YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.37511e+01 4.37072e-01 189 2000 3 2.46535e+01 6.13390e-01 707 2000 4 2.49678e+01 6.20126e-01 747 2000 5 2.63278e+01 1.17647e+00 575 2000 6 2.78487e+01 6.95074e-01 272 2000 7 2.96487e+01 8.49430e-01 699 2000 8 2.96916e+01 6.19382e-01 242 2000 9 2.97102e+01 1.13499e+00 482 2000 10 2.76539e+01 1.13764e+00 298 2000 11 2.55928e+01 1.01426e+00 638 2000 12 2.45021e+01 6.29012e-01 280 2001 1 2.21739e+01 7.56413e-01 481 2001 2 2.33964e+01 1.06697e+00 818 2001 3 2.36352e+01 8.26758e-01 663 2001 4 2.49608e+01 4.61265e-01 639 2001 5 2.53754e+01 1.80446e+00 559 2001 6 2.79579e+01 8.74995e-01 327 2001 7 2.76733e+01 1.70908e+00 563 2001 8 2.89591e+01 8.93321e-01 610 2001 9 2.87546e+01 1.17418e+00 256 2001 10 2.74034e+01 1.02154e+00 204 2001 11 2.48794e+01 7.64962e-01 472 2001 12 2.49889e+01 6.76302e-01 406 2002 1 2.33831e+01 5.28246e-01 702 2002 2 2.33219e+01 8.52818e-01 300 2002 3 2.43346e+01 1.03508e+00 665 2002 4 2.66583e+01 7.66248e-01 557 2002 5 2.66683e+01 1.21786e+00 768 2002 6 2.82912e+01 7.58784e-01 216 2002 7 2.88789e+01 9.91298e-01 2096 2002 8 2.93873e+01 1.08082e+00 1670 2002 9 2.88086e+01 7.27896e-01 1892 2002 10 2.79587e+01 9.12740e-01 3281 2002 11 2.64602e+01 1.48165e+00 2430 2002 12 2.41501e+01 1.25817e+00 1875 2003 1 2.20880e+01 9.62125e-01 2121 2003 2 2.25244e+01 8.58609e-01 2583 2003 3 2.51712e+01 8.05493e-01 2633 2003 4 2.49781e+01 1.14717e+00 2348 2003 5 2.74794e+01 8.42743e-01 2714 2003 6 2.81933e+01 1.00936e+00 1119 2003 7 2.85868e+01 1.13586e+00 2133 2003 8 2.97348e+01 9.54695e-01 2195 2003 9 2.92292e+01 8.44899e-01 1809 2003 10 2.84485e+01 1.00732e+00 2781 2003 11 2.64843e+01 6.52639e-01 1976 2003 12 2.37693e+01 1.17239e+00 1556 2004 1 2.37978e+01 8.95577e-01 2517 2004 2 2.34746e+01 9.38028e-01 2081 2004 3 2.42754e+01 9.87448e-01 2188 2004 4 2.42845e+01 8.70555e-01 2446 2004 5 2.60581e+01 1.08557e+00 3250 2004 6 2.86984e+01 1.02054e+00 2631 2004 7 2.92984e+01 9.41316e-01 2559 2004 8 2.99540e+01 1.11329e+00 1984 2004 9 2.89750e+01 1.34223e+00 1822 2004 10 2.76798e+01 8.43846e-01 2501 2004 11 2.62856e+01 8.97498e-01 2115 2004 12 2.46286e+01 1.37413e+00 1542 2005 1 2.32399e+01 7.58680e-01 2882 2005 2 2.28466e+01 7.71281e-01 2035 2005 3 2.33434e+01 9.22308e-01 2204 2005 4 2.41017e+01 6.40617e-01 2997 2005 5 2.58729e+01 1.20018e+00 2598 2005 6 2.80906e+01 9.98443e-01 1499 2005 7 2.90354e+01 6.94864e-01 2367 2005 8 2.98166e+01 1.18147e+00 2613 2005 9 2.91245e+01 8.69461e-01 2437 2005 10 2.74605e+01 1.23277e+00 1257 2005 11 2.55031e+01 5.88435e-01 2701 2005 12 2.38190e+01 9.42985e-01 2262 2006 1 2.28864e+01 7.54694e-01 1875 2006 2 