YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.58273e+01 2.97584e-01 256 2000 3 2.52260e+01 1.38594e+00 523 2000 4 2.52303e+01 6.93826e-01 489 2000 5 2.63576e+01 6.04561e-01 438 2000 6 2.61971e+01 1.19975e+00 171 2000 7 2.72814e+01 1.25732e+00 261 2000 8 2.83442e+01 7.20292e-01 331 2000 9 2.85119e+01 6.78885e-01 534 2000 10 2.91320e+01 5.52468e-01 766 2000 11 2.82332e+01 5.75514e-01 736 2000 12 2.72998e+01 5.67372e-01 597 2001 1 2.64800e+01 5.45400e-01 654 2001 2 2.60807e+01 5.02761e-01 459 2001 3 2.54966e+01 3.84411e-01 531 2001 4 2.60722e+01 3.98830e-01 432 2001 5 2.64009e+01 6.23262e-01 317 2001 6 2.76126e+01 3.13747e-01 86 2001 7 2.76359e+01 7.78215e-01 502 2001 8 2.81275e+01 7.09739e-01 520 2001 9 2.86585e+01 5.00583e-01 660 2001 10 2.84172e+01 7.70222e-01 537 2001 11 2.81665e+01 7.14156e-01 380 2001 12 2.65113e+01 6.91896e-01 333 2002 1 2.61868e+01 6.58842e-01 766 2002 2 2.59694e+01 6.50871e-01 366 2002 3 2.59126e+01 6.61445e-01 548 2002 4 2.59989e+01 3.34616e-01 232 2002 5 2.67266e+01 9.65030e-01 560 2002 6 2.65764e+01 9.60221e-01 240 2002 7 2.71998e+01 6.70136e-01 2133 2002 8 2.80910e+01 7.06978e-01 1516 2002 9 2.86016e+01 5.95977e-01 1784 2002 10 2.89230e+01 5.46466e-01 2255 2002 11 2.84976e+01 6.44383e-01 2950 2002 12 2.73874e+01 5.65069e-01 2477 2003 1 2.68136e+01 5.31653e-01 2721 2003 2 2.64013e+01 5.15734e-01 2207 2003 3 2.64479e+01 7.59392e-01 2499 2003 4 2.67946e+01 8.70461e-01 1493 2003 5 2.67515e+01 6.56998e-01 1883 2003 6 2.65095e+01 1.14856e+00 911 2003 7 2.68471e+01 1.01776e+00 1205 2003 8 2.76312e+01 8.27848e-01 1681 2003 9 2.85487e+01 1.00240e+00 1772 2003 10 2.91931e+01 6.38835e-01 1959 2003 11 2.80061e+01 7.86662e-01 1429 2003 12 2.70048e+01 7.12029e-01 2160 2004 1 2.61380e+01 9.27678e-01 2458 2004 2 2.59716e+01 6.41779e-01 2453 2004 3 2.54987e+01 8.06638e-01 2593 2004 4 2.64534e+01 7.26463e-01 2987 2004 5 2.62292e+01 1.07422e+00 1121 2004 6 2.70207e+01 6.57212e-01 1347 2004 7 2.73484e+01 9.74964e-01 1543 2004 8 2.77307e+01 8.06732e-01 1569 2004 9 2.81467e+01 1.14668e+00 1347 2004 10 2.86080e+01 6.71198e-01 2098 2004 11 2.74646e+01 7.98537e-01 1558 2004 12 2.63607e+01 6.13163e-01 2884 2005 1 2.54324e+01 8.52031e-01 1635 2005 2 2.50667e+01 7.74711e-01 1940 2005 3 2.60200e+01 5.83861e-01 3248 2005 4 2.68720e+01 8.08824e-01 1619 2005 5 2.72724e+01 1.18829e+00 954 2005 6 2.80526e+01 1.06357e+00 1519 2005 7 2.81501e+01 7.66622e-01 1448 2005 8 2.89042e+01 6.13176e-01 1405 2005 9 2.93436e+01 9.15498e-01 2025 2005 10 2.88684e+01 1.04264e+00 1426 2005 11 2.77519e+01 9.69190e-01 1549 2005 12 2.69588e+01 8.16196e-01 2054 2006 1 2.61534e+01 7.48392e-01 1897 2006 2 2.58843e+01 