YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.35673e+01 4.52614e-01 109 2000 3 2.44781e+01 1.27302e+00 582 2000 4 2.50853e+01 8.38605e-01 619 2000 5 2.74821e+01 1.33542e+00 638 2000 6 2.83061e+01 8.93777e-01 259 2000 7 3.00065e+01 1.27312e+00 468 2000 8 2.95431e+01 1.95748e+00 500 2000 9 2.86063e+01 1.80967e+00 242 2000 10 2.74429e+01 1.12558e+00 955 2000 11 2.57022e+01 5.95155e-01 457 2000 12 2.39822e+01 5.70195e-01 535 2001 1 2.24850e+01 7.11891e-01 370 2001 2 2.34481e+01 8.55515e-01 513 2001 3 2.37004e+01 6.90558e-01 796 2001 4 2.57257e+01 1.14889e+00 644 2001 5 2.58417e+01 9.23369e-01 326 2001 6 2.90884e+01 4.01594e-01 256 2001 7 2.79666e+01 1.58448e+00 601 2001 8 2.94305e+01 1.32298e+00 304 2001 9 2.82883e+01 9.58994e-01 271 2001 10 2.74393e+01 1.43489e+00 518 2001 11 2.52097e+01 8.87032e-01 479 2001 12 2.46189e+01 9.90454e-01 574 2002 1 2.21732e+01 1.07168e+00 569 2002 2 2.31762e+01 8.63056e-01 510 2002 3 2.39185e+01 1.02332e+00 485 2002 4 2.68013e+01 7.32648e-01 721 2002 5 2.68322e+01 1.00806e+00 962 2002 6 2.73532e+01 2.29055e+00 269 2002 7 2.96366e+01 8.97315e-01 2157 2002 8 2.98162e+01 9.64283e-01 1579 2002 9 2.85736e+01 1.43917e+00 1646 2002 10 2.84041e+01 7.57158e-01 3325 2002 11 2.66933e+01 1.33034e+00 2399 2002 12 2.39303e+01 6.65424e-01 1806 2003 1 2.16202e+01 1.14145e+00 1762 2003 2 2.21987e+01 8.59071e-01 2811 2003 3 2.60382e+01 1.15370e+00 2435 2003 4 2.47264e+01 1.25246e+00 2567 2003 5 2.79973e+01 1.17101e+00 3078 2003 6 2.94337e+01 1.14956e+00 1387 2003 7 2.88717e+01 1.10077e+00 2232 2003 8 2.97630e+01 1.22723e+00 1646 2003 9 2.95878e+01 8.93836e-01 1611 2003 10 2.87547e+01 1.11737e+00 2699 2003 11 2.62249e+01 6.23845e-01 2179 2003 12 2.33350e+01 1.41584e+00 1286 2004 1 2.35472e+01 8.05651e-01 2226 2004 2 2.30695e+01 1.02442e+00 2050 2004 3 2.37936e+01 1.00811e+00 2966 2004 4 2.40379e+01 1.02700e+00 2783 2004 5 2.61476e+01 9.32013e-01 2785 2004 6 2.92280e+01 1.03818e+00 2699 2004 7 2.98092e+01 9.56518e-01 2131 2004 8 3.01572e+01 1.44089e+00 1853 2004 9 2.91908e+01 1.10350e+00 1807 2004 10 2.77417e+01 8.93371e-01 2472 2004 11 2.59972e+01 1.09259e+00 3119 2004 12 2.43041e+01 1.07108e+00 1953 2005 1 2.29324e+01 7.17031e-01 2564 2005 2 2.28316e+01 9.41718e-01 2095 2005 3 2.35251e+01 1.23299e+00 2536 2005 4 2.45215e+01 7.09513e-01 2916 2005 5 2.64244e+01 1.58126e+00 2649 2005 6 2.83902e+01 9.02449e-01 1733 2005 7 2.93917e+01 1.11738e+00 2221 2005 8 3.04958e+01 1.28714e+00 2696 2005 9 2.94756e+01 1.10724e+00 2447 2005 10 2.75909e+01 1.16597e+00 1775 2005 11 2.52336e+01 1.08528e+00 2572 2005 12 2.33632e+01 9.89347e-01 2688 2006 1 2.25032e+01 8.81649e-01 2699 2006 2 2.22671e+01 