YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.54654e+01 5.13042e-01 224 2000 3 2.53376e+01 1.43574e+00 494 2000 4 2.52841e+01 5.63173e-01 427 2000 5 2.63539e+01 7.38038e-01 451 2000 6 2.61429e+01 5.78026e-01 227 2000 7 2.72073e+01 1.43463e+00 216 2000 8 2.79879e+01 7.34386e-01 311 2000 9 2.86638e+01 6.19634e-01 404 2000 10 2.89806e+01 6.31361e-01 678 2000 11 2.83202e+01 4.97054e-01 803 2000 12 2.72844e+01 4.60853e-01 666 2001 1 2.65981e+01 4.42861e-01 510 2001 2 2.58199e+01 5.15100e-01 508 2001 3 2.57159e+01 3.36431e-01 555 2001 4 2.56629e+01 9.03305e-01 487 2001 5 2.65179e+01 7.07513e-01 404 2001 6 2.74074e+01 4.14703e-01 159 2001 7 2.77822e+01 7.27726e-01 532 2001 8 2.79751e+01 9.95380e-01 478 2001 9 2.85970e+01 6.57421e-01 626 2001 10 2.83205e+01 1.02577e+00 484 2001 11 2.80133e+01 7.70672e-01 354 2001 12 2.67772e+01 5.55906e-01 292 2002 1 2.62160e+01 6.03844e-01 708 2002 2 2.57946e+01 4.73227e-01 494 2002 3 2.60193e+01 6.35958e-01 430 2002 4 2.61536e+01 2.53154e-01 255 2002 5 2.67395e+01 8.52366e-01 626 2002 6 2.65961e+01 8.40211e-01 255 2002 7 2.71559e+01 7.40975e-01 1931 2002 8 2.82066e+01 7.23829e-01 1192 2002 9 2.85221e+01 5.56452e-01 1788 2002 10 2.88449e+01 7.25053e-01 2302 2002 11 2.84421e+01 6.50809e-01 3113 2002 12 2.73337e+01 6.25075e-01 2358 2003 1 2.68590e+01 5.47918e-01 2497 2003 2 2.63856e+01 5.54156e-01 2298 2003 3 2.64535e+01 6.24394e-01 2678 2003 4 2.68038e+01 8.32243e-01 1407 2003 5 2.68139e+01 7.47288e-01 1990 2003 6 2.65980e+01 1.08725e+00 853 2003 7 2.68053e+01 1.00634e+00 1069 2003 8 2.77665e+01 6.97417e-01 1505 2003 9 2.83857e+01 1.03522e+00 1853 2003 10 2.90874e+01 7.58506e-01 2030 2003 11 2.78473e+01 8.74883e-01 1487 2003 12 2.68371e+01 8.98494e-01 2185 2004 1 2.60880e+01 8.47386e-01 2702 2004 2 2.59707e+01 7.50788e-01 2467 2004 3 2.56070e+01 7.57714e-01 2474 2004 4 2.64687e+01 6.52534e-01 2567 2004 5 2.60544e+01 1.10440e+00 1237 2004 6 2.70348e+01 8.06666e-01 1528 2004 7 2.74615e+01 9.65917e-01 1409 2004 8 2.77598e+01 8.54996e-01 1497 2004 9 2.81228e+01 1.20250e+00 1334 2004 10 2.84835e+01 8.07589e-01 1892 2004 11 2.72867e+01 8.14700e-01 1765 2004 12 2.63991e+01 6.45456e-01 2627 2005 1 2.54366e+01 8.15363e-01 1705 2005 2 2.50558e+01 7.91491e-01 1796 2005 3 2.59602e+01 6.69026e-01 3269 2005 4 2.68350e+01 9.09181e-01 1695 2005 5 2.72620e+01 8.89988e-01 981 2005 6 2.79232e+01 1.05372e+00 1532 2005 7 2.80731e+01 8.17867e-01 1480 2005 8 2.89638e+01 6.36391e-01 1387 2005 9 2.93894e+01 8.31905e-01 2165 2005 10 2.86414e+01 1.16475e+00 1361 2005 11 2.78606e+01 8.22405e-01 1790 2005 12 2.68661e+01 9.48919e-01 2169 2006 1 2.60269e+01 8.05841e-01 1712 2006 2 2.58443e+01 