4.60055e-01 2392 2006 3 2.60509e+01 7.49269e-01 2381 2006 4 2.66096e+01 8.78647e-01 2152 2006 5 2.70448e+01 8.24894e-01 2056 2006 6 2.75443e+01 9.22989e-01 1207 2006 7 2.77743e+01 6.83929e-01 1747 2006 8 2.76450e+01 8.97457e-01 1277 2006 9 2.90299e+01 8.13670e-01 2443 2006 10 2.91617e+01 7.81472e-01 1652 2006 11 2.86907e+01 6.10754e-01 2466 2006 12 2.72469e+01 7.81079e-01 2249 2007 1 2.64794e+01 5.27356e-01 2737 2007 2 2.62763e+01 5.51696e-01 2899 2007 3 2.61016e+01 5.31624e-01 2414 2007 4 2.63476e+01 6.04963e-01 1734 2007 5 2.75428e+01 8.13104e-01 1859 2007 6 2.75891e+01 9.42405e-01 1448 2007 7 2.73042e+01 6.92649e-01 1318 2007 8 2.80230e+01 9.63225e-01 1713 2007 9 2.85686e+01 6.01578e-01 1993 2007 10 2.88649e+01 8.27392e-01 1768 2007 11 2.80591e+01 6.15675e-01 1407 2007 12 2.66706e+01 6.41938e-01 2206 2008 1 2.63854e+01 6.08902e-01 2376 2008 2 2.54545e+01 5.83569e-01 2361 2008 3 2.55549e+01 7.10438e-01 2752 2008 4 2.58466e+01 6.16307e-01 2230 2008 5 2.66166e+01 8.28270e-01 2337 2008 6 2.75006e+01 9.13532e-01 1288 2008 7 2.72960e+01 8.14582e-01 2258 2008 8 2.80767e+01 9.42228e-01 2016 2008 9 2.86032e+01 8.67707e-01 1149 2008 10 2.86754e+01 5.80877e-01 2400 2008 11 2.81654e+01 7.88106e-01 1927 2008 12 2.64940e+01 7.03978e-01 1955 2009 1 2.57792e+01 7.72376e-01 2329 2009 2 2.56496e+01 5.33628e-01 1903 2009 3 2.53819e+01 6.43332e-01 1594 2009 4 2.56324e+01 7.58921e-01 2098 2009 5 2.60808e+01 9.28073e-01 1160 2009 6 2.69641e+01 9.39584e-01 1398 2009 7 2.73267e+01 9.28091e-01 1541 2009 8 2.78046e+01 7.30441e-01 1824 2009 9 2.86542e+01 8.05023e-01 1976 2009 10 2.87478e+01 5.81924e-01 2314 2009 11 2.82840e+01 6.39813e-01 2549 2009 12 2.74366e+01 6.74553e-01 2589 2010 1 2.67956e+01 7.13317e-01 2020 2010 2 2.66682e+01 7.14864e-01 2538 2010 3 2.69378e+01 6.56917e-01 2516 2010 4 2.66581e+01 9.84220e-01 1712 2010 5 2.70568e+01 8.39120e-01 1213 2010 6 2.80863e+01 6.75705e-01 1115 2010 7 2.75662e+01 9.30129e-01 1182 2010 8 2.89471e+01 7.66786e-01 1652 2010 9 2.86738e+01 8.53077e-01 1418 2010 10 2.89904e+01 7.20746e-01 2162 2010 11 2.74133e+01 7.84119e-01 865 2010 12 2.67138e+01 9.53131e-01 1312 2011 1 2.56194e+01 5.68549e-01 2311 2011 2 2.56614e+01 6.14748e-01 1987 2011 3 2.56722e+01 5.19405e-01 2932 2011 4 2.59851e+01 7.90016e-01 2198 2011 5 2.65914e+01 7.68822e-01 889 2011 6 2.75110e+01 8.48774e-01 1224 2011 7 2.77080e+01 9.69267e-01 1449 2011 8 2.80512e+01 5.84479e-01 1452 2011 9 2.85718e+01 7.64719e-01 1681 2011 10 2.87501e+01 7.51849e-01 2362 2011 11 2.79122e+01 9.08884e-01 1609 2011 12 2.71159e+01 7.74031e-01 1832 2012 1 2.62261e+01 8.15079e-01 2222 2012 2 2.56514e+01 6.19001e-01 2436 2012 3 