YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.42517e+01 1.02133e-01 112 2000 3 2.44165e+01 9.07100e-01 733 2000 4 2.50656e+01 6.76110e-01 765 2000 5 2.67911e+01 1.30999e+00 757 2000 6 2.79146e+01 6.84963e-01 539 2000 7 2.95202e+01 1.46136e+00 727 2000 8 2.94840e+01 5.46203e-01 237 2000 9 2.89609e+01 6.77158e-01 342 2000 10 2.80654e+01 1.03559e+00 1017 2000 11 2.57524e+01 1.13640e+00 529 2000 12 2.46795e+01 9.95831e-01 519 2001 1 2.33794e+01 8.40304e-01 643 2001 2 2.36802e+01 8.49593e-01 530 2001 3 2.31919e+01 8.88269e-01 874 2001 4 2.54586e+01 1.25537e+00 745 2001 5 2.54274e+01 9.36046e-01 395 2001 6 2.74615e+01 9.37750e-01 254 2001 7 2.84450e+01 1.02774e+00 667 2001 8 2.96723e+01 3.14829e-01 275 2001 9 2.86243e+01 5.84339e-01 227 2001 10 2.78087e+01 3.67269e-01 557 2001 11 2.62661e+01 7.58939e-01 631 2001 12 2.52306e+01 5.35851e-01 667 2002 1 2.34346e+01 1.12625e+00 899 2002 2 2.35249e+01 1.13283e+00 267 2002 3 2.41125e+01 9.77091e-01 612 2002 4 2.64110e+01 7.86152e-01 836 2002 5 2.67346e+01 8.46301e-01 889 2002 6 2.67717e+01 1.97487e+00 353 2002 7 2.88437e+01 9.35016e-01 2141 2002 8 2.95612e+01 8.38338e-01 1851 2002 9 2.88207e+01 7.25152e-01 1363 2002 10 2.82963e+01 7.30811e-01 3580 2002 11 2.70561e+01 1.31678e+00 2433 2002 12 2.42556e+01 8.05905e-01 2256 2003 1 2.33079e+01 1.06217e+00 2293 2003 2 2.22796e+01 9.38666e-01 2984 2003 3 2.53152e+01 8.27091e-01 2531 2003 4 2.51690e+01 8.88812e-01 2677 2003 5 2.71186e+01 1.13980e+00 3033 2003 6 2.91310e+01 8.98883e-01 1581 2003 7 2.89510e+01 1.05730e+00 1774 2003 8 2.97547e+01 1.14594e+00 1591 2003 9 2.96346e+01 6.40090e-01 1968 2003 10 2.85900e+01 1.12328e+00 2431 2003 11 2.65193e+01 7.60913e-01 2301 2003 12 2.42107e+01 9.89959e-01 1301 2004 1 2.46948e+01 7.05661e-01 2836 2004 2 2.35949e+01 9.17963e-01 2147 2004 3 2.42190e+01 8.59268e-01 2891 2004 4 2.41169e+01 9.60378e-01 3065 2004 5 2.57504e+01 9.19073e-01 2858 2004 6 2.86734e+01 1.29058e+00 2380 2004 7 2.91478e+01 1.24349e+00 1903 2004 8 2.99588e+01 1.24067e+00 2094 2004 9 2.90454e+01 1.17017e+00 1916 2004 10 2.78512e+01 6.91326e-01 3142 2004 11 2.65471e+01 7.50283e-01 3048 2004 12 2.46680e+01 1.23876e+00 2462 2005 1 2.34542e+01 7.05694e-01 3225 2005 2 2.35777e+01 7.41318e-01 2098 2005 3 2.34103e+01 8.21317e-01 2219 2005 4 2.44966e+01 9.19487e-01 2911 2005 5 2.60360e+01 1.42084e+00 2829 2005 6 2.75981e+01 7.75880e-01 1773 2005 7 2.91309e+01 1.13945e+00 2427 2005 8 3.00550e+01 1.08479e+00 2523 2005 9 2.89361e+01 1.38811e+00 2787 2005 10 2.76216e+01 1.04786e+00 1395 2005 11 2.55316e+01 8.36307e-01 2922 2005 12 2.37944e+01 1.02012e+00 2739 2006 1 2.33972e+01 1.05987e+00 2672 2006 2 