YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.45364e+01 2.55355e-01 118 2000 3 2.45295e+01 3.81779e-01 451 2000 4 2.50011e+01 7.94646e-01 644 2000 5 2.69449e+01 7.84517e-01 549 2000 6 2.84238e+01 7.66676e-01 250 2000 7 2.95713e+01 1.24140e+00 496 2000 8 2.89237e+01 7.64445e-01 320 2000 9 2.85962e+01 1.00388e+00 587 2000 10 2.80706e+01 3.03489e-01 410 2000 11 2.62093e+01 7.58421e-01 580 2000 12 2.46389e+01 1.02788e+00 320 2001 1 2.35686e+01 1.34457e+00 517 2001 2 2.36433e+01 1.10046e+00 726 2001 3 2.39578e+01 7.51083e-01 742 2001 4 2.60285e+01 9.16834e-01 765 2001 5 2.55695e+01 1.04346e+00 334 2001 6 2.78709e+01 1.10863e+00 149 2001 7 2.80798e+01 1.30979e+00 414 2001 8 2.90421e+01 6.25684e-01 507 2001 9 2.86514e+01 1.61903e+00 314 2001 10 2.79510e+01 5.74736e-01 458 2001 11 2.66023e+01 7.02387e-01 372 2001 12 2.53627e+01 9.20353e-01 567 2002 1 2.34993e+01 1.10931e+00 443 2002 2 2.40400e+01 1.06342e+00 353 2002 3 2.54003e+01 1.47743e+00 405 2002 4 2.65360e+01 4.63973e-01 507 2002 5 2.70490e+01 6.54408e-01 697 2002 6 2.77866e+01 3.05378e-01 165 2002 7 2.89147e+01 1.09971e+00 1880 2002 8 2.95607e+01 8.08807e-01 1789 2002 9 2.86231e+01 8.92033e-01 1287 2002 10 2.81307e+01 6.42136e-01 2825 2002 11 2.69723e+01 1.19876e+00 2287 2002 12 2.53770e+01 1.00748e+00 2079 2003 1 2.32614e+01 9.24326e-01 2321 2003 2 2.23832e+01 8.81746e-01 2526 2003 3 2.55665e+01 9.67448e-01 2445 2003 4 2.57791e+01 9.07763e-01 2204 2003 5 2.70063e+01 1.13876e+00 2772 2003 6 2.85326e+01 9.95212e-01 1657 2003 7 2.84865e+01 1.28347e+00 1594 2003 8 2.97059e+01 8.74573e-01 1595 2003 9 2.93110e+01 8.92242e-01 1644 2003 10 2.84793e+01 1.09133e+00 2327 2003 11 2.67729e+01 8.21350e-01 2251 2003 12 2.48419e+01 1.20636e+00 1640 2004 1 2.52452e+01 9.43449e-01 2542 2004 2 2.40718e+01 1.10728e+00 2037 2004 3 2.44675e+01 1.14826e+00 2410 2004 4 2.42657e+01 8.70181e-01 2455 2004 5 2.60104e+01 9.51890e-01 2528 2004 6 2.83823e+01 1.30376e+00 2298 2004 7 2.91740e+01 1.03297e+00 1684 2004 8 2.97908e+01 1.23013e+00 2038 2004 9 2.91399e+01 1.28713e+00 1813 2004 10 2.79185e+01 1.15030e+00 2422 2004 11 2.67809e+01 7.54544e-01 2547 2004 12 2.55814e+01 1.32575e+00 1868 2005 1 2.42789e+01 8.42153e-01 2802 2005 2 2.34516e+01 9.71700e-01 1756 2005 3 2.40503e+01 9.53454e-01 2358 2005 4 2.45269e+01 9.01898e-01 2813 2005 5 2.63380e+01 1.61594e+00 2701 2005 6 2.80245e+01 9.08286e-01 1591 2005 7 2.91876e+01 9.28115e-01 2079 2005 8 3.02030e+01 1.08063e+00 1981 2005 9 2.92089e+01 1.14123e+00 1875 2005 10 2.79538e+01 7.30232e-01 1850 2005 11 2.57063e+01 8.80538e-01 2541 2005 12 2.41948e+01 1.26642e+00 2484 2006 1 2.39148e+01 1.17981e+00 2430 2006 2 2.37436e+01 