YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.99543e+01 5.08214e-01 192 2000 3 2.16243e+01 5.80553e-01 816 2000 4 2.30627e+01 5.35695e-01 712 2000 5 2.56751e+01 1.76724e+00 829 2000 6 2.86265e+01 1.04546e+00 320 2000 7 2.90548e+01 8.44649e-01 572 2000 8 2.81042e+01 8.14894e-01 172 2000 9 2.96898e+01 6.06335e-01 425 2000 10 2.70193e+01 1.20564e+00 795 2000 11 2.47291e+01 1.04402e+00 667 2000 12 2.18203e+01 1.30781e+00 928 2001 1 1.85974e+01 1.09290e+00 637 2001 2 1.94910e+01 9.69405e-01 408 2001 3 1.96613e+01 9.73265e-01 576 2001 4 2.24546e+01 1.45416e+00 640 2001 5 2.37766e+01 1.51249e+00 550 2001 6 2.84415e+01 7.08129e-01 298 2001 7 2.89913e+01 3.39641e-01 362 2001 8 2.97894e+01 6.42340e-01 448 2001 9 2.90982e+01 6.97872e-01 396 2001 10 2.73202e+01 8.24920e-01 320 2001 11 2.37323e+01 5.79368e-01 888 2001 12 2.35975e+01 6.66114e-01 855 2002 1 2.09566e+01 5.46645e-01 568 2002 2 1.98872e+01 6.42735e-01 454 2002 3 1.92490e+01 1.24796e+00 289 2002 4 2.41100e+01 1.62292e+00 817 2002 5 2.64214e+01 6.36323e-01 891 2002 6 2.76553e+01 9.51162e-01 347 2002 7 2.84500e+01 1.50099e+00 1716 2002 8 2.94247e+01 1.19591e+00 1823 2002 9 2.92959e+01 9.78337e-01 1692 2002 10 2.86932e+01 8.03905e-01 3598 2002 11 2.59213e+01 2.01990e+00 2535 2002 12 2.15422e+01 1.27081e+00 1928 2003 1 1.85460e+01 1.35026e+00 1965 2003 2 1.74808e+01 6.96406e-01 1429 2003 3 2.17100e+01 1.64689e+00 1330 2003 4 2.15507e+01 1.17822e+00 2333 2003 5 2.67702e+01 1.33505e+00 3551 2003 6 2.82403e+01 1.07279e+00 1824 2003 7 2.91612e+01 1.39618e+00 1317 2003 8 2.94465e+01 1.28727e+00 1726 2003 9 2.92437e+01 9.67806e-01 1579 2003 10 2.72546e+01 1.39264e+00 2751 2003 11 2.42971e+01 8.06534e-01 2616 2003 12 2.07380e+01 1.48711e+00 2203 2004 1 1.91233e+01 7.61119e-01 2550 2004 2 1.89692e+01 1.20794e+00 1657 2004 3 2.06629e+01 9.51877e-01 2080 2004 4 2.16467e+01 9.13588e-01 2465 2004 5 2.51635e+01 1.58151e+00 3478 2004 6 2.87169e+01 1.06539e+00 3162 2004 7 2.95354e+01 1.32301e+00 2459 2004 8 3.01092e+01 1.09621e+00 2199 2004 9 2.86877e+01 1.44417e+00 2250 2004 10 2.73669e+01 9.97642e-01 3469 2004 11 2.54089e+01 7.81247e-01 3014 2004 12 2.17217e+01 1.67896e+00 1964 2005 1 1.96029e+01 7.87892e-01 2493 2005 2 1.89051e+01 6.99957e-01 2128 2005 3 1.98729e+01 1.37629e+00 1551 2005 4 2.15912e+01 6.60262e-01 2973 2005 5 2.48868e+01 1.69005e+00 2876 2005 6 2.73806e+01 1.07763e+00 1324 2005 7 2.90281e+01 1.33421e+00 2451 2005 8 3.02945e+01 1.65001e+00 2006 2005 9 2.88340e+01 8.64852e-01 2063 2005 10 2.71374e+01 1.19994e+00 2176 2005 11 2.42611e+01 7.37768e-01 2786 2005 12 2.21349e+01 1.19715e+00 2510 2006 1 2.02934e+01 9.56623e-01 2183 2006 2 1.90213e+01 