2.30828e+01 7.82595e-01 2774 2006 3 2.45337e+01 7.36677e-01 2825 2006 4 2.54963e+01 1.07805e+00 3837 2006 5 2.68491e+01 1.06869e+00 2646 2006 6 2.85069e+01 1.04919e+00 2343 2006 7 2.86536e+01 1.32309e+00 1649 2006 8 2.96144e+01 7.98559e-01 2045 2006 9 3.03454e+01 8.45735e-01 1991 2006 10 2.83513e+01 7.92499e-01 2206 2006 11 2.60348e+01 8.22424e-01 1922 2006 12 2.48557e+01 9.67551e-01 1046 2007 1 2.48862e+01 5.72307e-01 1823 2007 2 2.36349e+01 6.55770e-01 1396 2007 3 2.45052e+01 7.27182e-01 2784 2007 4 2.46139e+01 1.11754e+00 2980 2007 5 2.67413e+01 8.18582e-01 3385 2007 6 2.80683e+01 1.28252e+00 2155 2007 7 3.01088e+01 1.03361e+00 2707 2007 8 2.98748e+01 7.64803e-01 2752 2007 9 2.97238e+01 1.00668e+00 1788 2007 10 2.83302e+01 1.03272e+00 1635 2007 11 2.66464e+01 8.74246e-01 2655 2007 12 2.53414e+01 6.42450e-01 3043 2008 1 2.39333e+01 9.50466e-01 2074 2008 2 2.39925e+01 7.86894e-01 2841 2008 3 2.39658e+01 9.50039e-01 2633 2008 4 2.51012e+01 6.16833e-01 3183 2008 5 2.68448e+01 9.83936e-01 3635 2008 6 2.79260e+01 8.92918e-01 2128 2008 7 2.90063e+01 9.81210e-01 2420 2008 8 2.98783e+01 7.49988e-01 2738 2008 9 2.84878e+01 6.78397e-01 1868 2008 10 2.78804e+01 8.33803e-01 1682 2008 11 2.55497e+01 7.38919e-01 2910 2008 12 2.39391e+01 6.67365e-01 2909 2009 1 2.29686e+01 1.21030e+00 2521 2009 2 2.27902e+01 7.74253e-01 2540 2009 3 2.36978e+01 1.08348e+00 2424 2009 4 2.47878e+01 7.70841e-01 2873 2009 5 2.64151e+01 1.32227e+00 3345 2009 6 2.89307e+01 1.11972e+00 1944 2009 7 2.93111e+01 1.09450e+00 2792 2009 8 2.98403e+01 1.09734e+00 2964 2009 9 3.00858e+01 1.25527e+00 2093 2009 10 2.92827e+01 1.18189e+00 2927 2009 11 2.71229e+01 8.23592e-01 1725 2009 12 2.53794e+01 9.89771e-01 2199 2010 1 2.35129e+01 1.20773e+00 1659 2010 2 2.24718e+01 7.68683e-01 1175 2010 3 2.29041e+01 1.05164e+00 2073 2010 4 2.42551e+01 1.34588e+00 2038 2010 5 2.70131e+01 1.21048e+00 3115 2010 6 2.96843e+01 1.08923e+00 2658 2010 7 2.90724e+01 1.22079e+00 1734 2010 8 3.00809e+01 1.29617e+00 2175 2010 9 2.96534e+01 1.01423e+00 1803 2010 10 2.79688e+01 8.64810e-01 2892 2010 11 2.61004e+01 8.45125e-01 2468 2010 12 2.36032e+01 1.17746e+00 2930 2011 1 2.21493e+01 9.68072e-01 2359 2011 2 2.17554e+01 1.00753e+00 3056 2011 3 2.41180e+01 1.07993e+00 3036 2011 4 2.57073e+01 7.39618e-01 4050 2011 5 2.72128e+01 8.46854e-01 3350 2011 6 2.84911e+01 1.38174e+00 2128 2011 7 2.97043e+01 1.27424e+00 2290 2011 8 3.03393e+01 1.23351e+00 1955 2011 9 2.98084e+01 1.11399e+00 2506 2011 10 2.84000e+01 1.32992e+00 1126 2011 11 2.56653e+01 5.48984e-01 3271 2011 12 2.47020e+01 7.67155e-01 2337 2012 1 2.37961e+01 9.29189e-01 3016 2012 2 2.40575e+01 7.16175e-01 1716 2012 3 