YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.54227e+01 3.73732e-01 255 2000 3 2.58105e+01 7.53474e-01 400 2000 4 2.52713e+01 7.80686e-01 618 2000 5 2.68024e+01 7.66129e-01 387 2000 6 2.70504e+01 9.16879e-01 197 2000 7 2.69965e+01 1.02412e+00 386 2000 8 2.80226e+01 6.37460e-01 264 2000 9 2.85781e+01 6.25496e-01 679 2000 10 2.91801e+01 6.02085e-01 672 2000 11 2.81066e+01 8.49061e-01 907 2000 12 2.69917e+01 5.99278e-01 666 2001 1 2.64929e+01 3.95058e-01 451 2001 2 2.56055e+01 6.41508e-01 357 2001 3 2.58534e+01 5.26798e-01 400 2001 4 2.59791e+01 1.14197e+00 487 2001 5 2.68533e+01 8.30725e-01 400 2001 6 2.73978e+01 3.38000e-01 137 2001 7 2.75209e+01 8.11934e-01 429 2001 8 2.81318e+01 6.60057e-01 652 2001 9 2.86440e+01 7.16951e-01 565 2001 10 2.83528e+01 9.45786e-01 593 2001 11 2.75503e+01 2.03245e+00 383 2001 12 2.67035e+01 6.66340e-01 468 2002 1 2.64730e+01 4.20221e-01 614 2002 2 2.60298e+01 6.79903e-01 432 2002 3 2.61932e+01 7.25736e-01 377 2002 4 2.57194e+01 5.80138e-01 395 2002 5 2.67886e+01 6.16365e-01 704 2002 6 2.68336e+01 7.88486e-01 192 2002 7 2.74599e+01 7.74317e-01 2081 2002 8 2.82132e+01 5.96389e-01 1766 2002 9 2.86384e+01 6.95317e-01 1525 2002 10 2.84940e+01 9.22598e-01 2585 2002 11 2.84656e+01 4.33696e-01 3300 2002 12 2.72734e+01 6.80647e-01 2923 2003 1 2.68353e+01 4.72602e-01 2788 2003 2 2.63594e+01 4.16988e-01 2105 2003 3 2.64195e+01 5.62288e-01 2776 2003 4 2.69415e+01 6.71512e-01 1455 2003 5 2.66495e+01 7.22145e-01 1843 2003 6 2.69939e+01 1.11492e+00 946 2003 7 2.67635e+01 8.25700e-01 1416 2003 8 2.77505e+01 7.25043e-01 2042 2003 9 2.85217e+01 7.01782e-01 1739 2003 10 2.90955e+01 6.20701e-01 2493 2003 11 2.81190e+01 8.19474e-01 1646 2003 12 2.68448e+01 6.71294e-01 2001 2004 1 2.64069e+01 6.11235e-01 2485 2004 2 2.61190e+01 4.50817e-01 2838 2004 3 2.58641e+01 5.95379e-01 2444 2004 4 2.65977e+01 6.87442e-01 2393 2004 5 2.63701e+01 8.32448e-01 1402 2004 6 2.70287e+01 8.14510e-01 1075 2004 7 2.74313e+01 8.15513e-01 1689 2004 8 2.81651e+01 5.60540e-01 1765 2004 9 2.82251e+01 9.17314e-01 1260 2004 10 2.84365e+01 7.81915e-01 2021 2004 11 2.74418e+01 9.28200e-01 1539 2004 12 2.64988e+01 5.13030e-01 2307 2005 1 2.53590e+01 8.59724e-01 1147 2005 2 2.52213e+01 7.73441e-01 2083 2005 3 2.60972e+01 5.74345e-01 3418 2005 4 2.69473e+01 6.88420e-01 2128 2005 5 2.75840e+01 9.07815e-01 1299 2005 6 2.81212e+01 1.02777e+00 1482 2005 7 2.78047e+01 7.87614e-01 1463 2005 8 2.88078e+01 6.73471e-01 1436 2005 9 2.94513e+01 6.29113e-01 1976 2005 10 2.88991e+01 6.68706e-01 1466 2005 11 2.78949e+01 7.57090e-01 1854 2005 12 2.71495e+01 6.27924e-01 2349 2006 1 2.61496e+01 7.15362e-01 1964 2006 2 