YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.39728e+01 4.55355e-01 128 2000 3 2.45291e+01 5.62805e-01 646 2000 4 2.52389e+01 5.17667e-01 666 2000 5 2.70139e+01 1.05670e+00 632 2000 6 2.70702e+01 1.66735e+00 270 2000 7 3.03554e+01 9.05205e-01 647 2000 8 2.96229e+01 8.50830e-01 377 2000 9 2.89441e+01 1.26183e+00 554 2000 10 2.74317e+01 1.11752e+00 627 2000 11 2.61411e+01 7.25427e-01 625 2000 12 2.42623e+01 4.13312e-01 371 2001 1 2.22326e+01 8.10932e-01 519 2001 2 2.36358e+01 1.03685e+00 785 2001 3 2.32036e+01 9.40890e-01 730 2001 4 2.50960e+01 8.15869e-01 840 2001 5 2.59665e+01 7.72823e-01 381 2001 6 2.81131e+01 2.18690e+00 248 2001 7 2.79509e+01 1.56344e+00 555 2001 8 2.91869e+01 1.43986e+00 636 2001 9 2.79138e+01 9.08563e-01 402 2001 10 2.73892e+01 1.08197e+00 402 2001 11 2.56282e+01 5.44562e-01 517 2001 12 2.49269e+01 5.95206e-01 574 2002 1 2.33478e+01 6.20725e-01 607 2002 2 2.32537e+01 1.06645e+00 287 2002 3 2.45770e+01 9.99928e-01 556 2002 4 2.68259e+01 8.42680e-01 762 2002 5 2.72263e+01 7.31081e-01 819 2002 6 2.79078e+01 1.43214e+00 237 2002 7 2.91753e+01 1.34734e+00 2093 2002 8 2.98237e+01 8.41314e-01 1876 2002 9 2.88565e+01 9.47987e-01 1877 2002 10 2.81763e+01 6.96605e-01 3071 2002 11 2.68671e+01 1.09342e+00 2266 2002 12 2.41481e+01 1.11267e+00 2400 2003 1 2.17587e+01 1.20220e+00 2133 2003 2 2.24874e+01 8.89348e-01 2685 2003 3 2.57284e+01 1.32703e+00 2596 2003 4 2.48931e+01 1.16400e+00 2530 2003 5 2.78979e+01 1.01675e+00 2952 2003 6 2.88949e+01 7.98571e-01 1309 2003 7 2.87913e+01 1.17522e+00 1787 2003 8 2.97118e+01 1.01869e+00 2140 2003 9 2.94602e+01 8.03843e-01 1702 2003 10 2.85152e+01 1.08090e+00 2751 2003 11 2.64362e+01 6.40669e-01 2359 2003 12 2.38868e+01 1.37774e+00 2096 2004 1 2.32017e+01 8.90268e-01 2408 2004 2 2.32930e+01 1.04802e+00 2331 2004 3 2.42497e+01 7.82314e-01 2517 2004 4 2.41916e+01 9.40795e-01 2603 2004 5 2.65930e+01 1.32303e+00 2829 2004 6 2.91943e+01 8.41741e-01 2575 2004 7 2.97372e+01 1.02927e+00 1850 2004 8 3.04575e+01 1.05145e+00 2033 2004 9 2.90079e+01 1.18115e+00 2090 2004 10 2.77169e+01 8.53318e-01 2269 2004 11 2.62777e+01 9.08914e-01 2105 2004 12 2.43251e+01 1.15664e+00 1723 2005 1 2.30914e+01 8.35484e-01 2403 2005 2 2.29086e+01 8.43993e-01 2179 2005 3 2.33591e+01 1.42298e+00 2642 2005 4 2.41707e+01 8.50366e-01 3026 2005 5 2.61777e+01 1.60721e+00 2456 2005 6 2.86859e+01 1.06669e+00 1491 2005 7 2.94835e+01 1.05121e+00 2617 2005 8 3.01405e+01 1.43176e+00 2779 2005 9 2.92372e+01 1.26964e+00 2467 2005 10 2.75564e+01 1.37157e+00 1717 2005 11 2.51835e+01 9.30519e-01 2449 2005 12 2.38121e+01 1.00590e+00 2686 2006 1 2.25368e+01 1.07519e+00 2025 2006 2 2.26374e+01 