2.56638e+01 7.55639e-01 1893 2012 4 2.60424e+01 8.82145e-01 1863 2012 5 2.66048e+01 8.63694e-01 1284 2012 6 2.73305e+01 7.03879e-01 1861 2012 7 2.72843e+01 7.81814e-01 1340 2012 8 2.79407e+01 8.19162e-01 1328 2012 9 2.87491e+01 7.73309e-01 2348 2012 10 2.87236e+01 7.26279e-01 1394 2012 11 2.85583e+01 6.76198e-01 2213 2012 12 2.73157e+01 7.92250e-01 1522 2013 1 2.60993e+01 7.99101e-01 2160 2013 2 2.59016e+01 5.04059e-01 2449 2013 3 2.62816e+01 6.24109e-01 2162 2013 4 2.61527e+01 7.46612e-01 2569 2013 5 2.70550e+01 1.18624e+00 1606 2013 6 2.62412e+01 1.00272e+00 751 2013 7 2.74371e+01 9.31493e-01 1839 2013 8 2.80576e+01 8.00972e-01 1883 2013 9 2.91665e+01 8.05699e-01 1525 2013 10 2.90547e+01 6.78215e-01 1724 2013 11 2.82262e+01 6.72825e-01 2009 2013 12 2.67510e+01 8.44700e-01 2097 2014 1 2.62221e+01 5.11105e-01 2368 2014 2 2.61299e+01 5.21954e-01 2656 2014 3 2.63008e+01 6.94752e-01 3259 2014 4 2.64641e+01 6.94262e-01 2797 2014 5 2.66808e+01 8.34931e-01 1798 2014 6 2.72181e+01 1.11307e+00 1220 2014 7 2.70530e+01 7.10751e-01 1614 2014 8 2.74380e+01 8.64354e-01 1409 2014 9 2.87537e+01 1.00455e+00 1378 2014 10 2.90087e+01 8.82149e-01 2624 2014 11 2.85543e+01 7.43008e-01 1944 2014 12 2.72932e+01 6.72913e-01 2266 2015 1 2.68846e+01 3.88564e-01 2210 2015 2 2.65728e+01 5.96822e-01 2594 2015 3 2.61383e+01 6.79244e-01 2966 2015 4 2.64029e+01 6.89859e-01 2812 2015 5 2.65981e+01 7.75428e-01 2075 2015 6 2.69853e+01 8.67127e-01 1156 2015 7 2.73551e+01 6.52368e-01 1193 2015 8 2.79862e+01 8.20719e-01 2325 2015 9 2.89697e+01 7.90662e-01 2344 2015 10 2.94205e+01 7.07261e-01 2187 2015 11 2.84229e+01 7.46810e-01 1244 2015 12 2.75657e+01 9.97089e-01 1741 2016 1 2.67127e+01 6.62765e-01 2262 2016 2 2.65661e+01 6.10588e-01 2742 2016 3 2.64754e+01 5.51028e-01 2095 2016 4 2.68616e+01 8.31121e-01 1732 2016 5 2.69201e+01 9.28730e-01 1356 2016 6 2.74602e+01 6.60074e-01 1478 2016 7 2.76221e+01 6.95370e-01 1759 2016 8 2.80311e+01 9.04864e-01 2173 2016 9 2.89031e+01 1.01943e+00 1997 2016 10 2.88736e+01 9.92925e-01 1645 2016 11 2.83745e+01 9.30011e-01 637 2016 12 2.73768e+01 6.87270e-01 2205 2017 1 2.65204e+01 6.24457e-01 2212 2017 2 2.63142e+01 6.87557e-01 2380 2017 3 2.61146e+01 6.30520e-01 1950 2017 4 2.66504e+01 7.52831e-01 2028 2017 5 2.67856e+01 9.35989e-01 1765 2017 6 2.72927e+01 7.10206e-01 2012 2017 7 2.80783e+01 5.74636e-01 2063 2017 8 2.83630e+01 8.25505e-01 1949 2017 9 2.83951e+01 1.20987e+00 906 2017 10 2.81790e+01 9.28393e-01 1585 2017 11 2.82712e+01 6.31332e-01 1664 2017 12 2.73621e+01 7.07460e-01 2062 2018 1 2.65836e+01 7.66051e-01 1521 2018 2 2.56317e+01 6.97465e-01 1651 2018 3 2.60908e+01 4.87811e-01 2936 2018 