YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.12676e+01 4.52603e-01 177 2000 3 2.35838e+01 6.03152e-01 693 2000 4 2.50539e+01 9.35803e-01 651 2000 5 2.72140e+01 1.34295e+00 889 2000 6 2.89157e+01 8.19452e-01 294 2000 7 3.13831e+01 8.82448e-01 404 2000 8 2.98996e+01 1.60407e+00 199 2000 9 2.94571e+01 8.96092e-01 446 2000 10 2.69493e+01 1.53627e+00 887 2000 11 2.44476e+01 9.01319e-01 625 2000 12 2.17728e+01 1.10410e+00 407 2001 1 1.88036e+01 7.98919e-01 490 2001 2 2.11471e+01 1.08197e+00 656 2001 3 2.32467e+01 7.73178e-01 748 2001 4 2.49903e+01 1.04484e+00 767 2001 5 2.50599e+01 9.15339e-01 512 2001 6 2.79320e+01 1.39074e+00 208 2001 7 2.87190e+01 1.47001e+00 582 2001 8 2.95960e+01 9.34709e-01 495 2001 9 2.84086e+01 7.12874e-01 398 2001 10 2.77430e+01 5.61471e-01 431 2001 11 2.35725e+01 2.51697e-01 576 2001 12 2.39878e+01 4.88602e-01 755 2002 1 2.15243e+01 9.27541e-01 743 2002 2 2.22522e+01 1.80895e-01 320 2002 3 2.23088e+01 8.63990e-01 664 2002 4 2.55468e+01 8.25549e-01 820 2002 5 2.67137e+01 4.56115e-01 889 2002 6 2.79082e+01 1.54299e+00 346 2002 7 2.98067e+01 8.45629e-01 2001 2002 8 3.00676e+01 1.13932e+00 1606 2002 9 2.92607e+01 9.67838e-01 1248 2002 10 2.85338e+01 7.58075e-01 3369 2002 11 2.62850e+01 2.20010e+00 2401 2002 12 2.19580e+01 1.13325e+00 2571 2003 1 1.90200e+01 1.31316e+00 2424 2003 2 1.97717e+01 1.31776e+00 2207 2003 3 2.33948e+01 1.41339e+00 2028 2003 4 2.35380e+01 9.54964e-01 2522 2003 5 2.75003e+01 1.24574e+00 3388 2003 6 2.96865e+01 1.10125e+00 1386 2003 7 2.92934e+01 1.09860e+00 1946 2003 8 2.99954e+01 1.16546e+00 1407 2003 9 2.99601e+01 6.88284e-01 1935 2003 10 2.85771e+01 1.19037e+00 2830 2003 11 2.52384e+01 9.37754e-01 2618 2003 12 2.08229e+01 1.23792e+00 1499 2004 1 2.00511e+01 5.05844e-01 2400 2004 2 2.08909e+01 9.42967e-01 1506 2004 3 2.22667e+01 9.17953e-01 2849 2004 4 2.36366e+01 1.01990e+00 2962 2004 5 2.58883e+01 1.15384e+00 2776 2004 6 2.85497e+01 1.06628e+00 2325 2004 7 2.83250e+01 1.54534e+00 1813 2004 8 2.98942e+01 1.22154e+00 1785 2004 9 2.89128e+01 1.20871e+00 1797 2004 10 2.76318e+01 8.35457e-01 2878 2004 11 2.48234e+01 1.13761e+00 3402 2004 12 2.23748e+01 1.77971e+00 1680 2005 1 1.98971e+01 7.30115e-01 2843 2005 2 1.99857e+01 7.53348e-01 2650 2005 3 2.20938e+01 1.60953e+00 1931 2005 4 2.40506e+01 6.65097e-01 2965 2005 5 2.60628e+01 1.42529e+00 2920 2005 6 2.84469e+01 7.37703e-01 1464 2005 7 2.95914e+01 1.14138e+00 2471 2005 8 3.06621e+01 1.06072e+00 1954 2005 9 2.95797e+01 9.56309e-01 2430 2005 10 2.75435e+01 1.39061e+00 1465 2005 11 2.42219e+01 7.53114e-01 2192 2005 12 2.26348e+01 9.12849e-01 2499 2006 1 2.09721e+01 9.06701e-01 2564 2006 2 2.04228e+01 8.90692e-01 2738 2006 3 2.23495e+01 1.17616e+00 3076 2006 4 2.48805e+01 1.52691e+00 3803 2006 5 2.72642e+01 8.64859e-01 2727 2006 6 2.89630e+01 1.05172e+00 2120 2006 7 2.88514e+01 1.12175e+00 1415 2006 8 2.98336e+01 7.55120e-01 2210 2006 9 3.02891e+01 8.94733e-01 2648 2006 10 2.82779e+01 1.19158e+00 2789 2006 11 2.36964e+01 1.56615e+00 