62040e-01 2176 2011 2 2.19243e+01 1.11135e+00 2685 2011 3 2.39917e+01 8.48484e-01 3221 2011 4 2.60146e+01 7.07440e-01 3398 2011 5 2.71836e+01 8.43691e-01 2965 2011 6 2.82407e+01 1.09694e+00 2056 2011 7 2.94735e+01 1.21839e+00 1934 2011 8 3.00367e+01 1.04459e+00 1794 2011 9 2.98501e+01 1.01103e+00 2098 2011 10 2.87279e+01 1.14890e+00 1121 2011 11 2.58720e+01 5.60276e-01 2680 2011 12 2.45397e+01 1.04845e+00 2054 2012 1 2.36478e+01 5.63663e-01 2096 2012 2 2.42714e+01 4.72561e-01 1866 2012 3 2.48874e+01 5.80631e-01 2855 2012 4 2.58277e+01 1.01090e+00 2193 2012 5 2.67773e+01 1.27518e+00 1666 2012 6 2.84564e+01 7.95166e-01 1372 2012 7 2.86826e+01 9.34629e-01 2231 2012 8 2.93584e+01 9.72909e-01 2251 2012 9 2.91965e+01 9.12214e-01 2055 2012 10 2.84270e+01 7.39466e-01 2105 2012 11 2.70909e+01 7.44096e-01 2630 2012 12 2.54327e+01 9.00707e-01 2196 2013 1 2.42747e+01 6.67491e-01 1906 2013 2 2.43867e+01 7.81090e-01 2134 2013 3 2.36740e+01 6.90504e-01 2543 2013 4 2.57299e+01 1.36774e+00 2432 2013 5 2.64979e+01 8.10574e-01 2703 2013 6 2.77897e+01 1.05663e+00 1774 2013 7 2.90686e+01 1.06131e+00 1808 2013 8 2.91462e+01 1.15039e+00 1188 2013 9 2.89493e+01 1.04947e+00 1508 2013 10 2.86686e+01 8.92038e-01 2491 2013 11 2.72318e+01 6.81494e-01 1643 2013 12 2.55470e+01 1.18025e+00 2285 2014 1 2.45916e+01 1.15114e+00 1753 2014 2 2.48612e+01 9.14809e-01 2898 2014 3 2.45284e+01 7.56901e-01 2554 2014 4 2.54738e+01 8.20934e-01 2710 2014 5 2.64664e+01 6.91769e-01 1876 2014 6 2.87714e+01 1.00206e+00 2052 2014 7 2.99231e+01 1.07549e+00 2301 2014 8 3.06844e+01 8.63095e-01 2601 2014 9 2.98972e+01 1.15147e+00 1133 2014 10 2.86838e+01 1.15882e+00 2257 2014 11 2.62236e+01 8.12313e-01 2338 2014 12 2.55714e+01 6.20559e-01 2374 2015 1 2.48083e+01 7.82965e-01 1631 2015 2 2.36386e+01 8.69941e-01 2256 2015 3 2.49984e+01 1.25132e+00 2931 2015 4 2.63209e+01 1.24135e+00 2631 2015 5 2.70422e+01 1.00278e+00 3054 2015 6 2.88660e+01 9.98143e-01 2040 2015 7 2.97963e+01 1.19261e+00 2095 2015 8 3.05226e+01 7.89744e-01 2200 2015 9 3.04917e+01 1.18725e+00 1541 2015 10 2.85784e+01 1.04591e+00 1710 2015 11 2.76861e+01 7.70477e-01 2431 2015 12 2.62089e+01 4.77597e-01 1631 2016 1 2.56585e+01 9.15959e-01 726 2016 2 2.42636e+01 5.62298e-01 1536 2016 3 2.51377e+01 1.27533e+00 1694 2016 4 2.58322e+01 9.51758e-01 2855 2016 5 2.76025e+01 1.27496e+00 2981 2016 6 2.88838e+01 8.00307e-01 2012 2016 7 2.95613e+01 7.89502e-01 2319 2016 8 2.97814e+01 1.09899e+00 1468 2016 9 2.96113e+01 9.37063e-01 2286 2016 10 2.89956e+01 6.86930e-01 1656 2016 11 2.70190e+01 1.09236e+00 2856 2016 12 2.61119e+01 7.06318e-01 2253 2017 1 2.48510e+01 9.11971e-01 2217 2017 2 2.40059e+01 8.63226e-01 2803 2017 3 2.47726e+01 1.06204e+00 2644 2017 4 2.55851e+01 9.23492e-01 1649 2017 5 2.71005e+01 1.26617e+00 2399 2017 6 2.84961e+01 1.18041e+00 1664 2017 7 2.94802e+01 8.43931e-01 2366 2017 8 3.04142e+01 8.88329e-01 2456 2017 9 