YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.99190e+01 6.07858e-01 155 2000 3 2.14994e+01 9.29331e-01 647 2000 4 2.28204e+01 6.26007e-01 640 2000 5 2.46718e+01 1.55400e+00 704 2000 6 2.76818e+01 1.56875e+00 387 2000 7 2.90325e+01 7.17314e-01 603 2000 8 2.91346e+01 1.76727e+00 428 2000 9 2.93219e+01 8.22587e-01 617 2000 10 2.71281e+01 1.35099e+00 967 2000 11 2.46402e+01 1.11738e+00 700 2000 12 2.21746e+01 8.70377e-01 746 2001 1 1.84857e+01 7.93322e-01 483 2001 2 1.89965e+01 1.22272e+00 398 2001 3 1.98146e+01 4.10875e-01 652 2001 4 2.16687e+01 2.00686e+00 629 2001 5 2.40575e+01 1.31588e+00 600 2001 6 2.77292e+01 1.87880e+00 441 2001 7 2.86639e+01 4.84257e-01 392 2001 8 2.92869e+01 7.93774e-01 519 2001 9 2.85183e+01 5.76163e-01 461 2001 10 2.67561e+01 8.31814e-01 493 2001 11 2.34745e+01 5.40845e-01 896 2001 12 2.34150e+01 5.86535e-01 697 2002 1 2.09345e+01 7.97478e-01 560 2002 2 1.94263e+01 1.41683e+00 579 2002 3 1.95112e+01 1.14466e+00 278 2002 4 2.35751e+01 1.42567e+00 709 2002 5 2.61710e+01 4.72705e-01 943 2002 6 2.66242e+01 1.87573e+00 557 2002 7 2.82827e+01 1.36708e+00 1594 2002 8 2.95367e+01 9.68176e-01 1862 2002 9 2.91276e+01 1.23553e+00 1878 2002 10 2.86498e+01 1.03155e+00 3902 2002 11 2.61048e+01 1.92362e+00 2355 2002 12 2.17115e+01 1.18318e+00 1733 2003 1 1.85875e+01 1.27240e+00 2288 2003 2 1.71577e+01 9.13254e-01 1320 2003 3 2.16014e+01 1.71811e+00 1442 2003 4 2.17440e+01 1.23107e+00 2409 2003 5 2.67358e+01 1.31329e+00 3569 2003 6 2.79429e+01 1.10283e+00 1815 2003 7 2.92194e+01 1.39581e+00 1828 2003 8 2.96244e+01 6.00073e-01 1699 2003 9 2.90465e+01 9.61209e-01 2190 2003 10 2.69647e+01 1.33582e+00 2601 2003 11 2.42546e+01 8.29621e-01 3350 2003 12 2.03937e+01 1.59383e+00 2312 2004 1 1.87905e+01 9.60142e-01 2695 2004 2 1.84460e+01 1.06580e+00 1369 2004 3 2.01411e+01 9.44200e-01 2592 2004 4 2.15361e+01 1.12515e+00 2787 2004 5 2.51310e+01 1.30662e+00 3803 2004 6 2.89394e+01 9.46662e-01 3396 2004 7 2.98731e+01 1.11222e+00 2213 2004 8 2.96986e+01 1.67083e+00 2269 2004 9 2.84325e+01 1.42059e+00 2203 2004 10 2.71105e+01 9.68839e-01 3405 2004 11 2.51472e+01 1.07474e+00 2894 2004 12 2.17931e+01 1.80424e+00 2242 2005 1 1.91893e+01 9.79613e-01 2714 2005 2 1.85332e+01 7.47068e-01 2333 2005 3 1.91723e+01 1.29588e+00 1659 2005 4 2.13695e+01 7.59163e-01 3094 2005 5 2.48780e+01 1.77615e+00 2983 2005 6 2.73097e+01 1.31583e+00 1692 2005 7 2.90732e+01 1.30466e+00 2967 2005 8 3.06413e+01 1.50314e+00 2838 2005 9 2.83812e+01 1.48209e+00 2457 2005 10 2.72365e+01 8.46503e-01 2092 2005 11 2.40419e+01 9.65728e-01 2691 2005 12 2.16301e+01 1.42948e+00 2126 2006 1 1.98614e+01 8.78510e-01 2129 2006 2 1.87948e+01 