1488 2006 12 2.21377e+01 8.16773e-01 1454 2007 1 2.28320e+01 7.17323e-01 2220 2007 2 2.09583e+01 9.84521e-01 1501 2007 3 2.22791e+01 6.36219e-01 2863 2007 4 2.40570e+01 8.60625e-01 3201 2007 5 2.65956e+01 9.16098e-01 3140 2007 6 2.81591e+01 1.29341e+00 2688 2007 7 3.06469e+01 1.05954e+00 2618 2007 8 3.05272e+01 1.00427e+00 2620 2007 9 3.03131e+01 1.03210e+00 1972 2007 10 2.79485e+01 1.24645e+00 1600 2007 11 2.42982e+01 1.18145e+00 2398 2007 12 2.36039e+01 6.56470e-01 3298 2008 1 2.10587e+01 1.08545e+00 2220 2008 2 2.27147e+01 1.04251e+00 2758 2008 3 2.29362e+01 9.46686e-01 2549 2008 4 2.47757e+01 7.86245e-01 3469 2008 5 2.73053e+01 1.28390e+00 3859 2008 6 2.86149e+01 7.78805e-01 2553 2008 7 2.97931e+01 1.08836e+00 1822 2008 8 3.03708e+01 1.08568e+00 2738 2008 9 2.88022e+01 1.01511e+00 1704 2008 10 2.77230e+01 1.11977e+00 1973 2008 11 2.27104e+01 1.35284e+00 2678 2008 12 2.11673e+01 6.18873e-01 2930 2009 1 2.09796e+01 1.36346e+00 2720 2009 2 1.90337e+01 9.58434e-01 2871 2009 3 2.11470e+01 1.18203e+00 2676 2009 4 2.45395e+01 7.53436e-01 3050 2009 5 2.67777e+01 1.44112e+00 3313 2009 6 2.95439e+01 1.15971e+00 2300 2009 7 3.00794e+01 9.03445e-01 1898 2009 8 3.03365e+01 6.55006e-01 2705 2009 9 3.04394e+01 1.18894e+00 1796 2009 10 2.90602e+01 1.84019e+00 2756 2009 11 2.51793e+01 1.42302e+00 1962 2009 12 2.33620e+01 1.28793e+00 2349 2010 1 2.02582e+01 1.49995e+00 1307 2010 2 1.97391e+01 1.12330e+00 954 2010 3 1.95252e+01 1.31588e+00 1955 2010 4 2.30089e+01 1.61883e+00 2295 2010 5 2.70286e+01 1.16865e+00 3149 2010 6 2.92020e+01 1.09772e+00 2602 2010 7 2.82835e+01 1.69278e+00 1499 2010 8 3.04428e+01 1.13399e+00 2094 2010 9 2.98476e+01 8.53008e-01 1730 2010 10 2.71142e+01 1.04981e+00 2837 2010 11 2.38890e+01 1.12244e+00 2901 2010 12 1.94783e+01 2.15607e+00 2378 2011 1 1.85424e+01 9.67876e-01 2153 2011 2 2.00158e+01 1.06975e+00 2987 2011 3 2.19178e+01 1.18559e+00 3546 2011 4 2.53159e+01 9.33414e-01 3499 2011 5 2.74475e+01 9.08207e-01 3561 2011 6 2.89946e+01 1.18065e+00 1816 2011 7 2.99978e+01 1.03091e+00 1944 2011 8 3.05993e+01 1.00308e+00 2002 2011 9 3.01361e+01 8.37909e-01 2322 2011 10 2.77096e+01 2.05337e+00 1462 2011 11 2.41792e+01 6.90633e-01 3141 2011 12 2.25209e+01 5.49221e-01 3049 2012 1 2.07650e+01 6.66411e-01 2905 2012 2 2.23415e+01 1.06889e+00 1936 2012 3 2.36682e+01 7.82396e-01 3269 2012 4 2.54101e+01 9.57284e-01 2547 2012 5 2.70087e+01 1.34924e+00 2305 2012 6 2.88869e+01 1.43717e+00 1770 2012 7 2.87790e+01 1.32761e+00 2166 2012 8 3.01132e+01 1.16286e+00 2419 2012 9 2.92251e+01 1.09207e+00 1913 2012 10 2.75010e+01 1.26558e+00 2176 2012 11 2.31692e+01 1.29296e+00 2695 2012 12 2.23020e+01 8.83242e-01 2517 2013 1 2.19708e+01 8.60795e-01 2550 2013 2 2.19735e+01 9.32470e-01 2698 2013 3 2.15530e+01 6.17374e-01 2607 2013 4 2.46338e+01 1.92603e+00 2803 2013 5 2.64782e+01 1.12400e+00 2781 2013 6 2.85474e+01 1.06689e+00 2173 2013 7 2.94032e+01 1.05974e+00 1973 2013 8 2.99147e+01 8.81086e-01 1671 2013 9 2.94422e+01 5.80975e-01 1409 2013 10 