2.59982e+01 5.82918e-01 2606 2006 3 2.62046e+01 6.25163e-01 2640 2006 4 2.66877e+01 9.00281e-01 2092 2006 5 2.74028e+01 5.86686e-01 1773 2006 6 2.79325e+01 7.60889e-01 1731 2006 7 2.76802e+01 7.05299e-01 1649 2006 8 2.77225e+01 8.61133e-01 1323 2006 9 2.90471e+01 6.88018e-01 2745 2006 10 2.91946e+01 7.17583e-01 1733 2006 11 2.86716e+01 6.17523e-01 2805 2006 12 2.74310e+01 6.70966e-01 2450 2007 1 2.65538e+01 6.41641e-01 2524 2007 2 2.64276e+01 5.28300e-01 2731 2007 3 2.61885e+01 5.69260e-01 2110 2007 4 2.65016e+01 6.77636e-01 2125 2007 5 2.78521e+01 8.15673e-01 1480 2007 6 2.76898e+01 8.33256e-01 1839 2007 7 2.76146e+01 7.33165e-01 1338 2007 8 2.81298e+01 7.29789e-01 1766 2007 9 2.85901e+01 6.34683e-01 2429 2007 10 2.87247e+01 1.14258e+00 1702 2007 11 2.80185e+01 8.48049e-01 1840 2007 12 2.67978e+01 6.72365e-01 1853 2008 1 2.63042e+01 6.07364e-01 2646 2008 2 2.56617e+01 4.80758e-01 2236 2008 3 2.55941e+01 5.97652e-01 2508 2008 4 2.59380e+01 7.13683e-01 2492 2008 5 2.68369e+01 7.90127e-01 2623 2008 6 2.73720e+01 9.22456e-01 1582 2008 7 2.73547e+01 9.94079e-01 1952 2008 8 2.82780e+01 8.43698e-01 2155 2008 9 2.84978e+01 7.69482e-01 1354 2008 10 2.85588e+01 7.62057e-01 2194 2008 11 2.82474e+01 6.55176e-01 2305 2008 12 2.65217e+01 5.39353e-01 2027 2009 1 2.58594e+01 5.07035e-01 2436 2009 2 2.57102e+01 5.41591e-01 1588 2009 3 2.53651e+01 5.68208e-01 1689 2009 4 2.57294e+01 5.99972e-01 2298 2009 5 2.63183e+01 9.36600e-01 1075 2009 6 2.71719e+01 6.12078e-01 1625 2009 7 2.74107e+01 9.55595e-01 1706 2009 8 2.78335e+01 8.06942e-01 1425 2009 9 2.87325e+01 7.37485e-01 2296 2009 10 2.87081e+01 5.75962e-01 2513 2009 11 2.84543e+01 6.44707e-01 2523 2009 12 2.75601e+01 5.70465e-01 2493 2010 1 2.69434e+01 6.78767e-01 2104 2010 2 2.68876e+01 6.20773e-01 2510 2010 3 2.69555e+01 7.47737e-01 2623 2010 4 2.68828e+01 8.16806e-01 1363 2010 5 2.74984e+01 8.58954e-01 1145 2010 6 2.80982e+01 7.43342e-01 1208 2010 7 2.80076e+01 9.67596e-01 1077 2010 8 2.88510e+01 6.73795e-01 1833 2010 9 2.86036e+01 7.47510e-01 1202 2010 10 2.88363e+01 7.25430e-01 2189 2010 11 2.73136e+01 7.86085e-01 993 2010 12 2.71379e+01 6.57794e-01 1721 2011 1 2.56890e+01 6.58546e-01 2519 2011 2 2.57795e+01 5.14584e-01 1923 2011 3 2.55385e+01 8.25874e-01 2738 2011 4 2.62226e+01 8.04831e-01 2513 2011 5 2.70668e+01 9.93494e-01 856 2011 6 2.79577e+01 5.45422e-01 1137 2011 7 2.81136e+01 5.95405e-01 1487 2011 8 2.79806e+01 7.39502e-01 1451 2011 9 2.84133e+01 7.79281e-01 1662 2011 10 2.89339e+01 6.03343e-01 2209 2011 11 2.78360e+01 9.39234e-01 1805 2011 12 2.71728e+01 7.75293e-01 2219 2012 1 2.62695e+01 6.51210e-01 2227 2012 2 2.57214e+01 5.33542e-01 2389 2012 3 