1.10785e+00 2482 2006 3 2.40543e+01 1.15679e+00 2872 2006 4 2.58390e+01 1.15623e+00 3525 2006 5 2.71530e+01 1.02610e+00 2821 2006 6 2.92405e+01 9.59412e-01 2241 2006 7 2.91839e+01 1.00254e+00 1783 2006 8 2.97251e+01 7.89609e-01 1906 2006 9 3.01783e+01 7.27467e-01 1991 2006 10 2.84295e+01 1.10857e+00 2416 2006 11 2.52113e+01 1.17301e+00 1668 2006 12 2.44694e+01 8.87882e-01 1018 2007 1 2.47204e+01 7.85726e-01 2113 2007 2 2.21994e+01 8.51888e-01 1301 2007 3 2.39708e+01 6.37491e-01 2644 2007 4 2.46069e+01 1.09176e+00 3106 2007 5 2.68574e+01 8.78603e-01 2927 2007 6 2.83590e+01 1.32806e+00 2150 2007 7 3.03485e+01 9.22868e-01 2507 2007 8 3.03469e+01 8.25343e-01 2686 2007 9 2.99005e+01 1.01437e+00 2107 2007 10 2.78877e+01 1.13358e+00 1702 2007 11 2.61793e+01 9.24824e-01 2823 2007 12 2.49708e+01 7.13030e-01 2763 2008 1 2.32988e+01 8.53749e-01 1950 2008 2 2.40620e+01 1.03349e+00 2754 2008 3 2.36182e+01 8.87787e-01 2372 2008 4 2.53593e+01 6.93697e-01 3362 2008 5 2.72358e+01 1.33751e+00 3661 2008 6 2.83157e+01 9.88827e-01 2224 2008 7 2.89381e+01 1.05233e+00 2690 2008 8 3.00299e+01 9.27008e-01 2152 2008 9 2.85844e+01 1.25788e+00 1896 2008 10 2.77815e+01 1.16901e+00 1860 2008 11 2.49948e+01 8.64984e-01 2418 2008 12 2.36540e+01 6.92569e-01 2619 2009 1 2.23006e+01 1.17969e+00 2528 2009 2 2.16858e+01 1.06051e+00 2565 2009 3 2.33110e+01 1.09755e+00 2299 2009 4 2.52020e+01 6.38410e-01 2749 2009 5 2.67671e+01 1.55209e+00 3158 2009 6 2.97913e+01 1.35977e+00 1739 2009 7 3.00181e+01 1.36934e+00 2424 2009 8 2.98268e+01 8.27141e-01 2808 2009 9 3.01587e+01 9.93467e-01 1797 2009 10 2.92635e+01 1.34164e+00 2626 2009 11 2.68181e+01 8.53752e-01 1973 2009 12 2.51006e+01 1.09324e+00 2496 2010 1 2.28369e+01 1.11480e+00 1780 2010 2 2.17419e+01 1.36195e+00 1113 2010 3 2.13095e+01 1.33620e+00 1900 2010 4 2.41703e+01 1.47112e+00 2075 2010 5 2.74430e+01 1.14815e+00 3139 2010 6 3.04114e+01 1.18203e+00 2529 2010 7 2.93997e+01 1.36881e+00 1735 2010 8 3.02694e+01 1.09892e+00 2189 2010 9 2.98613e+01 8.30312e-01 1675 2010 10 2.72774e+01 8.83100e-01 2417 2010 11 2.58663e+01 8.73322e-01 2548 2010 12 2.30995e+01 1.28756e+00 2886 2011 1 2.13704e+01 8.58914e-01 2330 2011 2 2.14307e+01 1.09564e+00 3001 2011 3 2.38502e+01 9.85424e-01 3511 2011 4 2.67978e+01 8.34400e-01 3614 2011 5 2.79571e+01 8.06287e-01 3107 2011 6 2.85893e+01 1.14046e+00 2276 2011 7 3.03202e+01 1.33992e+00 2165 2011 8 3.05964e+01 9.32654e-01 1731 2011 9 2.98907e+01 1.29391e+00 2671 2011 10 2.79203e+01 1.59698e+00 913 2011 11 2.52077e+01 7.24501e-01 3194 2011 12 2.41928e+01 7.43699e-01 2229 2012 1 2.30294e+01 6.65459e-01 2540 2012 2 2.39615e+01 7.58083e-01 1905 2012 3 