2.28657e+01 8.15229e-01 2472 2006 3 2.41337e+01 1.06688e+00 3095 2006 4 2.56856e+01 9.50354e-01 3295 2006 5 2.70049e+01 8.40275e-01 2703 2006 6 2.83898e+01 7.02287e-01 2281 2006 7 2.89717e+01 9.57641e-01 1643 2006 8 2.96624e+01 8.98804e-01 2078 2006 9 2.99026e+01 1.04596e+00 2142 2006 10 2.83045e+01 1.17775e+00 2523 2006 11 2.56507e+01 1.31550e+00 1946 2006 12 2.46860e+01 8.91520e-01 815 2007 1 2.45404e+01 8.17497e-01 2069 2007 2 2.34659e+01 1.00247e+00 1685 2007 3 2.39713e+01 8.54392e-01 2135 2007 4 2.48016e+01 9.04416e-01 3189 2007 5 2.67407e+01 1.07912e+00 2650 2007 6 2.79748e+01 1.37622e+00 1610 2007 7 2.97120e+01 8.31206e-01 2766 2007 8 2.97948e+01 8.65803e-01 2334 2007 9 2.96661e+01 1.09560e+00 1725 2007 10 2.80681e+01 7.82223e-01 1478 2007 11 2.59635e+01 1.03765e+00 2691 2007 12 2.50335e+01 7.50074e-01 2188 2008 1 2.36325e+01 6.41906e-01 1744 2008 2 2.38934e+01 9.82100e-01 2072 2008 3 2.36856e+01 1.04559e+00 2332 2008 4 2.53718e+01 8.18731e-01 3631 2008 5 2.68512e+01 1.00722e+00 3234 2008 6 2.81356e+01 9.33168e-01 2359 2008 7 2.86061e+01 1.25358e+00 2561 2008 8 2.97335e+01 8.46193e-01 2263 2008 9 2.85336e+01 7.86245e-01 2104 2008 10 2.78228e+01 9.08889e-01 1378 2008 11 2.50766e+01 7.90133e-01 2216 2008 12 2.37405e+01 7.74713e-01 2282 2009 1 2.26117e+01 1.12746e+00 2744 2009 2 2.25976e+01 1.01241e+00 2588 2009 3 2.32623e+01 8.54682e-01 2328 2009 4 2.48422e+01 6.49692e-01 3256 2009 5 2.66636e+01 1.01628e+00 3011 2009 6 2.89829e+01 9.38847e-01 1825 2009 7 2.92907e+01 7.84657e-01 2607 2009 8 2.97492e+01 6.56167e-01 2653 2009 9 2.98905e+01 8.99121e-01 1629 2009 10 2.89472e+01 1.30808e+00 2741 2009 11 2.67340e+01 1.12773e+00 1763 2009 12 2.51200e+01 1.13151e+00 2131 2010 1 2.29764e+01 9.34934e-01 1633 2010 2 2.21016e+01 8.80427e-01 1335 2010 3 2.12420e+01 9.76692e-01 2454 2010 4 2.40086e+01 1.33347e+00 2223 2010 5 2.71773e+01 1.04915e+00 3309 2010 6 2.96486e+01 9.63274e-01 2893 2010 7 2.91511e+01 9.03282e-01 1555 2010 8 3.02356e+01 8.89944e-01 2083 2010 9 2.93973e+01 9.77760e-01 1867 2010 10 2.73889e+01 9.63860e-01 2951 2010 11 2.59426e+01 1.17967e+00 2101 2010 12 2.35275e+01 1.36948e+00 3082 2011 1 2.19395e+01 1.03471e+00 2228 2011 2 2.22158e+01 7.50571e-01 3204 2011 3 2.40470e+01 8.35525e-01 2972 2011 4 2.59804e+01 7.03672e-01 3350 2011 5 2.71729e+01 6.71947e-01 3229 2011 6 2.83645e+01 1.20211e+00 1943 2011 7 2.96677e+01 1.05255e+00 2015 2011 8 2.98644e+01 1.03080e+00 1972 2011 9 3.00898e+01 1.04390e+00 2335 2011 10 2.79503e+01 1.24925e+00 1079 2011 11 2.54400e+01 7.72373e-01 2246 2011 12 2.44037e+01 7.28314e-01 2317 2012 1 2.31377e+01 8.07958e-01 1907 2012 2 2.39040e+01 7.38491e-01 1587 2012 3 