8.06473e-01 2450 2006 3 2.02305e+01 9.98684e-01 3025 2006 4 2.35814e+01 1.75736e+00 3336 2006 5 2.59647e+01 1.26829e+00 2996 2006 6 2.77742e+01 1.45714e+00 3167 2006 7 2.87067e+01 1.35873e+00 2248 2006 8 2.99866e+01 1.01928e+00 2003 2006 9 2.97926e+01 9.06177e-01 2158 2006 10 2.84947e+01 1.20022e+00 3050 2006 11 2.39851e+01 1.39306e+00 1777 2006 12 2.14534e+01 6.95343e-01 1236 2007 1 2.16413e+01 1.09305e+00 2043 2007 2 1.96136e+01 9.29047e-01 1541 2007 3 2.06700e+01 9.26418e-01 2719 2007 4 2.21601e+01 1.65807e+00 3012 2007 5 2.45927e+01 1.14207e+00 3677 2007 6 2.73670e+01 1.38121e+00 2615 2007 7 3.02636e+01 1.11451e+00 2154 2007 8 3.02517e+01 9.04436e-01 2673 2007 9 3.00098e+01 1.35243e+00 2215 2007 10 2.84466e+01 8.79911e-01 1937 2007 11 2.51359e+01 1.24150e+00 3328 2007 12 2.34408e+01 8.42069e-01 3274 2008 1 2.04602e+01 9.72362e-01 2465 2008 2 2.05480e+01 9.71549e-01 1684 2008 3 2.09262e+01 9.11758e-01 1992 2008 4 2.32633e+01 8.38550e-01 3623 2008 5 2.56506e+01 1.29328e+00 3740 2008 6 2.86032e+01 1.08059e+00 2684 2008 7 2.91551e+01 1.47797e+00 1684 2008 8 2.96947e+01 1.27540e+00 2317 2008 9 2.89087e+01 1.19374e+00 2099 2008 10 2.75656e+01 1.02136e+00 2803 2008 11 2.36054e+01 1.16468e+00 3284 2008 12 2.11430e+01 5.87291e-01 2988 2009 1 1.99741e+01 1.07958e+00 2379 2009 2 1.80433e+01 7.82811e-01 2457 2009 3 1.98156e+01 1.28848e+00 2726 2009 4 2.25939e+01 1.09003e+00 2922 2009 5 2.58601e+01 1.44004e+00 2586 2009 6 2.79977e+01 1.57325e+00 2644 2009 7 2.96219e+01 1.40465e+00 2470 2009 8 3.02278e+01 9.05196e-01 2173 2009 9 2.97345e+01 1.13148e+00 1979 2009 10 2.88883e+01 1.66538e+00 3163 2009 11 2.47130e+01 1.92136e+00 1781 2009 12 2.23133e+01 1.43638e+00 1680 2010 1 1.83048e+01 1.51665e+00 1370 2010 2 1.71630e+01 9.16153e-01 1166 2010 3 1.68336e+01 1.06314e+00 2083 2010 4 2.06750e+01 1.48622e+00 2060 2010 5 2.62366e+01 1.64324e+00 3568 2010 6 2.95480e+01 1.19072e+00 3365 2010 7 2.88584e+01 9.74182e-01 1896 2010 8 2.98049e+01 1.34725e+00 1838 2010 9 2.96221e+01 1.06151e+00 2642 2010 10 2.70009e+01 1.21185e+00 3769 2010 11 2.42510e+01 1.10545e+00 3179 2010 12 2.03342e+01 1.88656e+00 2384 2011 1 1.71477e+01 1.14714e+00 1963 2011 2 1.78733e+01 7.83769e-01 1628 2011 3 2.01042e+01 1.32684e+00 2680 2011 4 2.43530e+01 1.41696e+00 3011 2011 5 2.67034e+01 1.13654e+00 3408 2011 6 2.85823e+01 1.34873e+00 2666 2011 7 2.93815e+01 1.54400e+00 1995 2011 8 3.02381e+01 1.38678e+00 2226 2011 9 2.93134e+01 1.11884e+00 2462 2011 10 2.80503e+01 1.49040e+00 1706 2011 11 2.41237e+01 8.17632e-01 3363 2011 12 2.16969e+01 6.84898e-01 2879 2012 1 1.98112e+01 7.61151e-01 2989 2012 2 2.01015e+01 9.63592e-01 1479 2012 3 