5.60003e-01 2426 2006 3 2.61042e+01 6.47716e-01 2374 2006 4 2.66526e+01 7.97945e-01 2020 2006 5 2.70842e+01 8.00427e-01 2196 2006 6 2.74365e+01 1.07679e+00 1149 2006 7 2.77204e+01 6.39153e-01 1732 2006 8 2.76450e+01 8.73641e-01 1429 2006 9 2.90887e+01 8.52443e-01 2416 2006 10 2.88024e+01 9.10136e-01 1768 2006 11 2.86170e+01 7.14889e-01 2688 2006 12 2.71634e+01 7.31172e-01 2247 2007 1 2.64156e+01 6.15187e-01 2616 2007 2 2.62943e+01 5.72306e-01 2901 2007 3 2.61075e+01 5.21769e-01 2288 2007 4 2.62620e+01 6.49587e-01 1803 2007 5 2.75334e+01 8.40820e-01 1746 2007 6 2.76953e+01 1.05869e+00 1270 2007 7 2.72972e+01 8.31328e-01 1334 2007 8 2.81562e+01 8.26880e-01 1646 2007 9 2.85593e+01 7.03294e-01 2158 2007 10 2.89464e+01 7.23435e-01 1744 2007 11 2.80015e+01 7.82547e-01 1309 2007 12 2.67115e+01 4.44564e-01 2096 2008 1 2.63431e+01 6.04253e-01 2470 2008 2 2.54149e+01 5.96182e-01 2543 2008 3 2.55630e+01 7.72265e-01 2812 2008 4 2.56817e+01 7.89825e-01 2455 2008 5 2.66102e+01 8.25308e-01 2328 2008 6 2.74987e+01 7.08264e-01 1356 2008 7 2.72441e+01 7.34916e-01 2229 2008 8 2.79756e+01 1.14609e+00 1902 2008 9 2.85590e+01 7.78409e-01 1260 2008 10 2.85741e+01 6.67885e-01 2463 2008 11 2.81345e+01 8.51146e-01 1789 2008 12 2.64949e+01 6.25365e-01 1869 2009 1 2.56563e+01 8.93495e-01 2196 2009 2 2.55478e+01 6.72480e-01 1718 2009 3 2.53343e+01 6.76164e-01 1632 2009 4 2.55306e+01 7.57314e-01 2155 2009 5 2.60681e+01 8.94030e-01 1247 2009 6 2.70508e+01 6.83353e-01 1544 2009 7 2.71931e+01 9.12204e-01 1605 2009 8 2.76832e+01 6.95387e-01 1707 2009 9 2.87152e+01 8.56944e-01 1731 2009 10 2.86280e+01 7.30961e-01 2528 2009 11 2.82712e+01 6.21320e-01 2462 2009 12 2.74073e+01 6.60964e-01 2546 2010 1 2.68357e+01 6.90146e-01 1874 2010 2 2.67331e+01 6.51255e-01 2460 2010 3 2.68126e+01 8.62903e-01 2567 2010 4 2.67289e+01 8.43305e-01 1753 2010 5 2.69194e+01 9.44568e-01 1201 2010 6 2.77484e+01 1.09483e+00 1196 2010 7 2.74829e+01 8.01919e-01 1074 2010 8 2.87635e+01 9.41960e-01 1742 2010 9 2.87672e+01 8.62398e-01 1470 2010 10 2.89003e+01 8.91847e-01 1988 2010 11 2.72022e+01 9.85150e-01 991 2010 12 2.66157e+01 1.12356e+00 1307 2011 1 2.55969e+01 6.48899e-01 2557 2011 2 2.56951e+01 6.42832e-01 2057 2011 3 2.56051e+01 5.91030e-01 2886 2011 4 2.60251e+01 7.16250e-01 2266 2011 5 2.66617e+01 7.18797e-01 806 2011 6 2.76252e+01 6.12273e-01 1154 2011 7 2.78082e+01 6.96107e-01 1430 2011 8 2.79485e+01 8.62168e-01 1402 2011 9 2.84645e+01 8.42984e-01 1643 2011 10 2.88056e+01 6.74571e-01 2315 2011 11 2.77980e+01 9.80898e-01 1605 2011 12 2.71058e+01 8.16623e-01 1459 2012 1 2.60930e+01 1.02041e+00 2264 2012 2 2.55585e+01 7.67885e-01 2471 2012 3 