YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.40020e+01 5.80666e-01 134 2000 3 2.46971e+01 4.28246e-01 702 2000 4 2.53728e+01 4.93576e-01 669 2000 5 2.70336e+01 1.04429e+00 304 2000 6 2.74994e+01 1.28702e+00 437 2000 7 2.96263e+01 8.04415e-01 591 2000 8 2.91070e+01 9.73168e-01 330 2000 9 2.94629e+01 1.16424e+00 222 2000 10 2.72823e+01 1.21704e+00 410 2000 11 2.52830e+01 7.36866e-01 435 2000 12 2.39362e+01 5.28640e-01 319 2001 1 2.21648e+01 8.20606e-01 456 2001 2 2.34906e+01 8.15848e-01 692 2001 3 2.38836e+01 7.58487e-01 722 2001 4 2.55152e+01 7.85526e-01 700 2001 5 2.55373e+01 1.34117e+00 567 2001 6 2.82329e+01 9.94557e-01 353 2001 7 2.79643e+01 1.39635e+00 506 2001 8 2.92638e+01 1.30327e+00 717 2001 9 2.90214e+01 1.00098e+00 191 2001 10 2.73863e+01 8.95730e-01 233 2001 11 2.53787e+01 8.52195e-01 462 2001 12 2.48582e+01 5.27694e-01 524 2002 1 2.30642e+01 5.74959e-01 557 2002 2 2.33965e+01 8.33946e-01 187 2002 3 2.45020e+01 1.07446e+00 640 2002 4 2.65308e+01 1.23337e+00 552 2002 5 2.74188e+01 7.96480e-01 493 2002 6 2.78976e+01 1.77701e+00 128 2002 7 2.91415e+01 1.06539e+00 2087 2002 8 2.95743e+01 1.10295e+00 1814 2002 9 2.89095e+01 8.07048e-01 1924 2002 10 2.82551e+01 6.86913e-01 3405 2002 11 2.64989e+01 1.40706e+00 2213 2002 12 2.40970e+01 8.84900e-01 1602 2003 1 2.20035e+01 1.20781e+00 1763 2003 2 2.26473e+01 1.03169e+00 2709 2003 3 2.52602e+01 6.91558e-01 2481 2003 4 2.48430e+01 1.18933e+00 2271 2003 5 2.76463e+01 9.98853e-01 2886 2003 6 2.82995e+01 8.17686e-01 1253 2003 7 2.87167e+01 1.04814e+00 1705 2003 8 2.98535e+01 7.10220e-01 1661 2003 9 2.93451e+01 6.10283e-01 1661 2003 10 2.82859e+01 9.85257e-01 2386 2003 11 2.62621e+01 6.94043e-01 1601 2003 12 2.31241e+01 1.40192e+00 1383 2004 1 2.33103e+01 9.26618e-01 2653 2004 2 2.36895e+01 7.57455e-01 1727 2004 3 2.40832e+01 1.01467e+00 2142 2004 4 2.42078e+01 9.64089e-01 2509 2004 5 2.62573e+01 1.06388e+00 3229 2004 6 2.87657e+01 1.04127e+00 2572 2004 7 2.96972e+01 8.17060e-01 1965 2004 8 2.99099e+01 1.26108e+00 1512 2004 9 2.87722e+01 1.03681e+00 1968 2004 10 2.74558e+01 9.09307e-01 2415 2004 11 2.59350e+01 8.50422e-01 1668 2004 12 2.43305e+01 1.11284e+00 1168 2005 1 2.29499e+01 1.06991e+00 2245 2005 2 2.27619e+01 8.51052e-01 2096 2005 3 2.32673e+01 1.32348e+00 2440 2005 4 2.40030e+01 7.18019e-01 3015 2005 5 2.61261e+01 1.45278e+00 2528 2005 6 2.83593e+01 1.02992e+00 1513 2005 7 2.93089e+01 8.78801e-01 2608 2005 8 3.01829e+01 1.17528e+00 2506 2005 9 2.92022e+01 1.06030e+00 2319 2005 10 2.73325e+01 1.47206e+00 1583 2005 11 2.52249e+01 7.79476e-01 2706 2005 12 2.34734e+01 1.02314e+00 2207 2006 1 2.26541e+01 8.13717e-01 1803 2006 2 