2.55347e+01 9.85793e-01 1923 2012 4 2.59778e+01 9.59239e-01 1852 2012 5 2.68076e+01 7.18336e-01 1779 2012 6 2.74051e+01 6.27008e-01 1901 2012 7 2.73672e+01 8.14258e-01 1655 2012 8 2.78281e+01 8.08908e-01 1107 2012 9 2.87391e+01 6.82072e-01 2433 2012 10 2.87447e+01 8.18922e-01 1543 2012 11 2.84958e+01 7.67685e-01 2602 2012 12 2.74380e+01 7.10237e-01 1798 2013 1 2.63985e+01 6.10670e-01 2144 2013 2 2.59268e+01 5.42719e-01 2384 2013 3 2.63039e+01 7.66424e-01 2063 2013 4 2.64277e+01 6.92769e-01 2411 2013 5 2.71563e+01 9.89087e-01 1473 2013 6 2.63356e+01 1.12320e+00 638 2013 7 2.74430e+01 1.16158e+00 1831 2013 8 2.81750e+01 7.86892e-01 1614 2013 9 2.91052e+01 8.34416e-01 1430 2013 10 2.90385e+01 8.35474e-01 1928 2013 11 2.81277e+01 8.54740e-01 2139 2013 12 2.69462e+01 6.47476e-01 2004 2014 1 2.62626e+01 4.76006e-01 3007 2014 2 2.62527e+01 4.33601e-01 2405 2014 3 2.64482e+01 6.13268e-01 3299 2014 4 2.67099e+01 7.42930e-01 2540 2014 5 2.69316e+01 7.14310e-01 1759 2014 6 2.73198e+01 1.09761e+00 1217 2014 7 2.71826e+01 5.55893e-01 1537 2014 8 2.75876e+01 9.21900e-01 1268 2014 9 2.85680e+01 9.65771e-01 1488 2014 10 2.90076e+01 7.96019e-01 2853 2014 11 2.83928e+01 7.94469e-01 2439 2014 12 2.73299e+01 8.56397e-01 2310 2015 1 2.66316e+01 5.13701e-01 2390 2015 2 2.65781e+01 5.35702e-01 2176 2015 3 2.63183e+01 6.15661e-01 2900 2015 4 2.65948e+01 7.55318e-01 3085 2015 5 2.66305e+01 1.04139e+00 2163 2015 6 2.70375e+01 1.01173e+00 803 2015 7 2.70921e+01 1.03021e+00 1143 2015 8 2.79364e+01 7.87523e-01 2133 2015 9 2.88293e+01 8.55001e-01 2623 2015 10 2.94253e+01 6.74972e-01 1986 2015 11 2.83922e+01 7.31230e-01 1549 2015 12 2.75711e+01 8.31994e-01 2106 2016 1 2.67701e+01 5.67783e-01 2254 2016 2 2.66524e+01 5.87666e-01 2735 2016 3 2.63411e+01 7.58638e-01 2279 2016 4 2.71081e+01 8.71280e-01 1701 2016 5 2.74825e+01 5.71281e-01 1582 2016 6 2.76611e+01 6.28750e-01 1226 2016 7 2.76584e+01 4.82597e-01 1809 2016 8 2.82384e+01 7.27123e-01 1937 2016 9 2.90155e+01 7.75401e-01 2470 2016 10 2.89173e+01 1.37609e+00 1894 2016 11 2.83992e+01 1.17617e+00 1233 2016 12 2.74949e+01 7.39694e-01 2297 2017 1 2.64620e+01 6.09336e-01 2196 2017 2 2.63064e+01 6.07027e-01 2562 2017 3 2.62050e+01 7.07793e-01 2013 2017 4 2.66469e+01 7.87434e-01 1732 2017 5 2.69199e+01 9.55274e-01 1539 2017 6 2.75803e+01 9.12720e-01 2117 2017 7 2.81075e+01 6.58897e-01 2115 2017 8 2.83411e+01 6.85973e-01 1915 2017 9 2.81068e+01 1.45938e+00 960 2017 10 2.82235e+01 9.36489e-01 1765 2017 11 2.81899e+01 6.82223e-01 1963 2017 12 2.74249e+01 6.61472e-01 2418 2018 1 2.66503e+01 6.28497e-01 1498 2018 2 2.58969e+01 7.50930e-01 1763 2018 3 2.61119e+01 5.71594e-01 2857 2018 