9.31093e-01 2292 2006 3 2.01564e+01 1.05249e+00 2560 2006 4 2.34196e+01 1.83943e+00 3391 2006 5 2.56111e+01 1.38861e+00 3001 2006 6 2.78754e+01 1.34124e+00 2849 2006 7 2.88644e+01 1.60566e+00 2399 2006 8 2.98005e+01 1.03826e+00 2322 2006 9 2.97570e+01 9.25191e-01 2998 2006 10 2.81297e+01 1.07447e+00 3600 2006 11 2.40430e+01 1.52694e+00 2178 2006 12 2.09306e+01 9.00067e-01 1557 2007 1 2.11663e+01 1.10553e+00 1709 2007 2 1.92190e+01 9.91701e-01 1712 2007 3 2.03651e+01 1.00643e+00 2551 2007 4 2.17267e+01 1.55759e+00 2765 2007 5 2.43902e+01 1.14324e+00 3840 2007 6 2.69992e+01 1.50592e+00 2615 2007 7 2.97788e+01 1.52806e+00 2245 2007 8 3.01224e+01 1.11059e+00 2942 2007 9 3.00503e+01 1.45196e+00 2376 2007 10 2.86328e+01 7.34077e-01 2250 2007 11 2.49565e+01 1.35161e+00 3483 2007 12 2.31403e+01 8.52114e-01 3217 2008 1 2.03807e+01 1.26896e+00 2528 2008 2 2.03123e+01 8.72734e-01 1717 2008 3 2.05225e+01 1.07580e+00 2131 2008 4 2.29335e+01 7.75596e-01 3692 2008 5 2.54260e+01 1.54701e+00 3797 2008 6 2.85498e+01 1.20727e+00 2813 2008 7 2.91755e+01 1.17254e+00 2026 2008 8 2.97591e+01 8.54164e-01 2271 2008 9 2.89525e+01 8.57075e-01 2077 2008 10 2.71329e+01 1.17309e+00 2643 2008 11 2.34034e+01 1.06906e+00 3164 2008 12 2.12284e+01 7.42001e-01 2485 2009 1 1.97342e+01 1.28631e+00 2661 2009 2 1.79170e+01 1.06762e+00 2633 2009 3 1.94861e+01 1.51034e+00 2571 2009 4 2.25448e+01 9.86036e-01 2783 2009 5 2.58247e+01 1.57498e+00 2493 2009 6 2.79952e+01 1.24899e+00 2612 2009 7 2.93052e+01 1.25384e+00 2844 2009 8 2.97651e+01 1.17031e+00 2489 2009 9 2.97098e+01 1.12171e+00 2253 2009 10 2.88941e+01 1.60142e+00 3503 2009 11 2.47687e+01 1.42964e+00 1823 2009 12 2.17097e+01 9.85676e-01 1166 2010 1 1.78150e+01 1.70406e+00 1471 2010 2 1.63850e+01 1.05814e+00 1012 2010 3 1.65555e+01 1.01492e+00 2097 2010 4 2.02868e+01 1.76692e+00 2000 2010 5 2.61949e+01 1.72874e+00 3172 2010 6 2.95208e+01 1.10802e+00 3603 2010 7 2.90446e+01 9.19429e-01 2418 2010 8 3.00759e+01 1.11360e+00 2385 2010 9 2.93915e+01 1.14867e+00 2888 2010 10 2.67874e+01 1.10344e+00 3819 2010 11 2.42889e+01 1.09522e+00 3382 2010 12 2.00876e+01 2.03118e+00 2591 2011 1 1.69471e+01 6.54068e-01 1890 2011 2 1.75756e+01 9.36565e-01 1875 2011 3 1.97110e+01 1.56424e+00 2943 2011 4 2.41679e+01 1.36955e+00 3390 2011 5 2.65107e+01 1.30181e+00 4040 2011 6 2.84704e+01 1.40416e+00 3075 2011 7 2.95914e+01 1.29990e+00 1961 2011 8 3.02655e+01 1.00744e+00 2418 2011 9 2.94985e+01 7.47444e-01 2593 2011 10 2.78899e+01 1.34054e+00 2253 2011 11 2.37552e+01 8.20403e-01 3267 2011 12 2.12436e+01 1.00016e+00 2885 2012 1 1.94899e+01 8.38905e-01 2523 2012 2 1.98981e+01 1.23191e+00 1601 2012 3 