2.56349e+01 6.66890e-01 1884 2012 4 2.60748e+01 1.00861e+00 1944 2012 5 2.64677e+01 8.69373e-01 1335 2012 6 2.73472e+01 6.57929e-01 1819 2012 7 2.71179e+01 9.38939e-01 1175 2012 8 2.79435e+01 7.86494e-01 1402 2012 9 2.87438e+01 7.13671e-01 2251 2012 10 2.87848e+01 7.34267e-01 1501 2012 11 2.84153e+01 1.14409e+00 2152 2012 12 2.72538e+01 7.07868e-01 1596 2013 1 2.62839e+01 6.35667e-01 2216 2013 2 2.58587e+01 8.33201e-01 2381 2013 3 2.61118e+01 8.80372e-01 2229 2013 4 2.61810e+01 7.13272e-01 2672 2013 5 2.67662e+01 9.14174e-01 1723 2013 6 2.61196e+01 1.21085e+00 868 2013 7 2.74087e+01 8.89380e-01 1901 2013 8 2.81017e+01 8.01932e-01 1809 2013 9 2.90828e+01 9.08989e-01 1471 2013 10 2.89732e+01 6.97203e-01 1937 2013 11 2.83474e+01 5.12783e-01 1866 2013 12 2.67943e+01 7.25201e-01 2070 2014 1 2.61924e+01 4.88000e-01 2520 2014 2 2.61994e+01 5.33741e-01 2443 2014 3 2.63027e+01 7.00065e-01 3262 2014 4 2.64643e+01 7.90925e-01 2699 2014 5 2.66204e+01 7.89373e-01 1574 2014 6 2.70648e+01 1.09109e+00 1521 2014 7 2.70435e+01 7.27892e-01 1566 2014 8 2.76537e+01 6.94607e-01 1223 2014 9 2.86764e+01 8.79546e-01 1505 2014 10 2.90876e+01 7.70868e-01 2617 2014 11 2.84628e+01 8.07753e-01 1916 2014 12 2.73925e+01 7.71223e-01 2413 2015 1 2.67844e+01 5.14038e-01 2157 2015 2 2.65759e+01 5.01050e-01 2437 2015 3 2.61335e+01 6.88867e-01 2955 2015 4 2.64243e+01 6.42971e-01 2915 2015 5 2.65422e+01 9.01439e-01 2193 2015 6 2.68808e+01 1.04684e+00 1433 2015 7 2.73853e+01 6.21441e-01 1377 2015 8 2.81540e+01 6.20774e-01 2346 2015 9 2.89155e+01 7.60691e-01 2371 2015 10 2.92144e+01 7.77069e-01 2356 2015 11 2.85040e+01 7.26976e-01 1256 2015 12 2.76920e+01 8.28473e-01 1586 2016 1 2.66922e+01 5.93556e-01 2504 2016 2 2.64911e+01 6.49591e-01 2671 2016 3 2.63270e+01 8.56302e-01 2200 2016 4 2.69159e+01 8.02791e-01 1704 2016 5 2.69075e+01 8.47755e-01 1226 2016 6 2.74569e+01 7.67542e-01 1465 2016 7 2.76056e+01 6.12764e-01 1690 2016 8 2.81374e+01 7.39489e-01 2186 2016 9 2.90283e+01 9.10615e-01 1966 2016 10 2.89221e+01 1.00411e+00 1511 2016 11 2.81859e+01 9.43468e-01 662 2016 12 2.73476e+01 7.60648e-01 2249 2017 1 2.64935e+01 5.99447e-01 2085 2017 2 2.63306e+01 6.35650e-01 2483 2017 3 2.61011e+01 5.39344e-01 1813 2017 4 2.66152e+01 8.82275e-01 2022 2017 5 2.70315e+01 8.12710e-01 1526 2017 6 2.72880e+01 6.45670e-01 1940 2017 7 2.80283e+01 6.26899e-01 2037 2017 8 2.84830e+01 6.02121e-01 1829 2017 9 2.80635e+01 1.38178e+00 1004 2017 10 2.81307e+01 8.90865e-01 1765 2017 11 2.80719e+01 8.69385e-01 1647 2017 12 2.73523e+01 7.12189e-01 2254 2018 1 2.67066e+01 6.43450e-01 1353 2018 2 2.58165e+01 5.81078e-01 1382 2018 3 2.60279e+01 5.64831e-01 2923 2018 