2.26050e+01 8.64793e-01 2441 2006 3 2.40071e+01 1.09878e+00 3022 2006 4 2.57233e+01 1.03524e+00 3043 2006 5 2.68975e+01 1.09174e+00 2824 2006 6 2.84750e+01 7.61990e-01 2418 2006 7 2.89500e+01 1.02848e+00 1696 2006 8 2.95789e+01 1.07989e+00 2077 2006 9 2.96926e+01 9.95850e-01 2435 2006 10 2.81543e+01 1.14584e+00 2452 2006 11 2.54017e+01 1.18891e+00 1862 2006 12 2.41613e+01 1.14475e+00 954 2007 1 2.39309e+01 1.06748e+00 2219 2007 2 2.29563e+01 1.06218e+00 1523 2007 3 2.37300e+01 6.58596e-01 1520 2007 4 2.47092e+01 9.54513e-01 3112 2007 5 2.65292e+01 1.02743e+00 2638 2007 6 2.78957e+01 1.25151e+00 1828 2007 7 3.01318e+01 7.91276e-01 2716 2007 8 3.00473e+01 1.00416e+00 2639 2007 9 2.97833e+01 7.59496e-01 1715 2007 10 2.79481e+01 8.52888e-01 1526 2007 11 2.59172e+01 7.41564e-01 2357 2007 12 2.46050e+01 9.85117e-01 1936 2008 1 2.34069e+01 7.68477e-01 1736 2008 2 2.37991e+01 8.06808e-01 2273 2008 3 2.34875e+01 9.40826e-01 2295 2008 4 2.53054e+01 9.15022e-01 3166 2008 5 2.70640e+01 1.19761e+00 3257 2008 6 2.84792e+01 7.02524e-01 2127 2008 7 2.93687e+01 1.06334e+00 2589 2008 8 2.98011e+01 8.52563e-01 2336 2008 9 2.84126e+01 8.56790e-01 1747 2008 10 2.76830e+01 1.03879e+00 1498 2008 11 2.49957e+01 9.53042e-01 2003 2008 12 2.32777e+01 8.67515e-01 2012 2009 1 2.24788e+01 1.13930e+00 2554 2009 2 2.25814e+01 1.03209e+00 2244 2009 3 2.33662e+01 8.59653e-01 2060 2009 4 2.47784e+01 6.40924e-01 3193 2009 5 2.67400e+01 1.05603e+00 2787 2009 6 2.90626e+01 1.17709e+00 2037 2009 7 2.93734e+01 8.66569e-01 2138 2009 8 2.99912e+01 5.95153e-01 2429 2009 9 2.98076e+01 8.78651e-01 1958 2009 10 2.91151e+01 1.17496e+00 2885 2009 11 2.67809e+01 1.08751e+00 1638 2009 12 2.49512e+01 1.27210e+00 1789 2010 1 2.26074e+01 1.18732e+00 1487 2010 2 2.21525e+01 1.22900e+00 1457 2010 3 2.10790e+01 7.75708e-01 1973 2010 4 2.41120e+01 1.12497e+00 2316 2010 5 2.75944e+01 1.22018e+00 3011 2010 6 2.96041e+01 1.16638e+00 2810 2010 7 2.91892e+01 1.10028e+00 1632 2010 8 3.01807e+01 1.04311e+00 1968 2010 9 2.93230e+01 1.02578e+00 2714 2010 10 2.74470e+01 9.09478e-01 2631 2010 11 2.57671e+01 1.21348e+00 2039 2010 12 2.31205e+01 1.42827e+00 1991 2011 1 2.15790e+01 1.30762e+00 1926 2011 2 2.23103e+01 8.23470e-01 2900 2011 3 2.40836e+01 9.19628e-01 2976 2011 4 2.60019e+01 7.70373e-01 3729 2011 5 2.71413e+01 7.60421e-01 3334 2011 6 2.85211e+01 1.39598e+00 1745 2011 7 2.95314e+01 9.83926e-01 2252 2011 8 3.01520e+01 7.62451e-01 1852 2011 9 3.01245e+01 9.06190e-01 2486 2011 10 2.77090e+01 1.80496e+00 1127 2011 11 2.51096e+01 8.36187e-01 2447 2011 12 2.41251e+01 8.14425e-01 2177 2012 1 2.27667e+01 7.71899e-01 1898 2012 2 2.39124e+01 6.44790e-01 1600 2012 3 