2.23658e+01 9.73974e-01 3884 2012 4 2.41231e+01 1.05996e+00 2900 2012 5 2.63469e+01 1.11365e+00 2938 2012 6 2.78549e+01 1.13508e+00 1661 2012 7 2.89655e+01 1.40173e+00 2101 2012 8 2.95657e+01 1.35855e+00 2133 2012 9 2.83785e+01 1.05072e+00 2181 2012 10 2.70825e+01 9.78774e-01 2557 2012 11 2.31320e+01 1.18698e+00 2849 2012 12 2.15701e+01 7.18734e-01 2313 2013 1 2.07167e+01 5.93479e-01 2091 2013 2 2.03757e+01 7.62341e-01 2208 2013 3 1.99166e+01 7.31661e-01 2387 2013 4 2.21219e+01 2.16720e+00 2032 2013 5 2.49586e+01 1.25499e+00 2808 2013 6 2.84184e+01 1.43404e+00 2300 2013 7 2.87803e+01 1.08189e+00 2128 2013 8 2.95724e+01 1.24657e+00 1959 2013 9 2.95144e+01 1.31681e+00 2071 2013 10 2.78605e+01 1.18932e+00 2572 2013 11 2.43894e+01 1.23114e+00 2166 2013 12 2.27779e+01 6.11624e-01 2444 2014 1 2.03710e+01 1.35327e+00 1830 2014 2 2.05902e+01 8.67238e-01 2066 2014 3 2.17797e+01 7.23387e-01 2610 2014 4 2.31199e+01 2.05899e+00 2209 2014 5 2.54677e+01 1.04825e+00 2276 2014 6 2.82397e+01 1.37700e+00 2323 2014 7 3.01207e+01 1.25824e+00 2483 2014 8 3.05593e+01 1.25003e+00 2540 2014 9 3.00502e+01 1.29087e+00 1245 2014 10 2.84814e+01 1.12721e+00 2832 2014 11 2.45175e+01 1.46385e+00 2547 2014 12 2.16910e+01 7.51225e-01 2284 2015 1 2.06723e+01 9.68776e-01 1831 2015 2 1.91607e+01 6.93417e-01 2175 2015 3 2.21768e+01 1.48762e+00 2666 2015 4 2.48217e+01 1.72186e+00 2466 2015 5 2.74412e+01 1.18167e+00 3931 2015 6 2.92301e+01 1.36750e+00 2284 2015 7 2.99848e+01 1.16401e+00 1723 2015 8 3.01782e+01 1.29307e+00 1809 2015 9 2.96968e+01 1.26926e+00 1154 2015 10 2.81337e+01 1.11762e+00 2338 2015 11 2.65309e+01 9.72341e-01 3108 2015 12 2.37378e+01 6.41024e-01 1614 2016 1 2.25805e+01 1.53016e+00 966 2016 2 1.93310e+01 1.01587e+00 2131 2016 3 2.09236e+01 1.15791e+00 1320 2016 4 2.32205e+01 1.16639e+00 2705 2016 5 2.60364e+01 1.68709e+00 2628 2016 6 2.82661e+01 1.41229e+00 2774 2016 7 3.01035e+01 1.10294e+00 2389 2016 8 3.00047e+01 1.08356e+00 2421 2016 9 2.95939e+01 1.34368e+00 2600 2016 10 2.73107e+01 1.40581e+00 2860 2016 11 2.43228e+01 1.14851e+00 3269 2016 12 2.26121e+01 7.49953e-01 2882 2017 1 2.06635e+01 9.68929e-01 2832 2017 2 2.03098e+01 7.44191e-01 2417 2017 3 2.13326e+01 9.81839e-01 3675 2017 4 2.30760e+01 7.94383e-01 2787 2017 5 2.58790e+01 1.30726e+00 2970 2017 6 2.83978e+01 1.29841e+00 1825 2017 7 2.98923e+01 1.07630e+00 2282 2017 8 3.07462e+01 1.18271e+00 2262 2017 9 2.95153e+01 9.84501e-01 2486 2017 10 2.76316e+01 1.29620e+00 2653 2017 11 2.45961e+01 5.80460e-01 3293 2017 12 2.30222e+01 1.17950e+00 3035 2018 1 1.94564e+01 1.31580e+00 1759 2018 2 2.06455e+01 1.94803e+00 2702 2018 3 2.16311e+01 9.49730e-01 3429 2018 