4 2.61305e+01 6.64586e-01 2795 2018 5 2.63888e+01 7.63060e-01 1855 2018 6 2.71453e+01 8.02220e-01 1529 2018 7 2.71342e+01 5.49299e-01 834 2018 8 2.81220e+01 7.25926e-01 2152 2018 9 2.84091e+01 8.57235e-01 1844 2018 10 2.86330e+01 7.79491e-01 2110 2018 11 2.79663e+01 7.02309e-01 2470 2018 12 2.72131e+01 7.49398e-01 2377 2019 1 2.64227e+01 6.20160e-01 2347 2019 2 2.60546e+01 6.90580e-01 2320 2019 3 2.61253e+01 6.53052e-01 2925 2019 4 2.64936e+01 6.23988e-01 2562 2019 5 2.69805e+01 8.05706e-01 1366 2019 6 2.70395e+01 6.06185e-01 2361 2019 7 2.78321e+01 8.06886e-01 2188 2019 8 2.82181e+01 6.64153e-01 2204 2019 9 2.87895e+01 9.55632e-01 1678 2019 10 2.93510e+01 7.58231e-01 2553 2019 11 2.87407e+01 6.21868e-01 2966 2019 12 2.79642e+01 7.11648e-01 2397 2020 1 2.68701e+01 6.22531e-01 1703 2020 2 2.64427e+01 7.07715e-01 2535 2020 3 2.62860e+01 6.62780e-01 2229 2020 4 2.67332e+01 7.18374e-01 2542 2020 5 2.74398e+01 1.05665e+00 1893 2020 6 2.79187e+01 9.81523e-01 2172 2020 7 2.83444e+01 7.74129e-01 1877 2020 8 2.85955e+01 5.52887e-01 1813 2020 9 2.94773e+01 9.49352e-01 2116 2020 10 2.92026e+01 7.04203e-01 2126 2020 11 2.81410e+01 1.05039e+00 1487 2020 12 2.73513e+01 5.81920e-01 2686 2021 1 2.67277e+01 5.15149e-01 2285 2021 2 2.62429e+01 7.12036e-01 2375 2021 3 2.60157e+01 5.60896e-01 2698 2021 4 2.64396e+01 5.68173e-01 2371 2021 5 2.66801e+01 6.55307e-01 2471 2021 6 2.70475e+01 8.53631e-01 1186 2021 7 2.74296e+01 7.15860e-01 1641 2021 8 2.76489e+01 7.88897e-01 1620 2021 9 2.89222e+01 8.78172e-01 2665 2021 10 2.93581e+01 9.00688e-01 2521 2021 11 2.86614e+01 6.16771e-01 2331 2021 12 2.72587e+01 7.91778e-01 2108 2022 1 2.68290e+01 6.84692e-01 2847 2022 2 2.63635e+01 6.75103e-01 2094 2022 3 2.62244e+01 6.54616e-01 2336 2022 4 2.64749e+01 6.37080e-01 1005 2022 5 2.67830e+01 6.59722e-01 2391 2022 6 2.77491e+01 8.48139e-01 1961 2022 7 2.74799e+01 7.39365e-01 1441 2022 8 2.83804e+01 9.22317e-01 2186 2022 9 2.85796e+01 9.07098e-01 1586 2022 10 2.88654e+01 7.45475e-01 1790 2022 11 2.80578e+01 6.45349e-01 2398 2022 12 2.69665e+01 5.85601e-01 2748 2023 1 2.67613e+01 5.67547e-01 2500 2023 2 2.61166e+01 6.97676e-01 2105 2023 3 2.62147e+01 5.20933e-01 3085 2023 4 2.65130e+01 6.89977e-01 2512 2023 5 2.76854e+01 6.23689e-01 2491 2023 6 2.82241e+01 5.30776e-01 2034 2023 7 2.79166e+01 1.06998e+00 1407 2023 8 2.93896e+01 6.28936e-01 1661 2023 9 2.96203e+01 7.15637e-01 2077 2023 10 2.98086e+01 7.81589e-01 1917 2023 11 2.86110e+01 7.55899e-01 2126 2023 12 2.77608e+01 8.27711e-01 2100 2024 1 2.69396e+01 5.91852e-01 2340 2024 2 2.66325e+01 7.33764e-01 1910 2024 3 2.67609e+01 7.24210e-01 2571 2024 4 2.65062e+01 3.59451e-01 128