2.47338e+01 5.72005e-01 3243 2012 4 2.56504e+01 1.05432e+00 2096 2012 5 2.67733e+01 1.42151e+00 2214 2012 6 2.85578e+01 7.48040e-01 1703 2012 7 2.85798e+01 9.89588e-01 2351 2012 8 2.95593e+01 1.25791e+00 2313 2012 9 2.93397e+01 1.24275e+00 1962 2012 10 2.79716e+01 7.20861e-01 2432 2012 11 2.68286e+01 6.93838e-01 2819 2012 12 2.55516e+01 6.65200e-01 2176 2013 1 2.41093e+01 7.26133e-01 2280 2013 2 2.42072e+01 7.27482e-01 2330 2013 3 2.32751e+01 7.29231e-01 2682 2013 4 2.54220e+01 1.41087e+00 2835 2013 5 2.62875e+01 7.54443e-01 2674 2013 6 2.79093e+01 1.12190e+00 2126 2013 7 2.90180e+01 1.29639e+00 2111 2013 8 2.93967e+01 1.15221e+00 1626 2013 9 2.93063e+01 1.05460e+00 1830 2013 10 2.84796e+01 8.77835e-01 2816 2013 11 2.71978e+01 6.27932e-01 2173 2013 12 2.55243e+01 1.02517e+00 2296 2014 1 2.42426e+01 1.08934e+00 1662 2014 2 2.46298e+01 7.26077e-01 3069 2014 3 2.43285e+01 6.04669e-01 3040 2014 4 2.54163e+01 9.32332e-01 2754 2014 5 2.65141e+01 7.27442e-01 2203 2014 6 2.87092e+01 1.30567e+00 1904 2014 7 2.98235e+01 1.23259e+00 2674 2014 8 3.05999e+01 9.07691e-01 2675 2014 9 2.99061e+01 1.08273e+00 1478 2014 10 2.85831e+01 1.05358e+00 2334 2014 11 2.62752e+01 7.72793e-01 2480 2014 12 2.51570e+01 6.44573e-01 2480 2015 1 2.44939e+01 8.97979e-01 2318 2015 2 2.31830e+01 6.61384e-01 2411 2015 3 2.45354e+01 1.31998e+00 3383 2015 4 2.58956e+01 1.19127e+00 2986 2015 5 2.71581e+01 1.01002e+00 3338 2015 6 2.88174e+01 1.32635e+00 2036 2015 7 2.97025e+01 1.09978e+00 2544 2015 8 3.02885e+01 1.07662e+00 2252 2015 9 3.04649e+01 1.06175e+00 1726 2015 10 2.83883e+01 1.04923e+00 2337 2015 11 2.74917e+01 7.63263e-01 2774 2015 12 2.59994e+01 7.28407e-01 1778 2016 1 2.57692e+01 1.17575e+00 867 2016 2 2.42902e+01 7.65438e-01 1824 2016 3 2.45721e+01 1.50758e+00 1900 2016 4 2.58528e+01 8.40870e-01 3131 2016 5 2.75781e+01 1.07834e+00 3115 2016 6 2.89088e+01 1.03668e+00 2114 2016 7 2.97636e+01 9.64866e-01 2671 2016 8 2.97387e+01 8.02015e-01 1887 2016 9 2.96622e+01 7.76359e-01 2567 2016 10 2.89851e+01 6.80919e-01 2270 2016 11 2.70766e+01 8.54260e-01 2861 2016 12 2.55745e+01 9.14119e-01 2572 2017 1 2.45031e+01 9.05637e-01 2868 2017 2 2.40843e+01 7.58907e-01 3261 2017 3 2.46532e+01 1.05670e+00 3223 2017 4 2.54153e+01 7.05448e-01 2492 2017 5 2.66954e+01 1.17377e+00 3311 2017 6 2.82766e+01 1.49203e+00 1978 2017 7 2.94122e+01 1.08450e+00 2217 2017 8 3.02110e+01 7.25400e-01 2235 2017 9 2.97751e+01 7.85089e-01 2069 2017 10 2.84397e+01 9.97340e-01 1653 2017 11 2.66647e+01 6.94573e-01 3477 2017 12 2.57881e+01 6.94425e-01 4001 2018 1 2.34664e+01 1.35487e+00 1598 2018 2 2.44725e+01 9.35264e-01 2824 2018 3 2.52112e+01 9.22517e-01 3297 2018 