YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.35189e+01 3.30376e-01 192 2000 3 2.45958e+01 4.61887e-01 576 2000 4 2.41922e+01 8.29057e-01 440 2000 5 2.67437e+01 1.40405e+00 635 2000 6 2.79065e+01 1.12593e+00 512 2000 7 2.94383e+01 1.86429e+00 427 2000 8 2.98393e+01 9.55369e-01 169 2000 9 2.91062e+01 9.33796e-01 514 2000 10 2.76055e+01 1.54527e+00 532 2000 11 2.60295e+01 6.10539e-01 775 2000 12 2.45956e+01 6.82388e-01 640 2001 1 2.24204e+01 8.89829e-01 436 2001 2 2.29080e+01 6.99150e-01 414 2001 3 2.21092e+01 9.74032e-01 599 2001 4 2.50483e+01 1.79528e+00 719 2001 5 2.51275e+01 7.53538e-01 464 2001 6 2.73682e+01 1.51452e+00 320 2001 7 2.88076e+01 6.47541e-01 576 2001 8 2.93404e+01 9.72906e-01 341 2001 9 2.88316e+01 9.63728e-01 386 2001 10 2.74986e+01 6.50932e-01 274 2001 11 2.58137e+01 6.61601e-01 566 2001 12 2.45186e+01 1.31814e+00 577 2002 1 2.28489e+01 8.34165e-01 465 2002 2 2.28595e+01 7.46386e-01 447 2002 3 2.29026e+01 7.61161e-01 488 2002 4 2.64036e+01 5.63096e-01 651 2002 5 2.61149e+01 1.14733e+00 749 2002 6 2.76849e+01 8.58425e-01 298 2002 7 2.88681e+01 1.05703e+00 1757 2002 8 2.97634e+01 7.21986e-01 1481 2002 9 2.85552e+01 1.08311e+00 1203 2002 10 2.82426e+01 8.22060e-01 3111 2002 11 2.66477e+01 1.28066e+00 2147 2002 12 2.38573e+01 8.39346e-01 1782 2003 1 2.19067e+01 1.06115e+00 1883 2003 2 2.04037e+01 1.26117e+00 1971 2003 3 2.48180e+01 8.41753e-01 2263 2003 4 2.43263e+01 7.33710e-01 2591 2003 5 2.70646e+01 1.18670e+00 3569 2003 6 2.84445e+01 1.12852e+00 1893 2003 7 2.89947e+01 1.25811e+00 1577 2003 8 2.97002e+01 1.19812e+00 2035 2003 9 2.94971e+01 7.28351e-01 1466 2003 10 2.78628e+01 1.29223e+00 2502 2003 11 2.51460e+01 8.64847e-01 2749 2003 12 2.30416e+01 1.07546e+00 1900 2004 1 2.39233e+01 6.37695e-01 2479 2004 2 2.33691e+01 5.75848e-01 1980 2004 3 2.37539e+01 8.78944e-01 2479 2004 4 2.36130e+01 1.27269e+00 2782 2004 5 2.56418e+01 9.61535e-01 2847 2004 6 2.88234e+01 1.14936e+00 2870 2004 7 2.96394e+01 1.08830e+00 2006 2004 8 3.00735e+01 7.55050e-01 2080 2004 9 2.92337e+01 1.23750e+00 2008 2004 10 2.79804e+01 9.33014e-01 2683 2004 11 2.62824e+01 6.29297e-01 2875 2004 12 2.41831e+01 1.50335e+00 2090 2005 1 2.30448e+01 7.83621e-01 2664 2005 2 2.17482e+01 1.25123e+00 2596 2005 3 2.29018e+01 9.35860e-01 1843 2005 4 2.36598e+01 6.45071e-01 2639 2005 5 2.55064e+01 1.20087e+00 2677 2005 6 2.77012e+01 9.73276e-01 1551 2005 7 2.87608e+01 1.10726e+00 2058 2005 8 3.02825e+01 1.25570e+00 1883 2005 9 2.88054e+01 1.10286e+00 2456 2005 10 2.75678e+01 8.59287e-01 1909 2005 11 2.51422e+01 9.42934e-01 2262 2005 12 2.37373e+01 1.09070e+00 2029 2006 1 2.23157e+01 8.04385e-01 2199 2006 2 2.09503e+01 