7.89944e-01 2966 2006 3 2.39902e+01 1.30438e+00 3478 2006 4 2.58539e+01 1.24425e+00 3351 2006 5 2.71970e+01 1.05700e+00 2726 2006 6 2.91218e+01 8.82598e-01 2691 2006 7 2.87853e+01 1.11677e+00 1507 2006 8 2.96635e+01 1.10252e+00 2036 2006 9 2.97931e+01 1.03658e+00 2069 2006 10 2.83890e+01 1.01056e+00 2840 2006 11 2.56800e+01 9.86473e-01 1944 2006 12 2.46701e+01 8.08067e-01 957 2007 1 2.44629e+01 5.94622e-01 2261 2007 2 2.32516e+01 1.03851e+00 1783 2007 3 2.38975e+01 6.61560e-01 2263 2007 4 2.47894e+01 1.18805e+00 3090 2007 5 2.66368e+01 1.26558e+00 2765 2007 6 2.83201e+01 1.50461e+00 1982 2007 7 3.02400e+01 8.11340e-01 2472 2007 8 2.99619e+01 9.62571e-01 2331 2007 9 2.99704e+01 9.29161e-01 1729 2007 10 2.79792e+01 9.40818e-01 1758 2007 11 2.62474e+01 7.87132e-01 2713 2007 12 2.50066e+01 7.25893e-01 2168 2008 1 2.36537e+01 9.36312e-01 2226 2008 2 2.39908e+01 9.85339e-01 2244 2008 3 2.35232e+01 8.56001e-01 2233 2008 4 2.53742e+01 7.30264e-01 3387 2008 5 2.73139e+01 1.42554e+00 3314 2008 6 2.83877e+01 1.11194e+00 2478 2008 7 2.90970e+01 1.19606e+00 2147 2008 8 2.98567e+01 9.11274e-01 2341 2008 9 2.87996e+01 8.71380e-01 1972 2008 10 2.78604e+01 1.11854e+00 1862 2008 11 2.51982e+01 9.24747e-01 2247 2008 12 2.36283e+01 7.18672e-01 2169 2009 1 2.24225e+01 1.18314e+00 2652 2009 2 2.22258e+01 1.06647e+00 2582 2009 3 2.34555e+01 9.32011e-01 2113 2009 4 2.48223e+01 8.09568e-01 3080 2009 5 2.67449e+01 1.22965e+00 3167 2009 6 2.94291e+01 1.11930e+00 1920 2009 7 2.97773e+01 9.24719e-01 2463 2009 8 2.98787e+01 6.62823e-01 2287 2009 9 2.99457e+01 1.15172e+00 2106 2009 10 2.89438e+01 1.21901e+00 2969 2009 11 2.68480e+01 1.09257e+00 1855 2009 12 2.50090e+01 1.23244e+00 2069 2010 1 2.26528e+01 1.12921e+00 1789 2010 2 2.14842e+01 1.29223e+00 1438 2010 3 2.12188e+01 1.08500e+00 2462 2010 4 2.39436e+01 1.36387e+00 2225 2010 5 2.74701e+01 1.22521e+00 3193 2010 6 2.98567e+01 8.67948e-01 2701 2010 7 2.90859e+01 1.08688e+00 1792 2010 8 3.04562e+01 1.08327e+00 2060 2010 9 2.93374e+01 1.15213e+00 1757 2010 10 2.77826e+01 7.93406e-01 2913 2010 11 2.57528e+01 1.14404e+00 2297 2010 12 2.30070e+01 1.61678e+00 2802 2011 1 2.14552e+01 1.00268e+00 2281 2011 2 2.21160e+01 8.82517e-01 2781 2011 3 2.38842e+01 9.62991e-01 3138 2011 4 2.60971e+01 7.57733e-01 3593 2011 5 2.76180e+01 9.21800e-01 3545 2011 6 2.84888e+01 1.32031e+00 2043 2011 7 2.98063e+01 1.10970e+00 1750 2011 8 3.01878e+01 1.10830e+00 1617 2011 9 3.00851e+01 9.12211e-01 2256 2011 10 2.80735e+01 1.21069e+00 1083 2011 11 2.53996e+01 7.32879e-01 2896 2011 12 2.44182e+01 7.26426e-01 2445 2012 1 2.28674e+01 8.01792e-01 2498 2012 2 2.39246e+01 7.67610e-01 1786 2012 3 