YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.40416e+01 2.31958e-01 128 2000 3 2.32513e+01 7.39802e-01 505 2000 4 2.44937e+01 6.84400e-01 813 2000 5 2.63336e+01 1.59450e+00 702 2000 6 2.79426e+01 7.85573e-01 460 2000 7 2.89883e+01 2.06508e+00 776 2000 8 2.83574e+01 1.11165e+00 190 2000 9 2.90633e+01 8.54317e-01 638 2000 10 2.75049e+01 1.53787e+00 726 2000 11 2.54116e+01 4.07710e-01 538 2000 12 2.39696e+01 6.16066e-01 659 2001 1 2.21220e+01 1.22146e+00 602 2001 2 2.35778e+01 6.57191e-01 583 2001 3 2.22050e+01 6.31834e-01 386 2001 4 2.37587e+01 1.43920e+00 851 2001 5 2.52523e+01 6.95605e-01 427 2001 6 2.68415e+01 1.53540e+00 380 2001 7 2.87417e+01 7.64792e-01 539 2001 8 3.00016e+01 4.91058e-01 432 2001 9 2.84092e+01 6.06654e-01 384 2001 10 2.74404e+01 9.35789e-01 409 2001 11 2.59391e+01 6.18132e-01 488 2001 12 2.45041e+01 1.23925e+00 590 2002 1 2.24823e+01 1.02702e+00 461 2002 2 2.30101e+01 9.68871e-01 426 2002 3 2.32812e+01 8.39019e-01 448 2002 4 2.62398e+01 8.01977e-01 728 2002 5 2.67818e+01 5.03354e-01 847 2002 6 2.82631e+01 7.03147e-01 203 2002 7 2.88194e+01 1.04164e+00 2004 2002 8 2.96420e+01 7.06075e-01 1454 2002 9 2.81840e+01 1.16369e+00 1112 2002 10 2.83213e+01 7.71394e-01 3220 2002 11 2.64550e+01 1.53895e+00 2071 2002 12 2.36263e+01 9.15966e-01 2147 2003 1 2.05314e+01 1.15001e+00 1995 2003 2 2.07759e+01 1.38435e+00 1934 2003 3 2.34301e+01 1.36306e+00 1696 2003 4 2.43115e+01 9.06129e-01 2897 2003 5 2.71413e+01 1.06556e+00 3051 2003 6 2.90604e+01 1.22274e+00 1897 2003 7 2.89383e+01 1.28205e+00 1740 2003 8 2.97462e+01 1.34229e+00 1692 2003 9 2.92601e+01 9.80424e-01 1736 2003 10 2.80931e+01 1.28994e+00 2427 2003 11 2.56850e+01 9.53127e-01 2550 2003 12 2.33323e+01 1.34060e+00 1853 2004 1 2.36979e+01 1.11566e+00 2617 2004 2 2.30164e+01 7.08042e-01 2033 2004 3 2.37767e+01 8.82178e-01 2840 2004 4 2.37893e+01 8.75589e-01 2890 2004 5 2.54800e+01 1.10078e+00 2847 2004 6 2.84060e+01 8.69359e-01 2695 2004 7 2.86430e+01 1.01135e+00 2011 2004 8 2.98353e+01 1.02856e+00 2332 2004 9 2.89784e+01 1.35637e+00 2212 2004 10 2.77300e+01 7.43940e-01 2640 2004 11 2.63729e+01 5.09013e-01 2953 2004 12 2.42911e+01 1.34578e+00 2424 2005 1 2.29242e+01 9.84874e-01 3286 2005 2 2.16864e+01 1.09111e+00 2546 2005 3 2.28053e+01 1.06403e+00 1787 2005 4 2.39871e+01 7.76496e-01 2877 2005 5 2.55831e+01 1.38984e+00 2720 2005 6 2.76596e+01 8.21721e-01 1450 2005 7 2.90488e+01 8.98099e-01 2089 2005 8 3.02375e+01 1.29458e+00 2318 2005 9 2.85193e+01 1.03463e+00 2194 2005 10 2.74051e+01 9.36021e-01 1842 2005 11 2.52845e+01 9.17594e-01 2406 2005 12 2.30728e+01 1.08165e+00 2330 2006 1 2.20140e+01 7.98463e-01 2434 2006 2 2.05281e+01 