2.22359e+01 9.56615e-01 3799 2012 4 2.39824e+01 9.60473e-01 3180 2012 5 2.63510e+01 9.66256e-01 2700 2012 6 2.76373e+01 1.17908e+00 1918 2012 7 2.88636e+01 1.52014e+00 2606 2012 8 2.95207e+01 1.50114e+00 2025 2012 9 2.80913e+01 1.16652e+00 2073 2012 10 2.71137e+01 1.11179e+00 2510 2012 11 2.30272e+01 1.18828e+00 2822 2012 12 2.13309e+01 9.27839e-01 2381 2013 1 2.02388e+01 9.45313e-01 2171 2013 2 2.03436e+01 6.40147e-01 2628 2013 3 1.94404e+01 1.00870e+00 2393 2013 4 2.19496e+01 1.82539e+00 2075 2013 5 2.49084e+01 1.15761e+00 3154 2013 6 2.79672e+01 1.47079e+00 2609 2013 7 2.90135e+01 1.15051e+00 1884 2013 8 2.98493e+01 1.09914e+00 2273 2013 9 2.95893e+01 1.12818e+00 2583 2013 10 2.78554e+01 9.94732e-01 2892 2013 11 2.37320e+01 1.66821e+00 1639 2013 12 2.23282e+01 1.06855e+00 2319 2014 1 1.98132e+01 1.23531e+00 1755 2014 2 1.97219e+01 9.62424e-01 1617 2014 3 2.11053e+01 8.31246e-01 2003 2014 4 2.28789e+01 1.92798e+00 2155 2014 5 2.51054e+01 1.26845e+00 2220 2014 6 2.81899e+01 1.44914e+00 2716 2014 7 2.99305e+01 1.39383e+00 2348 2014 8 3.04924e+01 1.23998e+00 2781 2014 9 2.99416e+01 1.19165e+00 1497 2014 10 2.84567e+01 1.04441e+00 2917 2014 11 2.44479e+01 1.43541e+00 2320 2014 12 2.11398e+01 8.11404e-01 2304 2015 1 2.02373e+01 1.07682e+00 1754 2015 2 1.89482e+01 9.06351e-01 2433 2015 3 2.17928e+01 1.51880e+00 2785 2015 4 2.46496e+01 1.72523e+00 2226 2015 5 2.72931e+01 1.41793e+00 3579 2015 6 2.90494e+01 1.43489e+00 2416 2015 7 3.01849e+01 8.18624e-01 1811 2015 8 3.03047e+01 8.70196e-01 2156 2015 9 3.01355e+01 1.26429e+00 1079 2015 10 2.78751e+01 1.18835e+00 2227 2015 11 2.62972e+01 9.20409e-01 2904 2015 12 2.36565e+01 7.51103e-01 1706 2016 1 2.21426e+01 1.75820e+00 1046 2016 2 1.91882e+01 1.10380e+00 1973 2016 3 2.01708e+01 1.37941e+00 1603 2016 4 2.27711e+01 1.66615e+00 2848 2016 5 2.57833e+01 1.61782e+00 3256 2016 6 2.83181e+01 1.19218e+00 2791 2016 7 3.02061e+01 1.04035e+00 2540 2016 8 3.01349e+01 1.03210e+00 2216 2016 9 2.95441e+01 1.16927e+00 2490 2016 10 2.73936e+01 1.28495e+00 2800 2016 11 2.45265e+01 1.24862e+00 3239 2016 12 2.24099e+01 7.20992e-01 2837 2017 1 2.04783e+01 7.97199e-01 2820 2017 2 2.01099e+01 9.71358e-01 2704 2017 3 2.10686e+01 1.08402e+00 3446 2017 4 2.28836e+01 7.97535e-01 2779 2017 5 2.59578e+01 1.27508e+00 3042 2017 6 2.84003e+01 1.44015e+00 1628 2017 7 3.02261e+01 9.59159e-01 2244 2017 8 3.06846e+01 1.11623e+00 2119 2017 9 2.93788e+01 9.67581e-01 2772 2017 10 2.77335e+01 1.28856e+00 2513 2017 11 2.45000e+01 8.93366e-01 3497 2017 12 2.27624e+01 1.31485e+00 2803 2018 1 1.88503e+01 1.68681e+00 1794 2018 2 2.06859e+01 1.61837e+00 2754 2018 3 2.14422e+01 1.12669e+00 3487 2018 