8.37963e-01 2163 2006 3 2.50149e+01 1.02251e+00 2927 2006 4 2.58441e+01 1.09558e+00 3426 2006 5 2.69504e+01 9.20089e-01 2738 2006 6 2.85359e+01 1.02394e+00 2065 2006 7 2.87066e+01 1.13886e+00 1286 2006 8 2.95987e+01 9.82395e-01 1722 2006 9 3.00473e+01 7.94875e-01 2311 2006 10 2.86571e+01 8.61090e-01 2397 2006 11 2.63336e+01 8.84869e-01 1390 2006 12 2.52166e+01 7.89192e-01 1015 2007 1 2.49385e+01 6.57605e-01 1789 2007 2 2.41469e+01 9.26213e-01 1458 2007 3 2.46971e+01 7.62657e-01 2224 2007 4 2.50530e+01 1.05558e+00 2827 2007 5 2.69738e+01 9.58024e-01 2492 2007 6 2.78890e+01 1.52201e+00 2022 2007 7 3.01217e+01 1.03357e+00 2803 2007 8 2.97835e+01 8.88099e-01 2795 2007 9 2.97833e+01 1.02670e+00 1878 2007 10 2.83211e+01 7.54973e-01 1545 2007 11 2.68532e+01 8.01537e-01 2354 2007 12 2.56390e+01 8.84028e-01 2590 2008 1 2.41064e+01 8.49024e-01 2677 2008 2 2.42696e+01 1.06869e+00 2326 2008 3 2.46176e+01 8.80612e-01 1859 2008 4 2.53203e+01 7.82681e-01 2993 2008 5 2.68401e+01 1.11746e+00 3274 2008 6 2.80098e+01 8.65079e-01 1930 2008 7 2.85471e+01 1.27222e+00 2164 2008 8 2.96681e+01 9.68273e-01 2482 2008 9 2.84339e+01 7.92912e-01 2035 2008 10 2.79836e+01 8.65025e-01 1780 2008 11 2.58665e+01 7.98706e-01 2500 2008 12 2.42689e+01 1.13015e+00 1845 2009 1 2.32873e+01 1.28021e+00 2241 2009 2 2.30466e+01 9.04765e-01 2406 2009 3 2.40606e+01 1.00590e+00 2132 2009 4 2.50846e+01 7.31956e-01 2896 2009 5 2.65685e+01 1.23898e+00 3393 2009 6 2.87820e+01 1.41789e+00 1949 2009 7 2.91640e+01 1.18018e+00 2174 2009 8 2.95206e+01 7.70229e-01 2240 2009 9 2.98265e+01 1.19780e+00 1793 2009 10 2.90966e+01 1.15073e+00 2638 2009 11 2.71808e+01 7.42960e-01 1744 2009 12 2.53124e+01 1.00256e+00 1825 2010 1 2.43251e+01 1.28556e+00 1670 2010 2 2.28852e+01 9.53206e-01 1463 2010 3 2.31655e+01 1.22214e+00 2347 2010 4 2.46656e+01 1.17968e+00 2050 2010 5 2.70416e+01 1.08634e+00 3173 2010 6 2.96765e+01 9.93880e-01 2583 2010 7 2.90906e+01 1.11076e+00 1287 2010 8 3.00046e+01 1.03669e+00 1998 2010 9 2.95753e+01 7.72219e-01 1804 2010 10 2.78891e+01 8.85412e-01 2338 2010 11 2.66077e+01 1.07015e+00 2440 2010 12 2.44118e+01 1.57988e+00 2869 2011 1 2.29856e+01 7.53813e-01 2028 2011 2 2.21459e+01 7.88907e-01 2592 2011 3 2.44547e+01 1.33885e+00 2952 2011 4 2.60553e+01 8.31165e-01 3545 2011 5 2.71939e+01 8.21697e-01 3129 2011 6 2.82437e+01 1.34620e+00 1778 2011 7 2.94943e+01 1.06545e+00 2065 2011 8 3.02273e+01 1.10297e+00 1467 2011 9 2.99742e+01 8.32564e-01 2226 2011 10 2.81239e+01 1.11104e+00 1328 2011 11 2.61102e+01 6.25087e-01 2532 2011 12 2.47696e+01 1.08184e+00 2304 2012 1 2.43852e+01 9.06331e-01 2322 2012 2 2.43460e+01 7.90390e-01 1916 2012 3 