8.36743e-01 2621 2006 3 2.33965e+01 1.57111e+00 3051 2006 4 2.53386e+01 1.03953e+00 3482 2006 5 2.67569e+01 8.66061e-01 2549 2006 6 2.80386e+01 7.31292e-01 2443 2006 7 2.88151e+01 6.25741e-01 1330 2006 8 2.96579e+01 9.18693e-01 1994 2006 9 3.03989e+01 7.61987e-01 2449 2006 10 2.82404e+01 1.09597e+00 2218 2006 11 2.56970e+01 8.98451e-01 1673 2006 12 2.47022e+01 5.19533e-01 1347 2007 1 2.44410e+01 6.66745e-01 2551 2007 2 2.27831e+01 9.47063e-01 1451 2007 3 2.37659e+01 7.11464e-01 2805 2007 4 2.45543e+01 9.73864e-01 2826 2007 5 2.65614e+01 8.17786e-01 2921 2007 6 2.79188e+01 9.95254e-01 2539 2007 7 2.99837e+01 9.71469e-01 2206 2007 8 3.00340e+01 1.03117e+00 2476 2007 9 2.98386e+01 1.05227e+00 1672 2007 10 2.79078e+01 1.48200e+00 1479 2007 11 2.60492e+01 7.28963e-01 2728 2007 12 2.44054e+01 6.36444e-01 3234 2008 1 2.37342e+01 6.16434e-01 2247 2008 2 2.37447e+01 1.27981e+00 2470 2008 3 2.29693e+01 1.07415e+00 2508 2008 4 2.51350e+01 7.62476e-01 3264 2008 5 2.68359e+01 1.10144e+00 3623 2008 6 2.80586e+01 8.71734e-01 2383 2008 7 2.89528e+01 1.34307e+00 1994 2008 8 3.01267e+01 8.12595e-01 2851 2008 9 2.85829e+01 9.20157e-01 1826 2008 10 2.77694e+01 7.75265e-01 1665 2008 11 2.44289e+01 1.02064e+00 2495 2008 12 2.35762e+01 9.27522e-01 3019 2009 1 2.19801e+01 1.55347e+00 2410 2009 2 2.08869e+01 1.19895e+00 3212 2009 3 2.26917e+01 1.10279e+00 2781 2009 4 2.48234e+01 6.59213e-01 2999 2009 5 2.60371e+01 1.24900e+00 3107 2009 6 2.87074e+01 1.06216e+00 2286 2009 7 2.86648e+01 1.14172e+00 2072 2009 8 2.97979e+01 7.44667e-01 2526 2009 9 3.00747e+01 1.12312e+00 2217 2009 10 2.93773e+01 1.15314e+00 3256 2009 11 2.62881e+01 1.28599e+00 1416 2009 12 2.52265e+01 9.95416e-01 1892 2010 1 2.27376e+01 1.25758e+00 1452 2010 2 2.08911e+01 1.52985e+00 1083 2010 3 2.03744e+01 1.20426e+00 2101 2010 4 2.37169e+01 1.41683e+00 2539 2010 5 2.69325e+01 1.21789e+00 3326 2010 6 2.97834e+01 9.94726e-01 2732 2010 7 2.87718e+01 9.35728e-01 2042 2010 8 2.99900e+01 1.16630e+00 2165 2010 9 2.95277e+01 1.01108e+00 1693 2010 10 2.75073e+01 9.79739e-01 2797 2010 11 2.56023e+01 9.72962e-01 2933 2010 12 2.27489e+01 1.13247e+00 2504 2011 1 2.12613e+01 6.74961e-01 2365 2011 2 2.03241e+01 1.35379e+00 2644 2011 3 2.23099e+01 1.67257e+00 2934 2011 4 2.55335e+01 7.66805e-01 3683 2011 5 2.66752e+01 9.60616e-01 3585 2011 6 2.85190e+01 1.06753e+00 2160 2011 7 2.94331e+01 1.12512e+00 1876 2011 8 3.06910e+01 9.24372e-01 2540 2011 9 2.98267e+01 7.60216e-01 2410 2011 10 2.82530e+01 1.20434e+00 1455 2011 11 2.51577e+01 7.51822e-01 2876 2011 12 2.41501e+01 5.54691e-01 2278 2012 1 2.31240e+01 8.80104e-01 2489 2012 2 2.39679e+01 5.25383e-01 1608 2012 3 