YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.39181e+01 8.56334e-01 118 2000 3 2.48657e+01 3.20472e-01 672 2000 4 2.50772e+01 5.29184e-01 741 2000 5 2.63428e+01 1.12975e+00 648 2000 6 2.75834e+01 1.68416e+00 162 2000 7 2.97503e+01 8.40145e-01 661 2000 8 2.85194e+01 1.70236e+00 250 2000 9 2.95435e+01 9.57821e-01 486 2000 10 2.72768e+01 1.09204e+00 573 2000 11 2.60724e+01 1.03488e+00 714 2000 12 2.43913e+01 1.05002e+00 464 2001 1 2.34634e+01 1.12850e+00 619 2001 2 2.35853e+01 8.16354e-01 775 2001 3 2.39525e+01 6.92591e-01 768 2001 4 2.50968e+01 5.07181e-01 647 2001 5 2.61686e+01 7.51053e-01 448 2001 6 2.73868e+01 1.56754e+00 320 2001 7 2.81116e+01 9.46585e-01 331 2001 8 2.87763e+01 8.57096e-01 672 2001 9 2.84902e+01 1.03456e+00 263 2001 10 2.68968e+01 1.70468e+00 398 2001 11 2.59021e+01 1.01010e+00 409 2001 12 2.52493e+01 5.39807e-01 596 2002 1 2.35081e+01 8.01550e-01 764 2002 2 2.37943e+01 3.84396e-01 354 2002 3 2.44569e+01 1.07835e+00 428 2002 4 2.67100e+01 6.75008e-01 566 2002 5 2.70041e+01 7.43221e-01 560 2002 6 2.85210e+01 1.22834e-01 102 2002 7 2.89273e+01 1.20428e+00 2027 2002 8 2.93902e+01 1.03788e+00 1928 2002 9 2.87568e+01 6.80880e-01 1760 2002 10 2.79438e+01 7.62859e-01 3198 2002 11 2.69493e+01 1.12911e+00 2442 2002 12 2.48941e+01 9.41299e-01 1805 2003 1 2.30139e+01 1.03899e+00 2280 2003 2 2.26973e+01 1.11955e+00 2225 2003 3 2.52978e+01 9.09675e-01 2668 2003 4 2.51656e+01 1.22173e+00 2689 2003 5 2.72978e+01 1.05152e+00 2465 2003 6 2.82092e+01 8.78714e-01 1091 2003 7 2.87421e+01 8.87095e-01 1936 2003 8 2.95129e+01 1.01488e+00 2329 2003 9 2.92051e+01 8.32612e-01 1763 2003 10 2.85215e+01 1.04865e+00 2779 2003 11 2.69212e+01 6.61059e-01 1686 2003 12 2.47668e+01 1.08125e+00 1743 2004 1 2.45930e+01 8.34976e-01 2427 2004 2 2.38256e+01 1.00768e+00 2317 2004 3 2.45508e+01 1.07985e+00 2412 2004 4 2.45957e+01 8.33851e-01 2471 2004 5 2.61643e+01 1.05658e+00 3019 2004 6 2.87387e+01 8.05173e-01 2520 2004 7 2.93332e+01 1.00885e+00 2369 2004 8 2.98728e+01 1.11352e+00 2092 2004 9 2.88377e+01 1.35487e+00 1825 2004 10 2.79200e+01 7.72832e-01 2251 2004 11 2.66845e+01 9.74729e-01 2006 2004 12 2.51428e+01 1.42854e+00 1627 2005 1 2.40403e+01 7.62710e-01 2737 2005 2 2.34846e+01 8.99989e-01 1853 2005 3 2.36715e+01 7.87818e-01 2382 2005 4 2.41822e+01 7.32390e-01 2868 2005 5 2.60899e+01 1.38203e+00 2743 2005 6 2.81037e+01 1.08944e+00 1350 2005 7 2.90204e+01 9.01674e-01 2503 2005 8 2.99629e+01 1.24650e+00 2667 2005 9 2.90781e+01 1.01763e+00 2425 2005 10 2.78790e+01 1.00848e+00 1280 2005 11 2.58153e+01 8.18962e-01 2680 2005 12 2.41016e+01 1.17536e+00 2700 2006 1 2.31476e+01 9.18102e-01 1800 2006 2 