2.45978e+01 8.09286e-01 2880 2012 4 2.53086e+01 1.06559e+00 2410 2012 5 2.63528e+01 1.13262e+00 2028 2012 6 2.82832e+01 9.90176e-01 1728 2012 7 2.89560e+01 7.55732e-01 2435 2012 8 2.95234e+01 9.68178e-01 2014 2012 9 2.91305e+01 1.08783e+00 2145 2012 10 2.76073e+01 1.34874e+00 1923 2012 11 2.58838e+01 1.14479e+00 1535 2012 12 2.48031e+01 1.02882e+00 2564 2013 1 2.39451e+01 5.35205e-01 2006 2013 2 2.37360e+01 8.60863e-01 2448 2013 3 2.34224e+01 9.81621e-01 2167 2013 4 2.51559e+01 1.17284e+00 2444 2013 5 2.68375e+01 6.87660e-01 2580 2013 6 2.81021e+01 1.06771e+00 1670 2013 7 2.86459e+01 1.39978e+00 1521 2013 8 2.92681e+01 9.16271e-01 2006 2013 9 2.92873e+01 7.30670e-01 1443 2013 10 2.82756e+01 8.67669e-01 2558 2013 11 2.63745e+01 9.70733e-01 1572 2013 12 2.52176e+01 9.26941e-01 1988 2014 1 2.43119e+01 9.17663e-01 1765 2014 2 2.46314e+01 9.44866e-01 2843 2014 3 2.45887e+01 7.26721e-01 2956 2014 4 2.57692e+01 1.07922e+00 2606 2014 5 2.66778e+01 7.69277e-01 2105 2014 6 2.86836e+01 1.30288e+00 1959 2014 7 2.97625e+01 1.05703e+00 2004 2014 8 3.07338e+01 8.02458e-01 3167 2014 9 2.98163e+01 9.00389e-01 1442 2014 10 2.81491e+01 1.25569e+00 2611 2014 11 2.54367e+01 1.06514e+00 2359 2014 12 2.43189e+01 7.16887e-01 1879 2015 1 2.42379e+01 1.05936e+00 1688 2015 2 2.32710e+01 1.01199e+00 1990 2015 3 2.49893e+01 9.23963e-01 3156 2015 4 2.63894e+01 1.30070e+00 2627 2015 5 2.73221e+01 9.66224e-01 2951 2015 6 2.90667e+01 1.01188e+00 2081 2015 7 2.98906e+01 9.70321e-01 2422 2015 8 3.04830e+01 1.11082e+00 2098 2015 9 3.01340e+01 1.15657e+00 1610 2015 10 2.85826e+01 1.12937e+00 2397 2015 11 2.75570e+01 1.07144e+00 2615 2015 12 2.54774e+01 5.85081e-01 1399 2016 1 2.53354e+01 1.18163e+00 881 2016 2 2.40724e+01 1.03343e+00 1710 2016 3 2.41993e+01 1.29833e+00 1342 2016 4 2.56702e+01 7.37922e-01 2568 2016 5 2.74324e+01 1.37431e+00 3097 2016 6 2.90737e+01 8.87767e-01 2097 2016 7 2.97708e+01 7.42032e-01 2727 2016 8 3.01619e+01 9.22735e-01 2018 2016 9 2.98704e+01 1.07548e+00 2699 2016 10 2.82533e+01 1.17815e+00 1670 2016 11 2.63908e+01 1.00927e+00 1816 2016 12 2.52765e+01 9.09278e-01 2221 2017 1 2.39944e+01 9.14417e-01 2190 2017 2 2.38322e+01 6.36806e-01 2871 2017 3 2.42312e+01 9.22347e-01 2185 2017 4 2.55034e+01 9.51823e-01 1643 2017 5 2.67176e+01 1.10473e+00 2974 2017 6 2.88266e+01 9.75947e-01 1388 2017 7 2.99497e+01 6.76229e-01 2524 2017 8 3.03190e+01 9.16519e-01 2790 2017 9 2.98335e+01 8.19170e-01 2557 2017 10 2.80423e+01 9.25203e-01 1696 2017 11 2.61897e+01 7.57781e-01 2890 2017 12 2.48829e+01 1.13760e+00 2821 2018 1 2.27497e+01 1.31030e+00 1358 2018 2 2.41909e+01 1.07895e+00 2525 2018 3 2.47572e+01 9.03434e-01 3034 2018 