4 2.30014e+01 1.05498e+00 3005 2018 5 2.39994e+01 1.23954e+00 1689 2018 6 2.82592e+01 1.63890e+00 2443 2018 7 3.02207e+01 9.89049e-01 1903 2018 8 3.00861e+01 6.47902e-01 2716 2018 9 2.96136e+01 1.30669e+00 2434 2018 10 2.80408e+01 1.09314e+00 3194 2018 11 2.54311e+01 9.16779e-01 2138 2018 12 2.16745e+01 1.88475e+00 2139 2019 1 2.01184e+01 1.01921e+00 1961 2019 2 2.01872e+01 1.14368e+00 1553 2019 3 2.18371e+01 5.50762e-01 2700 2019 4 2.33857e+01 1.18087e+00 2674 2019 5 2.66921e+01 1.19882e+00 3318 2019 6 2.95032e+01 1.36347e+00 2366 2019 7 3.03559e+01 1.07787e+00 2630 2019 8 3.01800e+01 6.98580e-01 1693 2019 9 2.96971e+01 8.89129e-01 3328 2019 10 2.83273e+01 7.33433e-01 2859 2019 11 2.60661e+01 1.65563e+00 1983 2019 12 2.32379e+01 1.33208e+00 1819 2020 1 2.14632e+01 9.93088e-01 2873 2020 2 2.05450e+01 7.60746e-01 2319 2020 3 2.23726e+01 1.87924e+00 3522 2020 4 2.49306e+01 9.37871e-01 2522 2020 5 2.57147e+01 9.86067e-01 2811 2020 6 2.90293e+01 1.42255e+00 2215 2020 7 3.01209e+01 1.04786e+00 2107 2020 8 3.09462e+01 1.16179e+00 1460 2020 9 3.00775e+01 1.19937e+00 1519 2020 10 2.82676e+01 8.16568e-01 1762 2020 11 2.56389e+01 1.09111e+00 2512 2020 12 2.20815e+01 1.39839e+00 2561 2021 1 1.93769e+01 8.58424e-01 2010 2021 2 2.00802e+01 8.22995e-01 2611 2021 3 2.12003e+01 1.07885e+00 2956 2021 4 2.24839e+01 1.58342e+00 3099 2021 5 2.62153e+01 1.07262e+00 3285 2021 6 2.75817e+01 9.34032e-01 1628 2021 7 2.94788e+01 9.57412e-01 2156 2021 8 3.04241e+01 8.23660e-01 1926 2021 9 2.99659e+01 7.93776e-01 2489 2021 10 2.91898e+01 7.89957e-01 2407 2021 11 2.49290e+01 1.21746e+00 2680 2021 12 2.31110e+01 4.01790e-01 3507 2022 1 2.22475e+01 1.22502e+00 2328 2022 2 1.94786e+01 1.19185e+00 2584 2022 3 2.12334e+01 1.04845e+00 3352 2022 4 2.40763e+01 9.19673e-01 1900 2022 5 2.65957e+01 1.29800e+00 3112 2022 6 2.89475e+01 1.28679e+00 2711 2022 7 3.03857e+01 1.41157e+00 2600 2022 8 3.08201e+01 8.64201e-01 2009 2022 9 3.03642e+01 1.09528e+00 1756 2022 10 2.77292e+01 1.02089e+00 2915 2022 11 2.60880e+01 9.72237e-01 1980 2022 12 2.34917e+01 1.17785e+00 2559 2023 1 2.09220e+01 1.06520e+00 3079 2023 2 2.12050e+01 1.30245e+00 2964 2023 3 2.32902e+01 8.37046e-01 4098 2023 4 2.49104e+01 1.05918e+00 2952 2023 5 2.68832e+01 1.31808e+00 3865 2023 6 2.81900e+01 1.24957e+00 2456 2023 7 3.10737e+01 1.06829e+00 2554 2023 8 3.17179e+01 1.15909e+00 2511 2023 9 3.06073e+01 1.22047e+00 2559 2023 10 2.81387e+01 1.45300e+00 2794 2023 11 2.54423e+01 8.38400e-01 1699 2023 12 2.21818e+01 1.50756e+00 1003 2024 1 2.02660e+01 8.64623e-01 1107 2024 2 1.99718e+01 4.40632e-01 2325 2024 3 2.18836e+01 7.06234e-01 1514 2024 4 2.25921e+01 5.78479e-01 197