4 2.61654e+01 7.05545e-01 2724 2018 5 2.65187e+01 7.03557e-01 1695 2018 6 2.71045e+01 6.48795e-01 1470 2018 7 2.70592e+01 5.47483e-01 744 2018 8 2.81608e+01 6.20633e-01 2266 2018 9 2.84014e+01 8.88166e-01 1799 2018 10 2.87725e+01 6.80342e-01 1796 2018 11 2.80514e+01 7.04249e-01 2416 2018 12 2.72389e+01 6.77420e-01 2479 2019 1 2.64869e+01 6.05497e-01 2388 2019 2 2.60415e+01 6.09497e-01 2310 2019 3 2.61236e+01 6.58633e-01 3233 2019 4 2.65028e+01 7.78238e-01 2743 2019 5 2.70377e+01 8.21146e-01 1382 2019 6 2.70653e+01 6.17104e-01 2300 2019 7 2.78947e+01 7.78012e-01 2086 2019 8 2.81573e+01 6.20685e-01 2113 2019 9 2.87957e+01 8.40395e-01 1930 2019 10 2.93089e+01 7.01351e-01 2658 2019 11 2.88114e+01 6.40052e-01 2659 2019 12 2.80562e+01 7.49949e-01 2485 2020 1 2.67425e+01 6.55821e-01 1753 2020 2 2.64761e+01 7.72554e-01 2531 2020 3 2.63195e+01 6.46758e-01 2381 2020 4 2.67414e+01 6.46261e-01 2781 2020 5 2.76132e+01 8.32888e-01 1915 2020 6 2.79631e+01 9.01106e-01 2147 2020 7 2.83144e+01 8.79240e-01 1780 2020 8 2.86709e+01 5.33451e-01 1840 2020 9 2.93207e+01 1.13235e+00 2313 2020 10 2.90716e+01 7.04985e-01 2119 2020 11 2.83469e+01 8.50583e-01 1400 2020 12 2.74475e+01 6.49435e-01 2256 2021 1 2.66916e+01 5.97909e-01 2329 2021 2 2.63226e+01 5.61695e-01 2687 2021 3 2.59014e+01 6.83365e-01 2759 2021 4 2.64846e+01 5.27824e-01 2352 2021 5 2.66799e+01 6.53170e-01 2326 2021 6 2.71605e+01 1.07760e+00 1132 2021 7 2.74348e+01 7.55136e-01 1612 2021 8 2.78136e+01 4.67923e-01 1798 2021 9 2.89909e+01 8.57427e-01 2555 2021 10 2.94091e+01 8.56186e-01 2486 2021 11 2.86781e+01 5.85927e-01 2233 2021 12 2.71852e+01 9.10192e-01 2011 2022 1 2.68333e+01 6.67550e-01 2850 2022 2 2.64161e+01 5.50415e-01 2087 2022 3 2.61640e+01 6.74525e-01 2287 2022 4 2.63624e+01 8.15672e-01 1133 2022 5 2.67633e+01 7.25198e-01 2376 2022 6 2.77526e+01 7.60933e-01 1990 2022 7 2.75359e+01 6.95134e-01 1444 2022 8 2.84613e+01 7.25235e-01 2150 2022 9 2.85001e+01 8.27911e-01 1665 2022 10 2.88263e+01 7.09776e-01 1782 2022 11 2.79493e+01 7.34865e-01 2371 2022 12 2.69544e+01 6.07895e-01 2695 2023 1 2.66848e+01 6.01409e-01 2508 2023 2 2.60570e+01 6.54578e-01 2090 2023 3 2.61459e+01 5.92756e-01 2937 2023 4 2.65291e+01 6.82521e-01 2504 2023 5 2.78762e+01 5.42272e-01 2261 2023 6 2.81950e+01 7.39675e-01 2017 2023 7 2.82011e+01 7.82954e-01 1279 2023 8 2.93660e+01 5.76872e-01 1604 2023 9 2.95571e+01 7.42001e-01 2250 2023 10 2.97319e+01 7.77344e-01 2036 2023 11 2.86551e+01 7.25282e-01 1933 2023 12 2.77528e+01 7.34441e-01 2394 2024 1 2.69118e+01 6.50974e-01 2203 2024 2 2.67569e+01 6.49481e-01 1855 2024 3 2.68340e+01 5.95077e-01 2313 2024 4 2.64998e+01 3.96273e-01 181