2.48088e+01 6.44327e-01 2925 2012 4 2.60836e+01 8.85784e-01 2113 2012 5 2.67385e+01 1.01197e+00 1717 2012 6 2.85205e+01 9.11066e-01 1289 2012 7 2.85513e+01 8.29102e-01 1962 2012 8 2.92486e+01 1.20739e+00 2450 2012 9 2.91816e+01 9.35408e-01 1861 2012 10 2.83025e+01 8.04923e-01 2015 2012 11 2.70593e+01 8.59442e-01 2457 2012 12 2.54703e+01 1.01992e+00 1912 2013 1 2.45219e+01 7.67079e-01 1984 2013 2 2.45313e+01 1.02618e+00 2097 2013 3 2.39457e+01 8.08101e-01 2442 2013 4 2.59957e+01 1.49087e+00 2381 2013 5 2.64538e+01 9.07252e-01 2699 2013 6 2.79681e+01 8.90067e-01 1671 2013 7 2.90320e+01 1.11666e+00 2067 2013 8 2.90896e+01 1.02459e+00 1265 2013 9 2.89972e+01 9.17399e-01 1434 2013 10 2.83640e+01 7.56830e-01 2261 2013 11 2.73780e+01 8.11970e-01 1395 2013 12 2.60379e+01 8.56103e-01 1982 2014 1 2.50591e+01 1.12659e+00 1808 2014 2 2.48907e+01 8.47405e-01 2587 2014 3 2.46643e+01 6.29177e-01 2650 2014 4 2.57759e+01 6.59925e-01 2485 2014 5 2.67379e+01 9.11249e-01 2156 2014 6 2.86639e+01 1.13835e+00 1860 2014 7 2.96949e+01 1.22331e+00 2398 2014 8 3.07184e+01 9.91716e-01 2384 2014 9 2.94919e+01 1.23366e+00 1363 2014 10 2.83983e+01 1.32162e+00 2263 2014 11 2.64349e+01 9.35625e-01 2552 2014 12 2.54782e+01 8.75294e-01 2062 2015 1 2.50251e+01 1.09784e+00 1620 2015 2 2.39808e+01 1.15528e+00 2230 2015 3 2.51790e+01 1.23472e+00 2970 2015 4 2.65012e+01 1.16837e+00 2691 2015 5 2.72699e+01 9.16780e-01 2830 2015 6 2.89845e+01 1.01334e+00 2139 2015 7 2.96912e+01 1.26351e+00 2544 2015 8 3.03697e+01 7.60106e-01 2468 2015 9 3.05683e+01 1.04958e+00 1747 2015 10 2.84966e+01 1.09661e+00 2001 2015 11 2.75910e+01 7.81840e-01 2205 2015 12 2.62461e+01 5.06134e-01 1658 2016 1 2.63786e+01 9.58498e-01 1034 2016 2 2.49787e+01 8.20395e-01 1496 2016 3 2.53463e+01 1.26260e+00 1645 2016 4 2.60121e+01 1.15221e+00 2709 2016 5 2.74638e+01 1.15257e+00 2789 2016 6 2.84937e+01 1.09248e+00 2040 2016 7 2.95726e+01 6.77909e-01 2207 2016 8 2.96621e+01 9.15533e-01 1813 2016 9 2.94368e+01 9.22891e-01 2049 2016 10 2.86951e+01 8.68108e-01 1429 2016 11 2.71190e+01 8.67246e-01 2517 2016 12 2.63620e+01 8.26390e-01 2541 2017 1 2.51953e+01 1.08365e+00 2257 2017 2 2.45184e+01 8.72130e-01 2624 2017 3 2.53045e+01 1.02847e+00 2419 2017 4 2.58031e+01 1.09246e+00 1794 2017 5 2.71619e+01 1.06719e+00 2566 2017 6 2.83914e+01 1.15978e+00 1670 2017 7 2.94311e+01 1.03723e+00 2340 2017 8 3.00868e+01 8.39033e-01 2447 2017 9 3.00507e+01 6.51500e-01 1981 2017 10 2.85146e+01 7.32108e-01 1486 2017 11 2.68502e+01 6.52930e-01 2552 2017 12 2.57093e+01 1.18168e+00 2847 2018 1 2.42911e+01 1.07450e+00 1239 2018 2 2.43877e+01 1.00266e+00 2705 2018 3 2.52645e+01 9.49468e-01 2748 2018 