2.32385e+01 9.10563e-01 2509 2006 3 2.45602e+01 1.16416e+00 3009 2006 4 2.59142e+01 8.87897e-01 3235 2006 5 2.70117e+01 8.66261e-01 2515 2006 6 2.83925e+01 7.55496e-01 2310 2006 7 2.90532e+01 7.85668e-01 1565 2006 8 2.98327e+01 8.17320e-01 2191 2006 9 3.00415e+01 8.79468e-01 2209 2006 10 2.86596e+01 9.86208e-01 2314 2006 11 2.63819e+01 1.10324e+00 1953 2006 12 2.51385e+01 1.03845e+00 876 2007 1 2.48520e+01 9.30277e-01 2410 2007 2 2.38090e+01 1.01289e+00 1571 2007 3 2.42849e+01 6.82843e-01 2023 2007 4 2.49912e+01 1.04029e+00 3199 2007 5 2.69529e+01 1.07285e+00 2748 2007 6 2.79321e+01 1.53385e+00 1744 2007 7 2.97660e+01 9.86843e-01 2491 2007 8 2.95764e+01 1.08726e+00 2555 2007 9 2.94793e+01 1.05455e+00 2211 2007 10 2.77954e+01 1.18566e+00 1341 2007 11 2.65953e+01 8.79034e-01 2750 2007 12 2.53721e+01 8.04644e-01 2206 2008 1 2.42345e+01 8.95223e-01 2049 2008 2 2.40471e+01 1.09440e+00 2557 2008 3 2.39978e+01 7.83462e-01 2102 2008 4 2.55764e+01 7.78414e-01 3342 2008 5 2.68161e+01 1.06879e+00 3330 2008 6 2.81155e+01 9.20283e-01 2262 2008 7 2.86021e+01 9.84690e-01 2328 2008 8 2.96511e+01 1.07223e+00 2315 2008 9 2.83607e+01 8.19288e-01 2217 2008 10 2.79563e+01 1.01248e+00 1387 2008 11 2.56952e+01 6.41917e-01 2366 2008 12 2.40872e+01 1.04287e+00 2138 2009 1 2.30023e+01 1.06333e+00 2804 2009 2 2.28173e+01 8.19149e-01 2324 2009 3 2.37584e+01 8.96310e-01 2225 2009 4 2.48168e+01 7.20827e-01 2977 2009 5 2.66044e+01 1.15796e+00 3194 2009 6 2.89668e+01 1.13371e+00 2117 2009 7 2.93050e+01 1.03746e+00 2645 2009 8 2.96297e+01 7.54339e-01 2497 2009 9 3.00272e+01 7.51447e-01 1829 2009 10 2.90913e+01 1.33127e+00 2756 2009 11 2.72277e+01 1.17746e+00 2024 2009 12 2.55586e+01 1.00251e+00 2237 2010 1 2.39407e+01 1.34309e+00 1767 2010 2 2.29408e+01 8.50847e-01 1523 2010 3 2.18916e+01 8.90026e-01 2405 2010 4 2.42131e+01 1.16767e+00 2001 2010 5 2.72479e+01 1.22296e+00 3031 2010 6 2.96005e+01 9.09305e-01 2938 2010 7 2.89725e+01 1.06708e+00 1542 2010 8 3.01613e+01 9.97010e-01 2160 2010 9 2.93417e+01 9.99214e-01 2008 2010 10 2.78452e+01 9.56237e-01 2622 2010 11 2.65108e+01 1.11277e+00 2408 2010 12 2.44547e+01 1.39339e+00 3499 2011 1 2.23552e+01 1.20302e+00 2412 2011 2 2.22578e+01 7.59524e-01 3054 2011 3 2.41987e+01 8.52826e-01 3097 2011 4 2.58418e+01 8.16336e-01 3536 2011 5 2.70270e+01 8.63414e-01 3614 2011 6 2.83152e+01 1.16456e+00 2153 2011 7 2.95891e+01 1.12496e+00 2082 2011 8 2.99630e+01 1.16660e+00 1923 2011 9 2.99229e+01 1.04148e+00 2112 2011 10 2.83086e+01 1.16179e+00 1198 2011 11 2.58940e+01 6.79114e-01 2191 2011 12 2.47878e+01 9.36257e-01 2289 2012 1 2.35763e+01 7.49415e-01 2144 2012 2 2.43398e+01 8.86922e-01 1735 2012 3 