2.47234e+01 5.29823e-01 3128 2012 4 2.52614e+01 9.86576e-01 2144 2012 5 2.64114e+01 1.20058e+00 2567 2012 6 2.80463e+01 1.07709e+00 1457 2012 7 2.83726e+01 1.19009e+00 2329 2012 8 2.87957e+01 1.11513e+00 2081 2012 9 2.86501e+01 9.20980e-01 2179 2012 10 2.75226e+01 1.01450e+00 2459 2012 11 2.56346e+01 1.03532e+00 2557 2012 12 2.49867e+01 7.34527e-01 2561 2013 1 2.38533e+01 7.93078e-01 2292 2013 2 2.35722e+01 7.14020e-01 2654 2013 3 2.28020e+01 6.64324e-01 2344 2013 4 2.52208e+01 1.52872e+00 2743 2013 5 2.61077e+01 1.00322e+00 2994 2013 6 2.80020e+01 1.03436e+00 2029 2013 7 2.90388e+01 1.35764e+00 2193 2013 8 2.94641e+01 7.78105e-01 1565 2013 9 2.93178e+01 8.93251e-01 1866 2013 10 2.85525e+01 8.88448e-01 2429 2013 11 2.65481e+01 1.00539e+00 1902 2013 12 2.54505e+01 7.42241e-01 2059 2014 1 2.40131e+01 1.14692e+00 1771 2014 2 2.43149e+01 7.22731e-01 3055 2014 3 2.44571e+01 7.07320e-01 2965 2014 4 2.47944e+01 1.08908e+00 2696 2014 5 2.62915e+01 5.58421e-01 2797 2014 6 2.85270e+01 1.27925e+00 2523 2014 7 3.01793e+01 1.16046e+00 2909 2014 8 3.05052e+01 8.43942e-01 2532 2014 9 3.00602e+01 9.75166e-01 1687 2014 10 2.87753e+01 1.34062e+00 2241 2014 11 2.58679e+01 1.14207e+00 2594 2014 12 2.39010e+01 8.22602e-01 2319 2015 1 2.37462e+01 1.21261e+00 1816 2015 2 2.25600e+01 7.37547e-01 2220 2015 3 2.45941e+01 1.17957e+00 3342 2015 4 2.56745e+01 1.36796e+00 2877 2015 5 2.69488e+01 1.16595e+00 3081 2015 6 2.89395e+01 1.05368e+00 2422 2015 7 2.98406e+01 1.01859e+00 2482 2015 8 3.06366e+01 9.55772e-01 2551 2015 9 3.01078e+01 1.40219e+00 1528 2015 10 2.83663e+01 8.77690e-01 2131 2015 11 2.71189e+01 9.19677e-01 2821 2015 12 2.53509e+01 7.85141e-01 1769 2016 1 2.46521e+01 1.01031e+00 992 2016 2 2.35742e+01 8.39267e-01 1717 2016 3 2.44369e+01 1.17421e+00 1658 2016 4 2.57264e+01 6.58275e-01 2830 2016 5 2.67869e+01 1.42421e+00 3292 2016 6 2.73527e+01 1.31808e+00 2468 2016 7 2.93346e+01 8.65747e-01 2824 2016 8 2.95124e+01 8.63294e-01 2050 2016 9 2.93474e+01 1.12270e+00 2671 2016 10 2.84436e+01 8.69493e-01 1988 2016 11 2.65403e+01 1.15681e+00 3267 2016 12 2.54732e+01 8.42526e-01 2640 2017 1 2.40023e+01 1.03335e+00 2684 2017 2 2.31008e+01 9.92668e-01 2989 2017 3 2.42068e+01 8.64795e-01 3331 2017 4 2.54945e+01 7.74971e-01 2325 2017 5 2.67223e+01 1.07647e+00 3083 2017 6 2.85540e+01 9.95586e-01 1651 2017 7 2.94305e+01 9.81673e-01 2384 2017 8 3.01906e+01 1.01258e+00 2003 2017 9 2.97336e+01 8.54728e-01 1859 2017 10 2.80461e+01 1.21970e+00 1357 2017 11 2.61347e+01 7.74383e-01 3141 2017 12 2.51357e+01 7.62249e-01 2867 2018 1 2.27839e+01 1.43299e+00 1506 2018 2 2.28409e+01 1.47856e+00 2585 2018 3 2.47891e+01 7.40348e-01 2949 2018 