2.46561e+01 8.35948e-01 3107 2012 4 2.55682e+01 1.05489e+00 2524 2012 5 2.66868e+01 1.21390e+00 1853 2012 6 2.84348e+01 9.55117e-01 1484 2012 7 2.90243e+01 1.19625e+00 2456 2012 8 2.98273e+01 1.23288e+00 2277 2012 9 2.96402e+01 7.75668e-01 1852 2012 10 2.77742e+01 1.16824e+00 2153 2012 11 2.62729e+01 1.12901e+00 2267 2012 12 2.51093e+01 8.72421e-01 2184 2013 1 2.39590e+01 7.75842e-01 2147 2013 2 2.38247e+01 7.19937e-01 2530 2013 3 2.36412e+01 9.47190e-01 2788 2013 4 2.54649e+01 1.49700e+00 2797 2013 5 2.66528e+01 8.39855e-01 2901 2013 6 2.80218e+01 1.26331e+00 1773 2013 7 2.90804e+01 1.17108e+00 1976 2013 8 2.93774e+01 7.04734e-01 1601 2013 9 2.91425e+01 9.19412e-01 1780 2013 10 2.83985e+01 8.61235e-01 2567 2013 11 2.71731e+01 7.98291e-01 1534 2013 12 2.54333e+01 8.25179e-01 2385 2014 1 2.43522e+01 9.75321e-01 2133 2014 2 2.48942e+01 9.22338e-01 3307 2014 3 2.42795e+01 9.60806e-01 2890 2014 4 2.57837e+01 1.05230e+00 2783 2014 5 2.67630e+01 9.50155e-01 2527 2014 6 2.89211e+01 1.36154e+00 2512 2014 7 3.02469e+01 1.07569e+00 2412 2014 8 3.09195e+01 9.13170e-01 3360 2014 9 2.96603e+01 1.13505e+00 1503 2014 10 2.82979e+01 1.23110e+00 2709 2014 11 2.57592e+01 8.51835e-01 2393 2014 12 2.46623e+01 7.18100e-01 2802 2015 1 2.44630e+01 9.25911e-01 1762 2015 2 2.32214e+01 8.64783e-01 2555 2015 3 2.50583e+01 1.03846e+00 3167 2015 4 2.66353e+01 1.42676e+00 2759 2015 5 2.75814e+01 9.83586e-01 3145 2015 6 2.90947e+01 1.10758e+00 2201 2015 7 2.98308e+01 1.26805e+00 2480 2015 8 3.06938e+01 9.73841e-01 2786 2015 9 3.02359e+01 1.09644e+00 1552 2015 10 2.84259e+01 1.15631e+00 2192 2015 11 2.76737e+01 9.43261e-01 2645 2015 12 2.57690e+01 6.61476e-01 1696 2016 1 2.49828e+01 1.37512e+00 1073 2016 2 2.37586e+01 8.20157e-01 1648 2016 3 2.43345e+01 1.43709e+00 1484 2016 4 2.57062e+01 9.18434e-01 2801 2016 5 2.76473e+01 1.24343e+00 3091 2016 6 2.91757e+01 1.04756e+00 2461 2016 7 3.01104e+01 8.02143e-01 2528 2016 8 3.01634e+01 9.79673e-01 1706 2016 9 3.00315e+01 1.14592e+00 2296 2016 10 2.85413e+01 8.21938e-01 1699 2016 11 2.64544e+01 1.10273e+00 2310 2016 12 2.55587e+01 6.41123e-01 2481 2017 1 2.38189e+01 9.80258e-01 2169 2017 2 2.38733e+01 6.19395e-01 2947 2017 3 2.40505e+01 1.00715e+00 2537 2017 4 2.55863e+01 7.87040e-01 1966 2017 5 2.72796e+01 1.23369e+00 2790 2017 6 2.88685e+01 1.17444e+00 1510 2017 7 2.98569e+01 9.79522e-01 2257 2017 8 3.05324e+01 1.10512e+00 2518 2017 9 2.97719e+01 9.68785e-01 2222 2017 10 2.82081e+01 8.65404e-01 1779 2017 11 2.61992e+01 7.57621e-01 3375 2017 12 2.50972e+01 9.93944e-01 3377 2018 1 2.34493e+01 1.16578e+00 1471 2018 2 2.42324e+01 9.13374e-01 3184 2018 3 2.46535e+01 9.31653e-01 3593 2018 