8.80989e-01 2832 2006 3 2.36496e+01 8.95070e-01 3252 2006 4 2.52207e+01 1.03979e+00 3259 2006 5 2.65206e+01 8.96898e-01 2510 2006 6 2.83019e+01 1.00510e+00 2438 2006 7 2.85409e+01 8.21033e-01 1423 2006 8 2.95481e+01 8.51585e-01 1957 2006 9 3.02249e+01 7.63678e-01 2647 2006 10 2.86238e+01 8.60931e-01 1929 2006 11 2.55452e+01 1.10047e+00 1517 2006 12 2.44475e+01 4.88680e-01 1329 2007 1 2.44496e+01 6.95953e-01 2179 2007 2 2.28825e+01 8.42711e-01 1439 2007 3 2.35424e+01 7.68047e-01 2582 2007 4 2.44399e+01 1.09764e+00 2833 2007 5 2.63183e+01 9.51019e-01 2971 2007 6 2.74618e+01 1.32823e+00 2459 2007 7 3.00135e+01 1.23086e+00 2462 2007 8 2.98432e+01 7.51967e-01 2302 2007 9 2.97278e+01 9.05161e-01 1467 2007 10 2.80856e+01 1.24665e+00 1247 2007 11 2.61249e+01 7.65936e-01 2836 2007 12 2.47394e+01 7.00930e-01 3125 2008 1 2.36171e+01 9.84734e-01 2130 2008 2 2.34454e+01 1.01564e+00 2295 2008 3 2.28770e+01 1.24280e+00 2501 2008 4 2.49539e+01 7.65547e-01 3562 2008 5 2.66515e+01 1.07324e+00 3285 2008 6 2.79593e+01 9.94201e-01 2403 2008 7 2.94786e+01 1.20110e+00 1651 2008 8 2.99130e+01 1.01762e+00 2814 2008 9 2.84620e+01 7.01790e-01 1578 2008 10 2.75365e+01 1.13984e+00 1542 2008 11 2.50005e+01 1.05148e+00 2700 2008 12 2.35707e+01 6.25792e-01 2617 2009 1 2.20371e+01 1.44704e+00 2645 2009 2 2.16146e+01 7.44590e-01 2739 2009 3 2.31785e+01 1.43293e+00 2767 2009 4 2.48238e+01 6.46685e-01 2546 2009 5 2.60653e+01 1.12108e+00 2933 2009 6 2.85893e+01 1.02687e+00 2494 2009 7 2.92565e+01 1.11985e+00 2516 2009 8 2.96630e+01 8.93039e-01 2677 2009 9 2.98975e+01 1.03206e+00 1990 2009 10 2.93293e+01 1.16360e+00 3263 2009 11 2.65278e+01 8.87533e-01 1491 2009 12 2.52513e+01 8.17653e-01 2020 2010 1 2.25421e+01 1.17022e+00 1681 2010 2 2.14419e+01 1.06954e+00 1162 2010 3 2.12357e+01 8.24486e-01 2477 2010 4 2.34962e+01 1.31856e+00 2315 2010 5 2.65706e+01 1.34047e+00 3244 2010 6 2.95753e+01 1.01606e+00 2744 2010 7 2.89961e+01 1.05954e+00 1826 2010 8 2.99846e+01 1.13731e+00 1685 2010 9 2.97365e+01 1.00996e+00 1798 2010 10 2.78352e+01 9.66340e-01 2844 2010 11 2.58945e+01 8.47075e-01 2468 2010 12 2.29399e+01 1.28946e+00 2368 2011 1 2.11543e+01 8.31239e-01 2328 2011 2 1.99473e+01 1.11211e+00 2421 2011 3 2.38161e+01 1.04527e+00 3308 2011 4 2.55115e+01 7.18593e-01 3661 2011 5 2.70890e+01 8.76151e-01 3235 2011 6 2.85203e+01 1.22942e+00 2199 2011 7 2.93022e+01 1.24510e+00 2109 2011 8 3.05927e+01 1.06062e+00 2476 2011 9 2.97976e+01 9.72661e-01 2225 2011 10 2.85061e+01 1.03809e+00 1034 2011 11 2.50194e+01 6.08378e-01 2779 2011 12 2.41295e+01 5.28887e-01 2321 2012 1 2.31217e+01 7.38236e-01 2601 2012 2 2.38912e+01 7.91390e-01 1437 2012 3 