2.47494e+01 7.07825e-01 2798 2012 4 2.55292e+01 7.59295e-01 2568 2012 5 2.66246e+01 1.18164e+00 1988 2012 6 2.81082e+01 1.09932e+00 1295 2012 7 2.86780e+01 9.24023e-01 2610 2012 8 2.94626e+01 1.14606e+00 2253 2012 9 2.90841e+01 1.07458e+00 1745 2012 10 2.77486e+01 9.99479e-01 1945 2012 11 2.62233e+01 1.17186e+00 2123 2012 12 2.51124e+01 8.96205e-01 1999 2013 1 2.40602e+01 6.16335e-01 2300 2013 2 2.40411e+01 8.70226e-01 2507 2013 3 2.36239e+01 9.71196e-01 2451 2013 4 2.53548e+01 1.27108e+00 2536 2013 5 2.66967e+01 4.89804e-01 2769 2013 6 2.81413e+01 7.49385e-01 1648 2013 7 2.86049e+01 1.30712e+00 1952 2013 8 2.92160e+01 6.82019e-01 1719 2013 9 2.92379e+01 5.84021e-01 1495 2013 10 2.83875e+01 1.03307e+00 2497 2013 11 2.67790e+01 8.50641e-01 1115 2013 12 2.54107e+01 8.82262e-01 2058 2014 1 2.44971e+01 9.89310e-01 1880 2014 2 2.47856e+01 9.95848e-01 2827 2014 3 2.44709e+01 7.20323e-01 2814 2014 4 2.57320e+01 1.14351e+00 2759 2014 5 2.67224e+01 6.74568e-01 1998 2014 6 2.84619e+01 1.16199e+00 2310 2014 7 2.96687e+01 1.01978e+00 2410 2014 8 3.05642e+01 8.86852e-01 3243 2014 9 2.97421e+01 1.01960e+00 1465 2014 10 2.82264e+01 1.27340e+00 2635 2014 11 2.59851e+01 8.52034e-01 2526 2014 12 2.45705e+01 7.36877e-01 2198 2015 1 2.43755e+01 9.08386e-01 2185 2015 2 2.32640e+01 8.89449e-01 2247 2015 3 2.48850e+01 8.51228e-01 3219 2015 4 2.61234e+01 1.15146e+00 2639 2015 5 2.73691e+01 8.76140e-01 3144 2015 6 2.88918e+01 1.00939e+00 1833 2015 7 2.96185e+01 1.15766e+00 2122 2015 8 3.04974e+01 7.94583e-01 2279 2015 9 3.04439e+01 9.51902e-01 1410 2015 10 2.84456e+01 1.28137e+00 2098 2015 11 2.75292e+01 8.72974e-01 2594 2015 12 2.56542e+01 6.82176e-01 1900 2016 1 2.48910e+01 1.36892e+00 1282 2016 2 2.41716e+01 8.30565e-01 1730 2016 3 2.43106e+01 1.20080e+00 1350 2016 4 2.57727e+01 6.79260e-01 2995 2016 5 2.72552e+01 1.14393e+00 3255 2016 6 2.89962e+01 7.51360e-01 2123 2016 7 2.97769e+01 7.53764e-01 2599 2016 8 3.00643e+01 9.90572e-01 1924 2016 9 2.97849e+01 1.03773e+00 2493 2016 10 2.85432e+01 8.39614e-01 1849 2016 11 2.65713e+01 9.16139e-01 2271 2016 12 2.55826e+01 6.70175e-01 2346 2017 1 2.40868e+01 7.81742e-01 2070 2017 2 2.38743e+01 6.90932e-01 2952 2017 3 2.44348e+01 9.39806e-01 2623 2017 4 2.54343e+01 6.35959e-01 1836 2017 5 2.69360e+01 1.16342e+00 2676 2017 6 2.84532e+01 1.15128e+00 1568 2017 7 2.97121e+01 7.76931e-01 2221 2017 8 3.02374e+01 8.40751e-01 2559 2017 9 2.96607e+01 1.21833e+00 2571 2017 10 2.81090e+01 8.71558e-01 1796 2017 11 2.63096e+01 8.06109e-01 2660 2017 12 2.52685e+01 9.16090e-01 3099 2018 1 2.33976e+01 1.34438e+00 1298 2018 2 2.42957e+01 9.22784e-01 2920 2018 3 2.47784e+01 8.80290e-01 3454 