2.48264e+01 6.44369e-01 2864 2012 4 2.59008e+01 1.00184e+00 2260 2012 5 2.69431e+01 1.28815e+00 2345 2012 6 2.89261e+01 1.25233e+00 1858 2012 7 2.90316e+01 9.73507e-01 2668 2012 8 2.99811e+01 1.28385e+00 2199 2012 9 2.95401e+01 1.04958e+00 1807 2012 10 2.77881e+01 1.33730e+00 2225 2012 11 2.60934e+01 1.04586e+00 2498 2012 12 2.47996e+01 8.76917e-01 1951 2013 1 2.39888e+01 6.12680e-01 1916 2013 2 2.37940e+01 7.00003e-01 2505 2013 3 2.31942e+01 9.73569e-01 2439 2013 4 2.57889e+01 1.61925e+00 2676 2013 5 2.68246e+01 1.02654e+00 3074 2013 6 2.81973e+01 1.15737e+00 2315 2013 7 2.92586e+01 1.21588e+00 2084 2013 8 2.98198e+01 8.10674e-01 1638 2013 9 2.92020e+01 7.71186e-01 1602 2013 10 2.86164e+01 8.98317e-01 2385 2013 11 2.67975e+01 1.07513e+00 1762 2013 12 2.53799e+01 7.01379e-01 1899 2014 1 2.36520e+01 1.33687e+00 1563 2014 2 2.46875e+01 8.15174e-01 2956 2014 3 2.45617e+01 7.40137e-01 2995 2014 4 2.58171e+01 9.65472e-01 2609 2014 5 2.67458e+01 1.00791e+00 2496 2014 6 2.95110e+01 1.28871e+00 2021 2014 7 2.99451e+01 1.04742e+00 2600 2014 8 3.08354e+01 9.57962e-01 2571 2014 9 2.99210e+01 1.16030e+00 1573 2014 10 2.81311e+01 1.17013e+00 2187 2014 11 2.56525e+01 9.09284e-01 2570 2014 12 2.47995e+01 9.35363e-01 2175 2015 1 2.42312e+01 1.01493e+00 2062 2015 2 2.27792e+01 8.38401e-01 2436 2015 3 2.52468e+01 1.27007e+00 3599 2015 4 2.64832e+01 1.32669e+00 3136 2015 5 2.75333e+01 1.16298e+00 3273 2015 6 2.93954e+01 1.06257e+00 1960 2015 7 2.99450e+01 1.05156e+00 2748 2015 8 3.06827e+01 9.45122e-01 2602 2015 9 3.05694e+01 1.23237e+00 1714 2015 10 2.84805e+01 1.29002e+00 2278 2015 11 2.73822e+01 1.03620e+00 2776 2015 12 2.57634e+01 5.00657e-01 1884 2016 1 2.49769e+01 1.36260e+00 855 2016 2 2.31244e+01 9.63120e-01 1402 2016 3 2.43957e+01 1.55079e+00 1846 2016 4 2.59796e+01 1.12232e+00 2815 2016 5 2.78111e+01 1.35598e+00 3329 2016 6 2.94518e+01 8.54141e-01 1944 2016 7 3.02316e+01 9.87813e-01 2607 2016 8 3.01325e+01 9.67201e-01 1621 2016 9 2.99535e+01 1.06042e+00 2448 2016 10 2.86375e+01 8.67492e-01 2216 2016 11 2.64536e+01 9.49506e-01 2792 2016 12 2.55797e+01 7.53889e-01 2278 2017 1 2.43432e+01 8.11559e-01 2471 2017 2 2.38504e+01 6.56847e-01 3144 2017 3 2.42767e+01 1.02978e+00 3250 2017 4 2.54987e+01 7.60586e-01 2126 2017 5 2.73495e+01 1.03520e+00 2906 2017 6 2.89075e+01 1.39424e+00 1511 2017 7 2.98574e+01 1.02403e+00 2107 2017 8 3.05373e+01 1.27971e+00 2383 2017 9 2.98843e+01 9.37149e-01 1942 2017 10 2.83718e+01 9.73821e-01 1813 2017 11 2.59780e+01 7.57579e-01 3384 2017 12 2.43931e+01 1.16353e+00 3566 2018 1 2.21849e+01 1.55300e+00 1296 2018 2 2.42738e+01 1.01720e+00 2905 2018 3 2.46357e+01 9.97048e-01 2994 2018 