2.44035e+01 7.96354e-01 2858 2012 4 2.56353e+01 8.60021e-01 2245 2012 5 2.66951e+01 1.22177e+00 2553 2012 6 2.82876e+01 1.26164e+00 1333 2012 7 2.83780e+01 9.14051e-01 2555 2012 8 2.96388e+01 9.65622e-01 2224 2012 9 2.88520e+01 9.22789e-01 2337 2012 10 2.79029e+01 1.06040e+00 2101 2012 11 2.55496e+01 9.84089e-01 2550 2012 12 2.51709e+01 6.16018e-01 2579 2013 1 2.39869e+01 5.66118e-01 2134 2013 2 2.37342e+01 5.84793e-01 2768 2013 3 2.27153e+01 7.27358e-01 2248 2013 4 2.43099e+01 1.89929e+00 2585 2013 5 2.60786e+01 8.94959e-01 2962 2013 6 2.79584e+01 9.91434e-01 2352 2013 7 2.88302e+01 1.46081e+00 1928 2013 8 2.97195e+01 9.63015e-01 1401 2013 9 2.90498e+01 9.85567e-01 1571 2013 10 2.84551e+01 9.30036e-01 2360 2013 11 2.66800e+01 8.13446e-01 1735 2013 12 2.56301e+01 6.31882e-01 1864 2014 1 2.39172e+01 1.20228e+00 1426 2014 2 2.41294e+01 7.48627e-01 2663 2014 3 2.42631e+01 6.12824e-01 2814 2014 4 2.50688e+01 7.49298e-01 2595 2014 5 2.59338e+01 6.17632e-01 2229 2014 6 2.86667e+01 1.26013e+00 2532 2014 7 2.99604e+01 1.28319e+00 2799 2014 8 3.03992e+01 8.02909e-01 2400 2014 9 2.99795e+01 8.10218e-01 1055 2014 10 2.87564e+01 1.23762e+00 2043 2014 11 2.58763e+01 8.92314e-01 2404 2014 12 2.34709e+01 9.34751e-01 2285 2015 1 2.32955e+01 8.33269e-01 1911 2015 2 2.26694e+01 1.02331e+00 2040 2015 3 2.44360e+01 1.16507e+00 3398 2015 4 2.58026e+01 1.21844e+00 2909 2015 5 2.70553e+01 9.24881e-01 3035 2015 6 2.86139e+01 9.42142e-01 2227 2015 7 3.00189e+01 1.12391e+00 2264 2015 8 3.08007e+01 1.33234e+00 2000 2015 9 2.99681e+01 1.20188e+00 1657 2015 10 2.85973e+01 1.26075e+00 2146 2015 11 2.69985e+01 1.16980e+00 2776 2015 12 2.56948e+01 8.29870e-01 1719 2016 1 2.53031e+01 7.37443e-01 728 2016 2 2.34731e+01 7.57142e-01 2056 2016 3 2.43028e+01 1.16154e+00 1535 2016 4 2.49490e+01 1.07046e+00 2765 2016 5 2.64173e+01 1.35402e+00 3220 2016 6 2.88730e+01 9.92036e-01 2298 2016 7 2.96289e+01 9.53686e-01 2746 2016 8 2.98220e+01 8.84162e-01 2002 2016 9 2.99750e+01 1.04139e+00 2538 2016 10 2.85603e+01 1.26135e+00 1884 2016 11 2.63944e+01 9.70107e-01 3564 2016 12 2.54575e+01 8.45586e-01 2714 2017 1 2.38887e+01 1.04327e+00 2881 2017 2 2.24162e+01 9.52461e-01 2807 2017 3 2.38520e+01 8.32796e-01 3228 2017 4 2.53337e+01 8.09679e-01 2314 2017 5 2.67943e+01 1.04922e+00 2980 2017 6 2.86630e+01 1.09720e+00 1645 2017 7 2.95877e+01 7.92109e-01 2127 2017 8 3.01133e+01 9.09489e-01 2320 2017 9 2.96053e+01 8.24981e-01 1681 2017 10 2.84613e+01 1.23335e+00 1347 2017 11 2.60116e+01 1.03651e+00 2831 2017 12 2.52481e+01 7.62394e-01 3358 2018 1 2.25554e+01 1.84360e+00 1660 2018 2 2.29305e+01 1.88938e+00 3099 2018 3 2.47005e+01 8.16642e-01 3133 2018 