4 2.63221e+01 7.14882e-01 2315 2018 5 2.66445e+01 7.69256e-01 1924 2018 6 2.71745e+01 7.87473e-01 1651 2018 7 2.70883e+01 1.15437e+00 955 2018 8 2.80223e+01 7.11876e-01 2182 2018 9 2.84601e+01 8.87685e-01 1848 2018 10 2.85931e+01 7.63114e-01 1761 2018 11 2.79502e+01 7.52379e-01 2708 2018 12 2.72569e+01 6.25981e-01 2711 2019 1 2.63391e+01 5.25380e-01 2317 2019 2 2.62489e+01 5.50359e-01 2322 2019 3 2.63392e+01 6.67060e-01 3205 2019 4 2.63730e+01 8.32431e-01 2453 2019 5 2.71635e+01 8.47849e-01 2033 2019 6 2.71960e+01 7.26613e-01 2292 2019 7 2.78238e+01 6.95898e-01 2409 2019 8 2.83318e+01 6.14866e-01 2434 2019 9 2.88776e+01 8.98378e-01 1960 2019 10 2.91635e+01 7.45768e-01 2711 2019 11 2.86889e+01 7.10219e-01 3049 2019 12 2.80039e+01 8.15339e-01 2726 2020 1 2.68589e+01 7.87332e-01 1855 2020 2 2.64803e+01 7.16990e-01 2525 2020 3 2.63802e+01 6.94135e-01 1740 2020 4 2.69759e+01 6.20663e-01 2552 2020 5 2.77254e+01 6.71754e-01 2678 2020 6 2.80761e+01 5.96649e-01 2289 2020 7 2.82702e+01 8.77959e-01 1728 2020 8 2.86309e+01 5.85941e-01 1764 2020 9 2.92914e+01 8.87340e-01 1959 2020 10 2.90958e+01 7.08887e-01 2136 2020 11 2.81528e+01 7.14366e-01 1484 2020 12 2.75211e+01 5.31253e-01 2808 2021 1 2.66821e+01 7.85191e-01 2066 2021 2 2.62968e+01 6.40069e-01 2795 2021 3 2.60931e+01 6.89932e-01 2610 2021 4 2.65448e+01 5.54996e-01 2020 2021 5 2.66369e+01 8.55214e-01 2141 2021 6 2.73234e+01 8.37924e-01 1033 2021 7 2.73271e+01 8.93042e-01 1592 2021 8 2.78344e+01 8.31239e-01 1349 2021 9 2.88973e+01 9.01651e-01 2729 2021 10 2.91965e+01 9.22816e-01 2890 2021 11 2.86413e+01 7.50152e-01 2381 2021 12 2.75062e+01 6.31897e-01 2189 2022 1 2.68201e+01 5.42569e-01 3364 2022 2 2.65637e+01 7.06610e-01 1979 2022 3 2.62368e+01 7.88031e-01 2422 2022 4 2.63156e+01 6.59064e-01 1120 2022 5 2.68478e+01 8.84277e-01 2368 2022 6 2.77286e+01 6.82889e-01 2171 2022 7 2.74589e+01 7.87708e-01 1312 2022 8 2.81145e+01 9.85696e-01 1997 2022 9 2.86891e+01 9.40279e-01 1992 2022 10 2.87728e+01 8.10763e-01 2108 2022 11 2.78841e+01 7.50905e-01 2690 2022 12 2.69157e+01 5.40740e-01 2940 2023 1 2.66554e+01 5.97713e-01 2455 2023 2 2.59433e+01 6.55673e-01 2302 2023 3 2.59993e+01 6.37240e-01 2920 2023 4 2.64823e+01 6.78347e-01 2585 2023 5 2.80544e+01 6.50702e-01 2444 2023 6 2.84974e+01 6.53986e-01 2054 2023 7 2.84419e+01 4.98317e-01 1292 2023 8 2.92421e+01 5.73215e-01 1350 2023 9 2.96034e+01 7.82967e-01 2026 2023 10 2.96125e+01 9.55242e-01 2439 2023 11 2.87792e+01 7.35136e-01 1794 2023 12 2.77382e+01 9.09288e-01 2466 2024 1 2.70174e+01 5.57134e-01 2585 2024 2 2.69192e+01 5.20256e-01 1778 2024 3 2.68042e+01 6.97722e-01 2927 2024 4 2.67331e+01 6.56764e-01 226