4 2.53362e+01 8.65298e-01 3304 2018 5 2.54243e+01 1.11170e+00 1196 2018 6 2.82483e+01 1.15736e+00 2013 2018 7 2.98689e+01 1.16985e+00 2188 2018 8 2.97272e+01 8.12225e-01 2125 2018 9 2.90753e+01 1.11020e+00 2317 2018 10 2.79203e+01 7.43001e-01 3113 2018 11 2.66594e+01 6.56384e-01 1910 2018 12 2.48894e+01 1.19312e+00 2219 2019 1 2.38334e+01 1.24035e+00 1898 2019 2 2.46026e+01 1.14817e+00 2959 2019 3 2.52155e+01 8.93088e-01 3099 2019 4 2.60975e+01 8.66563e-01 2823 2019 5 2.70265e+01 6.73817e-01 3317 2019 6 2.94811e+01 1.19769e+00 2925 2019 7 2.97982e+01 1.00380e+00 2190 2019 8 3.03983e+01 1.21948e+00 2151 2019 9 2.93550e+01 8.47542e-01 2328 2019 10 2.83776e+01 8.61834e-01 2548 2019 11 2.72224e+01 1.21634e+00 2626 2019 12 2.52729e+01 9.22862e-01 2031 2020 1 2.39215e+01 1.09939e+00 3026 2020 2 2.34518e+01 1.19660e+00 2188 2020 3 2.49136e+01 8.61592e-01 3975 2020 4 2.64442e+01 9.62957e-01 2751 2020 5 2.69806e+01 1.15466e+00 2141 2020 6 2.93525e+01 1.14544e+00 1694 2020 7 2.98025e+01 1.12283e+00 1750 2020 8 3.01884e+01 1.42052e+00 1908 2020 9 2.99034e+01 7.48845e-01 1916 2020 10 2.88660e+01 8.24212e-01 1415 2020 11 2.65845e+01 7.41311e-01 2111 2020 12 2.45016e+01 1.13188e+00 2201 2021 1 2.23629e+01 1.03791e+00 1916 2021 2 2.24736e+01 1.22122e+00 2591 2021 3 2.40377e+01 7.18752e-01 3411 2021 4 2.50504e+01 1.03647e+00 3022 2021 5 2.68513e+01 9.08575e-01 2736 2021 6 2.77530e+01 7.82791e-01 1497 2021 7 2.91129e+01 1.07143e+00 2703 2021 8 3.04204e+01 1.14624e+00 1916 2021 9 3.00736e+01 8.41110e-01 2326 2021 10 2.88804e+01 9.94398e-01 2153 2021 11 2.60027e+01 8.54045e-01 1478 2021 12 2.55360e+01 5.03049e-01 3303 2022 1 2.44065e+01 1.00776e+00 1913 2022 2 2.36803e+01 9.60831e-01 2549 2022 3 2.54407e+01 6.55042e-01 3140 2022 4 2.54842e+01 6.61301e-01 2246 2022 5 2.71040e+01 9.54332e-01 2839 2022 6 2.87804e+01 1.20315e+00 2301 2022 7 2.97747e+01 7.01065e-01 2461 2022 8 3.02129e+01 9.79003e-01 2153 2022 9 3.05956e+01 1.02250e+00 2282 2022 10 2.80567e+01 7.92949e-01 2818 2022 11 2.71653e+01 5.07772e-01 2522 2022 12 2.56021e+01 1.25680e+00 2797 2023 1 2.39734e+01 1.13338e+00 3104 2023 2 2.47198e+01 6.16393e-01 3255 2023 3 2.55961e+01 7.17134e-01 3366 2023 4 2.66010e+01 8.90317e-01 2864 2023 5 2.79897e+01 8.91489e-01 3379 2023 6 2.83669e+01 9.03984e-01 2941 2023 7 3.09599e+01 7.53369e-01 2410 2023 8 3.15480e+01 1.03134e+00 2060 2023 9 3.03891e+01 1.06565e+00 2705 2023 10 2.89906e+01 1.14014e+00 2448 2023 11 2.68143e+01 9.23091e-01 2102 2023 12 2.54424e+01 1.11567e+00 877 2024 1 2.42792e+01 1.06326e+00 1511 2024 2 2.25932e+01 9.52919e-01 2378 2024 3 2.41435e+01 1.23085e+00 2462 2024 4 2.43404e+01 5.84350e-01 346