4 2.51102e+01 8.30127e-01 2781 2018 5 2.52124e+01 8.18795e-01 1374 2018 6 2.86060e+01 1.15830e+00 2206 2018 7 2.97403e+01 1.15499e+00 2486 2018 8 2.98406e+01 7.79057e-01 2168 2018 9 2.96573e+01 8.69615e-01 2057 2018 10 2.80585e+01 7.37038e-01 2830 2018 11 2.67109e+01 5.95888e-01 1957 2018 12 2.47281e+01 1.27752e+00 2067 2019 1 2.39660e+01 9.45454e-01 1999 2019 2 2.45669e+01 1.44953e+00 2854 2019 3 2.52413e+01 7.88833e-01 3374 2019 4 2.58273e+01 5.86897e-01 2629 2019 5 2.72059e+01 6.87379e-01 3779 2019 6 2.93864e+01 1.12179e+00 2952 2019 7 2.99910e+01 9.35158e-01 1907 2019 8 3.05506e+01 1.26053e+00 1892 2019 9 2.93272e+01 1.16030e+00 2608 2019 10 2.84685e+01 9.00883e-01 2104 2019 11 2.72686e+01 1.20789e+00 2789 2019 12 2.50352e+01 7.60538e-01 2222 2020 1 2.37744e+01 9.85914e-01 2686 2020 2 2.30027e+01 1.32329e+00 2382 2020 3 2.46249e+01 9.94303e-01 3660 2020 4 2.65726e+01 8.44680e-01 2640 2020 5 2.68475e+01 1.14340e+00 1906 2020 6 2.92199e+01 9.84529e-01 1828 2020 7 3.01300e+01 1.07493e+00 2073 2020 8 3.03279e+01 1.05455e+00 2429 2020 9 3.01151e+01 8.94581e-01 2085 2020 10 2.87920e+01 9.90548e-01 1519 2020 11 2.65410e+01 9.67093e-01 2160 2020 12 2.43340e+01 1.09194e+00 2123 2021 1 2.21808e+01 1.02655e+00 1900 2021 2 2.28510e+01 1.43184e+00 3074 2021 3 2.41118e+01 7.22978e-01 3409 2021 4 2.50597e+01 1.08259e+00 3225 2021 5 2.68318e+01 8.36651e-01 2982 2021 6 2.78405e+01 1.09354e+00 1540 2021 7 2.91947e+01 1.08887e+00 2898 2021 8 3.01427e+01 1.18755e+00 1992 2021 9 3.00647e+01 8.50831e-01 2137 2021 10 2.90019e+01 9.11413e-01 2218 2021 11 2.63568e+01 1.01829e+00 1290 2021 12 2.53116e+01 5.81439e-01 2934 2022 1 2.42831e+01 7.58291e-01 1917 2022 2 2.37720e+01 1.04599e+00 2674 2022 3 2.51475e+01 6.28150e-01 3333 2022 4 2.53932e+01 8.44379e-01 1954 2022 5 2.69527e+01 9.91076e-01 2954 2022 6 2.88717e+01 1.25131e+00 2484 2022 7 2.99364e+01 6.04501e-01 2267 2022 8 3.05771e+01 8.52771e-01 1997 2022 9 3.07056e+01 8.80446e-01 2039 2022 10 2.79100e+01 7.14192e-01 2725 2022 11 2.68878e+01 5.65909e-01 2555 2022 12 2.58818e+01 8.23658e-01 2912 2023 1 2.32783e+01 9.31643e-01 3119 2023 2 2.46994e+01 5.78583e-01 3358 2023 3 2.53468e+01 6.76773e-01 3393 2023 4 2.63395e+01 1.02914e+00 2843 2023 5 2.76832e+01 1.03450e+00 3614 2023 6 2.89793e+01 1.05572e+00 2870 2023 7 3.07789e+01 9.88608e-01 2769 2023 8 3.10353e+01 1.23203e+00 2042 2023 9 3.05932e+01 9.99038e-01 2667 2023 10 2.89589e+01 1.30208e+00 2208 2023 11 2.72038e+01 7.16700e-01 2077 2023 12 2.53896e+01 1.24798e+00 1340 2024 1 2.42454e+01 8.07848e-01 1179 2024 2 2.27759e+01 5.72633e-01 2474 2024 3 2.40465e+01 1.24911e+00 2076 2024 4 2.48620e+01 3.83657e-01 233