4 2.56225e+01 8.69176e-01 2992 2018 5 2.56503e+01 1.08448e+00 896 2018 6 2.89268e+01 9.99516e-01 1655 2018 7 3.03349e+01 9.52839e-01 1891 2018 8 3.01100e+01 8.40958e-01 2769 2018 9 2.98249e+01 9.26466e-01 2601 2018 10 2.82346e+01 8.94062e-01 2785 2018 11 2.69285e+01 9.67053e-01 2127 2018 12 2.41115e+01 1.34920e+00 2073 2019 1 2.38981e+01 1.27254e+00 2519 2019 2 2.49826e+01 9.81026e-01 2702 2019 3 2.55873e+01 9.95442e-01 2993 2019 4 2.60230e+01 6.69606e-01 2879 2019 5 2.73976e+01 1.06296e+00 2786 2019 6 2.98492e+01 1.03561e+00 2271 2019 7 3.03058e+01 1.05064e+00 2421 2019 8 3.02713e+01 1.07041e+00 1889 2019 9 2.91574e+01 1.18077e+00 1961 2019 10 2.83597e+01 7.98482e-01 2683 2019 11 2.72227e+01 1.26020e+00 2482 2019 12 2.48690e+01 9.69207e-01 2169 2020 1 2.43991e+01 7.84993e-01 2490 2020 2 2.45765e+01 1.13129e+00 1978 2020 3 2.50684e+01 8.90060e-01 3370 2020 4 2.68701e+01 7.01322e-01 2069 2020 5 2.72160e+01 1.00736e+00 2046 2020 6 2.93399e+01 1.01418e+00 1803 2020 7 2.99328e+01 8.54687e-01 2054 2020 8 3.04899e+01 9.91191e-01 2430 2020 9 2.99017e+01 1.02596e+00 1939 2020 10 2.86620e+01 1.24425e+00 1972 2020 11 2.66103e+01 1.07593e+00 1516 2020 12 2.46066e+01 1.11870e+00 2003 2021 1 2.31932e+01 1.18996e+00 2397 2021 2 2.37201e+01 1.12212e+00 2977 2021 3 2.46879e+01 8.07554e-01 3129 2021 4 2.55944e+01 9.63154e-01 2680 2021 5 2.71750e+01 1.07254e+00 3056 2021 6 2.77684e+01 1.04024e+00 1212 2021 7 2.92838e+01 1.02370e+00 2575 2021 8 3.01386e+01 9.48364e-01 2394 2021 9 3.02182e+01 9.27437e-01 2333 2021 10 2.86444e+01 9.82211e-01 2171 2021 11 2.58916e+01 1.03463e+00 1889 2021 12 2.51665e+01 8.66755e-01 3281 2022 1 2.42672e+01 1.04363e+00 2117 2022 2 2.39290e+01 7.89675e-01 2430 2022 3 2.53324e+01 7.53915e-01 3190 2022 4 2.59746e+01 6.97972e-01 1375 2022 5 2.75147e+01 8.99545e-01 2958 2022 6 2.89306e+01 1.22838e+00 2415 2022 7 2.96058e+01 8.59888e-01 2845 2022 8 3.01405e+01 1.01244e+00 2597 2022 9 3.07274e+01 1.13219e+00 2316 2022 10 2.76885e+01 1.04302e+00 2147 2022 11 2.70231e+01 5.50442e-01 2405 2022 12 2.55981e+01 9.38948e-01 2205 2023 1 2.45670e+01 7.74128e-01 2988 2023 2 2.48543e+01 8.38193e-01 2892 2023 3 2.54823e+01 8.77285e-01 3156 2023 4 2.66792e+01 8.58064e-01 2455 2023 5 2.77863e+01 1.02198e+00 2607 2023 6 2.93843e+01 8.12505e-01 1767 2023 7 3.09898e+01 1.07890e+00 2270 2023 8 3.08609e+01 9.54058e-01 2220 2023 9 3.06077e+01 8.34100e-01 2101 2023 10 2.87335e+01 1.46506e+00 2227 2023 11 2.68440e+01 8.79105e-01 2067 2023 12 2.53471e+01 1.04448e+00 1099 2024 1 2.40379e+01 1.32242e+00 1493 2024 2 2.32218e+01 7.93287e-01 2402 2024 3 2.49522e+01 6.79026e-01 2067 2024 4 2.46644e+01 7.32878e-01 165