4 2.55984e+01 8.16940e-01 2934 2018 5 2.58181e+01 7.23893e-01 1405 2018 6 2.87065e+01 1.37595e+00 1693 2018 7 3.00320e+01 1.20459e+00 2164 2018 8 2.98433e+01 1.06095e+00 2009 2018 9 2.95466e+01 7.39172e-01 2578 2018 10 2.81597e+01 6.61561e-01 3054 2018 11 2.68884e+01 7.80297e-01 2188 2018 12 2.54282e+01 1.31140e+00 2567 2019 1 2.40867e+01 9.47716e-01 2098 2019 2 2.53663e+01 8.75105e-01 3505 2019 3 2.55225e+01 8.73662e-01 3286 2019 4 2.60283e+01 6.78271e-01 3004 2019 5 2.73723e+01 7.89949e-01 3424 2019 6 2.94363e+01 1.41125e+00 2764 2019 7 2.98291e+01 9.69135e-01 2449 2019 8 3.06664e+01 1.08177e+00 2286 2019 9 2.92947e+01 8.39581e-01 2401 2019 10 2.85333e+01 8.02814e-01 2612 2019 11 2.73688e+01 1.01405e+00 2675 2019 12 2.55471e+01 7.59158e-01 2349 2020 1 2.49284e+01 7.21857e-01 2483 2020 2 2.47538e+01 1.01848e+00 2275 2020 3 2.51826e+01 6.06037e-01 3799 2020 4 2.69348e+01 8.99508e-01 3349 2020 5 2.69372e+01 1.06803e+00 2504 2020 6 2.91099e+01 9.72381e-01 1796 2020 7 2.99967e+01 1.04207e+00 2211 2020 8 3.02196e+01 1.05467e+00 2729 2020 9 2.98567e+01 8.77502e-01 2556 2020 10 2.83952e+01 1.11093e+00 1504 2020 11 2.70382e+01 7.83326e-01 1786 2020 12 2.51866e+01 9.85078e-01 2828 2021 1 2.31850e+01 9.47404e-01 2085 2021 2 2.37218e+01 1.13025e+00 3025 2021 3 2.46957e+01 5.93768e-01 3486 2021 4 2.54817e+01 8.16907e-01 2805 2021 5 2.69899e+01 9.88627e-01 2882 2021 6 2.78200e+01 8.00399e-01 1565 2021 7 2.92455e+01 1.18254e+00 3245 2021 8 2.97658e+01 1.42440e+00 2221 2021 9 3.00776e+01 9.52816e-01 2884 2021 10 2.91633e+01 7.99684e-01 1754 2021 11 2.66278e+01 8.72455e-01 2103 2021 12 2.57091e+01 8.32002e-01 3294 2022 1 2.48322e+01 7.79569e-01 2307 2022 2 2.42275e+01 8.05018e-01 2796 2022 3 2.53315e+01 6.76588e-01 3400 2022 4 2.55015e+01 5.25826e-01 2034 2022 5 2.72034e+01 1.01171e+00 2739 2022 6 2.90897e+01 1.43088e+00 1987 2022 7 2.98740e+01 8.04077e-01 2398 2022 8 3.01644e+01 8.58417e-01 2611 2022 9 3.08239e+01 9.65354e-01 2105 2022 10 2.82405e+01 8.67475e-01 2563 2022 11 2.72126e+01 6.36747e-01 2467 2022 12 2.61328e+01 7.71373e-01 2883 2023 1 2.52376e+01 7.64386e-01 3177 2023 2 2.50400e+01 8.57758e-01 3152 2023 3 2.55604e+01 8.87778e-01 3418 2023 4 2.65318e+01 7.64849e-01 2744 2023 5 2.78070e+01 1.22984e+00 3283 2023 6 2.94191e+01 1.02493e+00 2553 2023 7 3.07455e+01 1.04870e+00 2198 2023 8 3.11158e+01 1.07692e+00 2083 2023 9 3.08212e+01 7.95727e-01 2448 2023 10 2.90199e+01 1.18420e+00 2798 2023 11 2.76277e+01 7.71675e-01 1854 2023 12 2.60869e+01 1.16848e+00 1429 2024 1 2.50877e+01 6.11404e-01 1508 2024 2 2.37023e+01 5.15516e-01 2376 2024 3 2.50530e+01 8.91332e-01 2372 2024 4 2.39513e+01 7.60918e-01 384