4 2.58659e+01 7.16082e-01 2600 2018 5 2.54778e+01 8.78412e-01 1168 2018 6 2.87077e+01 1.35197e+00 1708 2018 7 2.97792e+01 1.22603e+00 2277 2018 8 2.97538e+01 8.45127e-01 2395 2018 9 2.94243e+01 7.71483e-01 2449 2018 10 2.80217e+01 6.22619e-01 2417 2018 11 2.73830e+01 7.09014e-01 1932 2018 12 2.58734e+01 1.42174e+00 2217 2019 1 2.44696e+01 8.03338e-01 1982 2019 2 2.54753e+01 8.85285e-01 2791 2019 3 2.60090e+01 9.57462e-01 2855 2019 4 2.58202e+01 6.93312e-01 2899 2019 5 2.73973e+01 7.64477e-01 2892 2019 6 2.96271e+01 1.24914e+00 2478 2019 7 2.98129e+01 1.23326e+00 2380 2019 8 3.03985e+01 1.00445e+00 2446 2019 9 2.94544e+01 1.05238e+00 2248 2019 10 2.85332e+01 9.18460e-01 2183 2019 11 2.75642e+01 9.86202e-01 2135 2019 12 2.58406e+01 1.08586e+00 2019 2020 1 2.51894e+01 9.35683e-01 2226 2020 2 2.53902e+01 1.24805e+00 1776 2020 3 2.52413e+01 7.97188e-01 3277 2020 4 2.72197e+01 1.24944e+00 2483 2020 5 2.72854e+01 1.07477e+00 1797 2020 6 2.89617e+01 9.26172e-01 1830 2020 7 2.96379e+01 1.22132e+00 1934 2020 8 2.97046e+01 1.22946e+00 2420 2020 9 3.00081e+01 8.14045e-01 2073 2020 10 2.86685e+01 1.22704e+00 1549 2020 11 2.70633e+01 8.25540e-01 1735 2020 12 2.55875e+01 1.11756e+00 2113 2021 1 2.42830e+01 7.54743e-01 2330 2021 2 2.44221e+01 1.10501e+00 2294 2021 3 2.46623e+01 7.14711e-01 3075 2021 4 2.61060e+01 7.55105e-01 2295 2021 5 2.72020e+01 1.02856e+00 2895 2021 6 2.79736e+01 1.10961e+00 1304 2021 7 2.93487e+01 1.21540e+00 2656 2021 8 2.97253e+01 1.11975e+00 2007 2021 9 2.99055e+01 9.96514e-01 2916 2021 10 2.89483e+01 1.01103e+00 2119 2021 11 2.70164e+01 6.78736e-01 1799 2021 12 2.59225e+01 7.82973e-01 2837 2022 1 2.54648e+01 7.88621e-01 1739 2022 2 2.45476e+01 9.38703e-01 2346 2022 3 2.54017e+01 9.50716e-01 2624 2022 4 2.57698e+01 8.20006e-01 1691 2022 5 2.73037e+01 1.12247e+00 2506 2022 6 2.89290e+01 1.24291e+00 1830 2022 7 2.95177e+01 9.00662e-01 2281 2022 8 3.01202e+01 9.96961e-01 2278 2022 9 3.06172e+01 9.79043e-01 2612 2022 10 2.81534e+01 9.08307e-01 2232 2022 11 2.73467e+01 5.66070e-01 2580 2022 12 2.61696e+01 1.01149e+00 2462 2023 1 2.56971e+01 8.33927e-01 3192 2023 2 2.52805e+01 9.52916e-01 3239 2023 3 2.55951e+01 7.24150e-01 2559 2023 4 2.66580e+01 8.15098e-01 2321 2023 5 2.79000e+01 1.31805e+00 2735 2023 6 2.91758e+01 9.99361e-01 2205 2023 7 3.06878e+01 8.65101e-01 2418 2023 8 3.09798e+01 1.03998e+00 2348 2023 9 3.05331e+01 1.13870e+00 1950 2023 10 2.91345e+01 1.00279e+00 2267 2023 11 2.76126e+01 8.46939e-01 2021 2023 12 2.61572e+01 1.05027e+00 1556 2024 1 2.52543e+01 7.79887e-01 1644 2024 2 2.38483e+01 9.06685e-01 2605 2024 3 2.55386e+01 9.67989e-01 2007 2024 4 2.53613e+01 4.72154e-01 133