2.48112e+01 7.85635e-01 2917 2012 4 2.58558e+01 8.87731e-01 2436 2012 5 2.64033e+01 1.08163e+00 1857 2012 6 2.80103e+01 1.43444e+00 1547 2012 7 2.85281e+01 1.15934e+00 2647 2012 8 2.93267e+01 1.35432e+00 2227 2012 9 2.90827e+01 8.30931e-01 1738 2012 10 2.80756e+01 8.06898e-01 2236 2012 11 2.70784e+01 9.54694e-01 2339 2012 12 2.56120e+01 9.35755e-01 2121 2013 1 2.44770e+01 6.20014e-01 2033 2013 2 2.44541e+01 8.47429e-01 2433 2013 3 2.40329e+01 9.32375e-01 2337 2013 4 2.53502e+01 1.22217e+00 2693 2013 5 2.66401e+01 6.74225e-01 2755 2013 6 2.80077e+01 7.80993e-01 1535 2013 7 2.88897e+01 1.05055e+00 1900 2013 8 2.92795e+01 7.79582e-01 1870 2013 9 2.92924e+01 7.27240e-01 1583 2013 10 2.85615e+01 8.75404e-01 2720 2013 11 2.72858e+01 8.74938e-01 1289 2013 12 2.58704e+01 1.01765e+00 2018 2014 1 2.51586e+01 9.58529e-01 2002 2014 2 2.51323e+01 9.72661e-01 3015 2014 3 2.46982e+01 8.69262e-01 2777 2014 4 2.57656e+01 1.20448e+00 2835 2014 5 2.66134e+01 8.48759e-01 1775 2014 6 2.85414e+01 1.27201e+00 1996 2014 7 2.96273e+01 7.55390e-01 2437 2014 8 3.05419e+01 7.80025e-01 3324 2014 9 2.96424e+01 1.03324e+00 1489 2014 10 2.85344e+01 1.26730e+00 2364 2014 11 2.64549e+01 7.25103e-01 2628 2014 12 2.53867e+01 8.99011e-01 2313 2015 1 2.50053e+01 7.72278e-01 2382 2015 2 2.38683e+01 7.93430e-01 2379 2015 3 2.47223e+01 9.00287e-01 3289 2015 4 2.62391e+01 1.36335e+00 2538 2015 5 2.73047e+01 8.44752e-01 3009 2015 6 2.86450e+01 1.08399e+00 1935 2015 7 2.93642e+01 1.42836e+00 2093 2015 8 3.03390e+01 1.14307e+00 2343 2015 9 3.05157e+01 9.71536e-01 1439 2015 10 2.85886e+01 1.03790e+00 2373 2015 11 2.75674e+01 1.00155e+00 2580 2015 12 2.59287e+01 8.83323e-01 1867 2016 1 2.56044e+01 1.33473e+00 1237 2016 2 2.47770e+01 9.22136e-01 1792 2016 3 2.50664e+01 1.33745e+00 1434 2016 4 2.60056e+01 1.02337e+00 2687 2016 5 2.75795e+01 1.08665e+00 3304 2016 6 2.89203e+01 7.39053e-01 2065 2016 7 2.95563e+01 6.94324e-01 2841 2016 8 2.99119e+01 8.53714e-01 2070 2016 9 2.96555e+01 9.84578e-01 2036 2016 10 2.89427e+01 7.74125e-01 1732 2016 11 2.69704e+01 1.08159e+00 1947 2016 12 2.59266e+01 9.31355e-01 2432 2017 1 2.47581e+01 9.56450e-01 1931 2017 2 2.43564e+01 7.28333e-01 2752 2017 3 2.49602e+01 9.87652e-01 2515 2017 4 2.56867e+01 6.81219e-01 1894 2017 5 2.69681e+01 1.41614e+00 2872 2017 6 2.86062e+01 9.49729e-01 1455 2017 7 2.95543e+01 7.96659e-01 2174 2017 8 2.99914e+01 8.62386e-01 2322 2017 9 2.98168e+01 1.08435e+00 2617 2017 10 2.84765e+01 7.60014e-01 2097 2017 11 2.66451e+01 6.16976e-01 2970 2017 12 2.58802e+01 1.07227e+00 3529 2018 1 2.42910e+01 1.05002e+00 1555 2018 2 2.43853e+01 1.08250e+00 2773 2018 3 2.52040e+01 9.14940e-01 3506 