4 2.33994e+01 1.09527e+00 2679 2018 5 2.43607e+01 7.82187e-01 1655 2018 6 2.83755e+01 1.75221e+00 2200 2018 7 3.00206e+01 1.16997e+00 2330 2018 8 3.01909e+01 7.74307e-01 2526 2018 9 3.00448e+01 1.04975e+00 2103 2018 10 2.81246e+01 1.04146e+00 3177 2018 11 2.55754e+01 1.09828e+00 2094 2018 12 2.22136e+01 1.47180e+00 2239 2019 1 2.06804e+01 1.00774e+00 1953 2019 2 2.10527e+01 1.40910e+00 1905 2019 3 2.21819e+01 8.11841e-01 2800 2019 4 2.38184e+01 1.09395e+00 2381 2019 5 2.69439e+01 1.15992e+00 3180 2019 6 2.96116e+01 1.32813e+00 2722 2019 7 3.02149e+01 1.04472e+00 2360 2019 8 2.99185e+01 1.02869e+00 1829 2019 9 2.96581e+01 1.00449e+00 3110 2019 10 2.82752e+01 7.19744e-01 2871 2019 11 2.64923e+01 1.46314e+00 2440 2019 12 2.33822e+01 1.04397e+00 1789 2020 1 2.16708e+01 9.15387e-01 3019 2020 2 2.06754e+01 1.01802e+00 2168 2020 3 2.25179e+01 1.83370e+00 3649 2020 4 2.52638e+01 9.41110e-01 2257 2020 5 2.59417e+01 1.09573e+00 2791 2020 6 2.93584e+01 1.40067e+00 1970 2020 7 3.03137e+01 8.72214e-01 2262 2020 8 3.06071e+01 1.05564e+00 1673 2020 9 2.98497e+01 1.10478e+00 1820 2020 10 2.82982e+01 9.80838e-01 1674 2020 11 2.56920e+01 1.22205e+00 2851 2020 12 2.21779e+01 1.07444e+00 2602 2021 1 1.96822e+01 8.46435e-01 2158 2021 2 2.01291e+01 9.68034e-01 2529 2021 3 2.14269e+01 1.11918e+00 3205 2021 4 2.33037e+01 1.41740e+00 3128 2021 5 2.61785e+01 1.14189e+00 3289 2021 6 2.73358e+01 1.06396e+00 1205 2021 7 2.94466e+01 9.93147e-01 2435 2021 8 3.01000e+01 1.05623e+00 2146 2021 9 3.01503e+01 8.53676e-01 2126 2021 10 2.91170e+01 9.54295e-01 2490 2021 11 2.48819e+01 1.37389e+00 2689 2021 12 2.33586e+01 5.15986e-01 3907 2022 1 2.21587e+01 1.09255e+00 2210 2022 2 1.98878e+01 1.29267e+00 2429 2022 3 2.17606e+01 9.61201e-01 3484 2022 4 2.40801e+01 1.16473e+00 1827 2022 5 2.66883e+01 1.17938e+00 3042 2022 6 2.86673e+01 1.31068e+00 2584 2022 7 3.01363e+01 1.42409e+00 2277 2022 8 3.06267e+01 9.14667e-01 2077 2022 9 3.06226e+01 1.11799e+00 1478 2022 10 2.79211e+01 1.02786e+00 2692 2022 11 2.59039e+01 1.16806e+00 2376 2022 12 2.40477e+01 1.28493e+00 2801 2023 1 2.11623e+01 7.45863e-01 2902 2023 2 2.17413e+01 1.38329e+00 3273 2023 3 2.36746e+01 8.32129e-01 3840 2023 4 2.53309e+01 9.00147e-01 2703 2023 5 2.71860e+01 1.05760e+00 3566 2023 6 2.81916e+01 1.21618e+00 2397 2023 7 3.11234e+01 9.95908e-01 2158 2023 8 3.13953e+01 1.05493e+00 2176 2023 9 3.06627e+01 1.05288e+00 2832 2023 10 2.84285e+01 1.23983e+00 2708 2023 11 2.56394e+01 8.99732e-01 2133 2023 12 2.28660e+01 1.80676e+00 1115 2024 1 2.10451e+01 9.82176e-01 1145 2024 2 2.03696e+01 4.69954e-01 2147 2024 3 2.23815e+01 9.92433e-01 1696 2024 4 2.20805e+01 5.72478e-01 161