4 2.59946e+01 1.14161e+00 3044 2018 5 2.55435e+01 1.10830e+00 1093 2018 6 2.91811e+01 1.29680e+00 1742 2018 7 3.06016e+01 1.42112e+00 2328 2018 8 3.01840e+01 1.04751e+00 3026 2018 9 2.99675e+01 8.98025e-01 2559 2018 10 2.81909e+01 8.51140e-01 3111 2018 11 2.70549e+01 7.35301e-01 2213 2018 12 2.46364e+01 1.29117e+00 2122 2019 1 2.38582e+01 1.07423e+00 2408 2019 2 2.48216e+01 1.27155e+00 3092 2019 3 2.57773e+01 8.53898e-01 3124 2019 4 2.61716e+01 5.37098e-01 3034 2019 5 2.76040e+01 9.40003e-01 3158 2019 6 3.01676e+01 1.58444e+00 2433 2019 7 2.99895e+01 1.26280e+00 2470 2019 8 3.04622e+01 1.33147e+00 2163 2019 9 2.91682e+01 1.29669e+00 2268 2019 10 2.83904e+01 8.24643e-01 2580 2019 11 2.73529e+01 1.11808e+00 2823 2019 12 2.49746e+01 9.75897e-01 2441 2020 1 2.45454e+01 7.13302e-01 2632 2020 2 2.48324e+01 8.05453e-01 2470 2020 3 2.51718e+01 8.55170e-01 3383 2020 4 2.72563e+01 1.24104e+00 2746 2020 5 2.73899e+01 1.27229e+00 1940 2020 6 2.95352e+01 8.13778e-01 1847 2020 7 3.01924e+01 1.37450e+00 2222 2020 8 3.05272e+01 1.00040e+00 2281 2020 9 3.00821e+01 1.03131e+00 1560 2020 10 2.87690e+01 1.27288e+00 1496 2020 11 2.66297e+01 9.57571e-01 1632 2020 12 2.46879e+01 1.26283e+00 2377 2021 1 2.35182e+01 5.77194e-01 2341 2021 2 2.36864e+01 1.46568e+00 3019 2021 3 2.46888e+01 7.73554e-01 3083 2021 4 2.56838e+01 1.14747e+00 2583 2021 5 2.77681e+01 1.13366e+00 2958 2021 6 2.79056e+01 1.19288e+00 1395 2021 7 2.93735e+01 1.44929e+00 2630 2021 8 2.99925e+01 1.32788e+00 2165 2021 9 3.03306e+01 9.71683e-01 2701 2021 10 2.87864e+01 8.93819e-01 2670 2021 11 2.63837e+01 8.18071e-01 2010 2021 12 2.54488e+01 5.92134e-01 3151 2022 1 2.43028e+01 1.04420e+00 2311 2022 2 2.40902e+01 7.58948e-01 2696 2022 3 2.54994e+01 7.35951e-01 3261 2022 4 2.62686e+01 8.19920e-01 1598 2022 5 2.77358e+01 1.09157e+00 2872 2022 6 2.93103e+01 1.22058e+00 2278 2022 7 2.97727e+01 8.85476e-01 2329 2022 8 3.02953e+01 8.42408e-01 2552 2022 9 3.07652e+01 1.04197e+00 2631 2022 10 2.79494e+01 8.93049e-01 2108 2022 11 2.71760e+01 7.34487e-01 2591 2022 12 2.57431e+01 8.49263e-01 2428 2023 1 2.45798e+01 9.09999e-01 3476 2023 2 2.50341e+01 8.42519e-01 3143 2023 3 2.56214e+01 9.78253e-01 2967 2023 4 2.71093e+01 9.09849e-01 2447 2023 5 2.81706e+01 1.14594e+00 2703 2023 6 2.98328e+01 9.00401e-01 1677 2023 7 3.13306e+01 1.17808e+00 2430 2023 8 3.13661e+01 1.01630e+00 2511 2023 9 3.09248e+01 9.51514e-01 2113 2023 10 2.89519e+01 1.30452e+00 2381 2023 11 2.69361e+01 9.64473e-01 2125 2023 12 2.50345e+01 1.16963e+00 1232 2024 1 2.42820e+01 1.01937e+00 1391 2024 2 2.28189e+01 8.62247e-01 2407 2024 3 2.51576e+01 7.97986e-01 2179 2024 4 2.46277e+01 3.82076e-01 146