2018 4 2.57144e+01 8.31950e-01 3080 2018 5 2.57458e+01 1.21240e+00 732 2018 6 2.86064e+01 1.04082e+00 1747 2018 7 3.02114e+01 1.23566e+00 1742 2018 8 2.97892e+01 8.92061e-01 3153 2018 9 2.95765e+01 8.73486e-01 2499 2018 10 2.82018e+01 8.50965e-01 2793 2018 11 2.69568e+01 7.29228e-01 2416 2018 12 2.57050e+01 1.57719e+00 1992 2019 1 2.48543e+01 1.15249e+00 2290 2019 2 2.50798e+01 1.01331e+00 2964 2019 3 2.59778e+01 7.86831e-01 2992 2019 4 2.60981e+01 5.75134e-01 2965 2019 5 2.73214e+01 9.53903e-01 3103 2019 6 2.96384e+01 1.22745e+00 2338 2019 7 2.98642e+01 1.12176e+00 2423 2019 8 3.01537e+01 9.98064e-01 1920 2019 9 2.93064e+01 1.13073e+00 2225 2019 10 2.84765e+01 9.43594e-01 2665 2019 11 2.77314e+01 9.47254e-01 2571 2019 12 2.54283e+01 1.05368e+00 2369 2020 1 2.51696e+01 8.22123e-01 2866 2020 2 2.52129e+01 1.20062e+00 1821 2020 3 2.50059e+01 8.16568e-01 3108 2020 4 2.66111e+01 9.16752e-01 2583 2020 5 2.73122e+01 1.35081e+00 2037 2020 6 2.90466e+01 8.37826e-01 1616 2020 7 2.96166e+01 1.06598e+00 1917 2020 8 3.01368e+01 8.60758e-01 2142 2020 9 2.99896e+01 7.82393e-01 1794 2020 10 2.88037e+01 1.20805e+00 1842 2020 11 2.69821e+01 9.19793e-01 1823 2020 12 2.57044e+01 1.27340e+00 2339 2021 1 2.40497e+01 9.24250e-01 2402 2021 2 2.43121e+01 1.01822e+00 2459 2021 3 2.49161e+01 7.72340e-01 3069 2021 4 2.58067e+01 9.09014e-01 2539 2021 5 2.72542e+01 1.07773e+00 2521 2021 6 2.76897e+01 1.08926e+00 1144 2021 7 2.91929e+01 1.12117e+00 2701 2021 8 2.97509e+01 9.79760e-01 2055 2021 9 2.99591e+01 1.16468e+00 2644 2021 10 2.90044e+01 8.85051e-01 2238 2021 11 2.67707e+01 8.49221e-01 2072 2021 12 2.60918e+01 9.63635e-01 3322 2022 1 2.51733e+01 7.87541e-01 2347 2022 2 2.45566e+01 9.22994e-01 2687 2022 3 2.56807e+01 6.94541e-01 2872 2022 4 2.61261e+01 6.79050e-01 1295 2022 5 2.73593e+01 1.01096e+00 3034 2022 6 2.89932e+01 9.69173e-01 2117 2022 7 2.96518e+01 7.43789e-01 2362 2022 8 3.01151e+01 8.66406e-01 2266 2022 9 3.05405e+01 1.05104e+00 2395 2022 10 2.80409e+01 8.47217e-01 2126 2022 11 2.73088e+01 6.54426e-01 2284 2022 12 2.62748e+01 8.21204e-01 2102 2023 1 2.51791e+01 8.07013e-01 3006 2023 2 2.51370e+01 8.97320e-01 3034 2023 3 2.54347e+01 6.52204e-01 3022 2023 4 2.66233e+01 7.54239e-01 2677 2023 5 2.77167e+01 1.04491e+00 2255 2023 6 2.95226e+01 1.04332e+00 1740 2023 7 3.08235e+01 9.35021e-01 2297 2023 8 3.10366e+01 7.53158e-01 2198 2023 9 3.05756e+01 9.88375e-01 1949 2023 10 2.93400e+01 1.13511e+00 2542 2023 11 2.75639e+01 7.86530e-01 2201 2023 12 2.60349e+01 9.67453e-01 1274 2024 1 2.51637e+01 8.44165e-01 1318 2024 2 2.40430e+01 7.09391e-01 2206 2024 3 2.49919e+01 1.08381e+00 2093 2024 4 2.16929e+01 9.45613e-02 14