4 2.60393e+01 1.07131e+00 3058 2018 5 2.61210e+01 8.28891e-01 1415 2018 6 2.92887e+01 1.22954e+00 1621 2018 7 3.04443e+01 1.02633e+00 2132 2018 8 3.00862e+01 8.43885e-01 2404 2018 9 2.99146e+01 8.86316e-01 2284 2018 10 2.83017e+01 8.46768e-01 2727 2018 11 2.67064e+01 1.26526e+00 2160 2018 12 2.51257e+01 1.19458e+00 2573 2019 1 2.37520e+01 1.09762e+00 2445 2019 2 2.49673e+01 1.16346e+00 3075 2019 3 2.56731e+01 1.08554e+00 3083 2019 4 2.64103e+01 6.51840e-01 3167 2019 5 2.81163e+01 1.37029e+00 3164 2019 6 2.98916e+01 1.17655e+00 2675 2019 7 3.02275e+01 1.14966e+00 2086 2019 8 3.07608e+01 8.29854e-01 2055 2019 9 2.93159e+01 1.07009e+00 2416 2019 10 2.84424e+01 9.70669e-01 2447 2019 11 2.71737e+01 1.03341e+00 2708 2019 12 2.51996e+01 7.45985e-01 2108 2020 1 2.42803e+01 9.02285e-01 2362 2020 2 2.45247e+01 9.75213e-01 2411 2020 3 2.53765e+01 7.47727e-01 3648 2020 4 2.73806e+01 1.13209e+00 2923 2020 5 2.72003e+01 1.06411e+00 2178 2020 6 2.91422e+01 1.00907e+00 1841 2020 7 3.02700e+01 1.16082e+00 2330 2020 8 3.05691e+01 1.12786e+00 2505 2020 9 3.00787e+01 8.91132e-01 2041 2020 10 2.89579e+01 1.09187e+00 1342 2020 11 2.65675e+01 7.67613e-01 2209 2020 12 2.43749e+01 1.28633e+00 2845 2021 1 2.28784e+01 8.26281e-01 2296 2021 2 2.38254e+01 1.41338e+00 2682 2021 3 2.46161e+01 6.76993e-01 3557 2021 4 2.58583e+01 7.71480e-01 2811 2021 5 2.72341e+01 1.24971e+00 2840 2021 6 2.81974e+01 1.19355e+00 1692 2021 7 2.96433e+01 1.15091e+00 2743 2021 8 2.99804e+01 1.33271e+00 2212 2021 9 3.02143e+01 1.04405e+00 2949 2021 10 2.89035e+01 8.75910e-01 1995 2021 11 2.59518e+01 9.70948e-01 2348 2021 12 2.53121e+01 6.43052e-01 3100 2022 1 2.43953e+01 8.34050e-01 2278 2022 2 2.39265e+01 1.20285e+00 2620 2022 3 2.55299e+01 7.69614e-01 3464 2022 4 2.59455e+01 6.89244e-01 1649 2022 5 2.76891e+01 9.57087e-01 2727 2022 6 2.93506e+01 1.34517e+00 2454 2022 7 3.03499e+01 7.48234e-01 2638 2022 8 3.03799e+01 9.72584e-01 2247 2022 9 3.07731e+01 9.08959e-01 2449 2022 10 2.80427e+01 8.43952e-01 2593 2022 11 2.72348e+01 6.43808e-01 2556 2022 12 2.57752e+01 9.77638e-01 2783 2023 1 2.46120e+01 1.01265e+00 3129 2023 2 2.48841e+01 8.81653e-01 3263 2023 3 2.55969e+01 8.02749e-01 3240 2023 4 2.71738e+01 8.70745e-01 2672 2023 5 2.85077e+01 9.97711e-01 2969 2023 6 3.01406e+01 9.98401e-01 2340 2023 7 3.12472e+01 8.64879e-01 2665 2023 8 3.11820e+01 1.06962e+00 2132 2023 9 3.07009e+01 1.03207e+00 2212 2023 10 2.88676e+01 1.20657e+00 2468 2023 11 2.68780e+01 9.33851e-01 2320 2023 12 2.56577e+01 1.27264e+00 1397 2024 1 2.45244e+01 6.24189e-01 1807 2024 2 2.29093e+01 6.51372e-01 2647 2024 3 2.55562e+01 7.12595e-01 2111 2024 4 2.43267e+01 9.89196e-01 320