2.98947e+01 9.11970e-01 1904 2017 10 2.86415e+01 8.41443e-01 1615 2017 11 2.66136e+01 6.75392e-01 2895 2017 12 2.55973e+01 9.49117e-01 3404 2018 1 2.39854e+01 1.07213e+00 1331 2018 2 2.44560e+01 7.76429e-01 2994 2018 3 2.49472e+01 8.06930e-01 3179 2018 4 2.57229e+01 1.01407e+00 2735 2018 5 2.55831e+01 7.38929e-01 1026 2018 6 2.88856e+01 1.12222e+00 1667 2018 7 3.01011e+01 1.25900e+00 1827 2018 8 2.98403e+01 9.43676e-01 2507 2018 9 2.96555e+01 9.94230e-01 2494 2018 10 2.82553e+01 6.95538e-01 2941 2018 11 2.68829e+01 8.83155e-01 2020 2018 12 2.56430e+01 1.55238e+00 2116 2019 1 2.42992e+01 8.16648e-01 1983 2019 2 2.52878e+01 1.02807e+00 2619 2019 3 2.58450e+01 8.31372e-01 2810 2019 4 2.61040e+01 7.22824e-01 2937 2019 5 2.76221e+01 8.16970e-01 2987 2019 6 2.96751e+01 1.35439e+00 2543 2019 7 2.97567e+01 1.01913e+00 2344 2019 8 3.04583e+01 1.07342e+00 2110 2019 9 2.93323e+01 1.02930e+00 2120 2019 10 2.83982e+01 9.07483e-01 2033 2019 11 2.76142e+01 9.71468e-01 2544 2019 12 2.55739e+01 7.60740e-01 1847 2020 1 2.49818e+01 9.66591e-01 2433 2020 2 2.49580e+01 1.11027e+00 1974 2020 3 2.50039e+01 6.04331e-01 3357 2020 4 2.69936e+01 1.08390e+00 2645 2020 5 2.72318e+01 1.10583e+00 1627 2020 6 2.91137e+01 8.77262e-01 1417 2020 7 2.98746e+01 1.24940e+00 2229 2020 8 3.00772e+01 1.10847e+00 2472 2020 9 3.01214e+01 8.04242e-01 1649 2020 10 2.86853e+01 1.41272e+00 1340 2020 11 2.72063e+01 6.86792e-01 1670 2020 12 2.53652e+01 1.17088e+00 2257 2021 1 2.36420e+01 7.85485e-01 2486 2021 2 2.41309e+01 1.11963e+00 2567 2021 3 2.47436e+01 5.66785e-01 3125 2021 4 2.57477e+01 6.22504e-01 2482 2021 5 2.73164e+01 1.17927e+00 2942 2021 6 2.80312e+01 1.00721e+00 1445 2021 7 2.93819e+01 1.12475e+00 2589 2021 8 2.99631e+01 1.02232e+00 1908 2021 9 2.98688e+01 1.14305e+00 2928 2021 10 2.90530e+01 8.08231e-01 2169 2021 11 2.66373e+01 7.55674e-01 1927 2021 12 2.60506e+01 7.58537e-01 2738 2022 1 2.49747e+01 7.31323e-01 1814 2022 2 2.43865e+01 8.23048e-01 2483 2022 3 2.55394e+01 6.61246e-01 3063 2022 4 2.57326e+01 6.62994e-01 1682 2022 5 2.74010e+01 1.06021e+00 2427 2022 6 2.88709e+01 1.14154e+00 2032 2022 7 2.96864e+01 6.94448e-01 2194 2022 8 3.00188e+01 9.85041e-01 2313 2022 9 3.07138e+01 9.58681e-01 2318 2022 10 2.82846e+01 7.64986e-01 2281 2022 11 2.73413e+01 6.28102e-01 2527 2022 12 2.60143e+01 8.01711e-01 2594 2023 1 2.51860e+01 7.39798e-01 3306 2023 2 2.51571e+01 7.89417e-01 3280 2023 3 2.54305e+01 7.27337e-01 3173 2023 4 2.65600e+01 8.14921e-01 2406 2023 5 2.78309e+01 1.37915e+00 2594 2023 6 2.92230e+01 1.07894e+00 2064 2023 7 3.08169e+01 7.87336e-01 2377 2023 8 3.10627e+01 9.28066e-01 2206 2023 9 3.07308e+01 8.29739e-01 2066 2023 10 2.91823e+01 1.07927e+00 2831 2023 11 2.74423e+01 7.87469e-01 2544 2023 12 2.61030e+01 9.52456e-01 1325 2024 1 2.49626e+01 7.69522e-01 1645 2024 2 2.35368e+01 6.75319e-01 2772 2024 3 2.49925e+01 7.58842e-01 2001 2024 4 2.43039e+01 1.66857e-01 130