2018 4 2.55741e+01 8.32366e-01 3355 2018 5 2.55422e+01 1.20927e+00 778 2018 6 2.84666e+01 9.26313e-01 1873 2018 7 2.98641e+01 1.29053e+00 2018 2018 8 2.97950e+01 8.48124e-01 3077 2018 9 2.99506e+01 9.08927e-01 2582 2018 10 2.81352e+01 7.25634e-01 2940 2018 11 2.68984e+01 9.18351e-01 2042 2018 12 2.48328e+01 1.48260e+00 2103 2019 1 2.40629e+01 1.07870e+00 2261 2019 2 2.49004e+01 1.12854e+00 2989 2019 3 2.56873e+01 9.29401e-01 3043 2019 4 2.61020e+01 6.11165e-01 3015 2019 5 2.73610e+01 9.10163e-01 2761 2019 6 2.94792e+01 1.10130e+00 2446 2019 7 2.99960e+01 1.07477e+00 2124 2019 8 3.01107e+01 1.05109e+00 2063 2019 9 2.93935e+01 1.17011e+00 2189 2019 10 2.83828e+01 9.09605e-01 2589 2019 11 2.72035e+01 1.23316e+00 2531 2019 12 2.50243e+01 1.00814e+00 2321 2020 1 2.45857e+01 8.85193e-01 2821 2020 2 2.46658e+01 1.02435e+00 2026 2020 3 2.50528e+01 7.46454e-01 3325 2020 4 2.65981e+01 9.97418e-01 2593 2020 5 2.69851e+01 1.29306e+00 1980 2020 6 2.91688e+01 8.12041e-01 1607 2020 7 2.97206e+01 9.81973e-01 2373 2020 8 3.01085e+01 7.80420e-01 2195 2020 9 2.99588e+01 9.00930e-01 2020 2020 10 2.86703e+01 1.26447e+00 1747 2020 11 2.65595e+01 1.01859e+00 1814 2020 12 2.50034e+01 1.26051e+00 2315 2021 1 2.34728e+01 6.97909e-01 2454 2021 2 2.38895e+01 1.14788e+00 2641 2021 3 2.46568e+01 8.05111e-01 3044 2021 4 2.56564e+01 1.00063e+00 2748 2021 5 2.70675e+01 9.76035e-01 3077 2021 6 2.78307e+01 1.12189e+00 1280 2021 7 2.90680e+01 1.28403e+00 2694 2021 8 2.99363e+01 8.59004e-01 2280 2021 9 2.99665e+01 1.05233e+00 2526 2021 10 2.89366e+01 6.42375e-01 2337 2021 11 2.62377e+01 9.72406e-01 2008 2021 12 2.55954e+01 7.25138e-01 3078 2022 1 2.46148e+01 9.49988e-01 2301 2022 2 2.40346e+01 8.36053e-01 2729 2022 3 2.55197e+01 6.31790e-01 3040 2022 4 2.59590e+01 9.73573e-01 1260 2022 5 2.74843e+01 9.63987e-01 3301 2022 6 2.89335e+01 1.03970e+00 2341 2022 7 2.96458e+01 8.20764e-01 2415 2022 8 3.01636e+01 7.04913e-01 2587 2022 9 3.05781e+01 1.07863e+00 2498 2022 10 2.77902e+01 9.59962e-01 2283 2022 11 2.71513e+01 6.28247e-01 2432 2022 12 2.57572e+01 8.20685e-01 2013 2023 1 2.47589e+01 7.02666e-01 3027 2023 2 2.49058e+01 8.50264e-01 3100 2023 3 2.53886e+01 7.70488e-01 3031 2023 4 2.67230e+01 7.81857e-01 2751 2023 5 2.76533e+01 1.08101e+00 2382 2023 6 2.93806e+01 9.28126e-01 1509 2023 7 3.06240e+01 1.02131e+00 2327 2023 8 3.09468e+01 6.61071e-01 1923 2023 9 3.05796e+01 9.21592e-01 1979 2023 10 2.90034e+01 1.45958e+00 2324 2023 11 2.68901e+01 8.51874e-01 1876 2023 12 2.53623e+01 8.89898e-01 1183 2024 1 2.45112e+01 7.27483e-01 1654 2024 2 2.32182e+01 7.33643e-01 2169 2024 3 2.50188e+01 7.77783e-01 1829 2024 4 2.48722e+01 9.80227e-02 64