2.85676e+01 1.08190e+00 2637 2013 11 2.57607e+01 9.76168e-01 2234 2013 12 2.37678e+01 4.93158e-01 2346 2014 1 2.16138e+01 1.39715e+00 1812 2014 2 2.28152e+01 1.06456e+00 3393 2014 3 2.41940e+01 6.19525e-01 3159 2014 4 2.51371e+01 1.05939e+00 2833 2014 5 2.65176e+01 8.48633e-01 2625 2014 6 2.92114e+01 1.41712e+00 2034 2014 7 3.06903e+01 1.08925e+00 2563 2014 8 3.13954e+01 1.04003e+00 2450 2014 9 2.98128e+01 9.18400e-01 1534 2014 10 2.86190e+01 1.29688e+00 2462 2014 11 2.42640e+01 1.37918e+00 2662 2014 12 2.13008e+01 7.46897e-01 2625 2015 1 2.20026e+01 8.37671e-01 1758 2015 2 2.05255e+01 7.37275e-01 1991 2015 3 2.32716e+01 1.58148e+00 3248 2015 4 2.60292e+01 1.60652e+00 2903 2015 5 2.76583e+01 1.09631e+00 2923 2015 6 2.93980e+01 1.19855e+00 1881 2015 7 3.02567e+01 1.35486e+00 2463 2015 8 3.12808e+01 1.17399e+00 2058 2015 9 3.07542e+01 1.13797e+00 1634 2015 10 2.80780e+01 1.11823e+00 2230 2015 11 2.67204e+01 1.32083e+00 3260 2015 12 2.44189e+01 6.94608e-01 2417 2016 1 2.30504e+01 1.80858e+00 836 2016 2 2.00667e+01 9.86363e-01 1917 2016 3 2.22526e+01 1.59246e+00 1794 2016 4 2.50668e+01 6.91070e-01 3231 2016 5 2.72327e+01 1.44458e+00 3256 2016 6 2.87284e+01 1.06373e+00 2156 2016 7 2.91941e+01 8.82594e-01 2240 2016 8 2.99944e+01 8.41750e-01 2311 2016 9 2.95897e+01 1.03307e+00 1863 2016 10 2.83191e+01 1.13620e+00 2458 2016 11 2.42606e+01 1.02923e+00 3180 2016 12 2.40740e+01 1.01433e+00 2668 2017 1 2.26063e+01 9.78588e-01 2656 2017 2 2.25771e+01 8.73214e-01 3070 2017 3 2.30871e+01 7.29719e-01 3968 2017 4 2.46086e+01 7.80131e-01 2613 2017 5 2.71052e+01 1.27765e+00 3128 2017 6 2.91306e+01 1.43063e+00 1576 2017 7 3.01647e+01 9.35319e-01 2063 2017 8 3.07662e+01 1.06630e+00 1764 2017 9 3.00927e+01 9.98703e-01 1686 2017 10 2.81943e+01 1.27152e+00 1979 2017 11 2.50125e+01 6.88244e-01 3532 2017 12 2.34907e+01 1.05414e+00 3438 2018 1 2.02697e+01 1.62706e+00 1346 2018 2 2.15711e+01 1.26866e+00 3055 2018 3 2.28790e+01 6.85071e-01 3431 2018 4 2.51537e+01 1.19446e+00 3382 2018 5 2.60950e+01 9.69151e-01 1182 2018 6 2.87194e+01 1.60297e+00 1677 2018 7 3.05420e+01 1.20635e+00 1955 2018 8 3.02133e+01 1.04516e+00 2022 2018 9 2.90079e+01 1.01551e+00 2347 2018 10 2.81025e+01 6.68448e-01 2843 2018 11 2.66284e+01 9.57052e-01 2509 2018 12 2.29077e+01 1.22114e+00 2367 2019 1 2.21150e+01 1.14066e+00 2318 2019 2 2.26684e+01 1.70083e+00 3127 2019 3 2.48734e+01 9.89110e-01 3524 2019 4 2.58806e+01 1.00469e+00 2721 2019 5 2.80524e+01 9.06172e-01 3166 2019 6 3.03978e+01 1.25790e+00 2395 2019 7 3.06670e+01 1.17797e+00 1906 2019 8 3.09094e+01 9.76035e-01 1761 2019 9 2.91674e+01 1.23657e+00 2539 2019 10 2.81653e+01 1.00158e+00 2649 2019 11 2.63024e+01 1.85897e+00 2679 2019 12 2.37500e+01 8.03582e-01 2087 2020 1 2.23767e+01 1.04716e+00 3105 2020 2 2.21915e+01 9.99281e-01 2601 2020 3 2.34938e+01 1.14560e+00 4014 2020 4 2.67715e+01 1.07459e+00 3109 2020 5 2.72420e+01 1.05606e+00 2003 2020 6 2.96738e+01 8.31429e-01 1897 2020 7 3.05655e+01 1.33202e+00 1782 2020 8 3.06493e+01 1.09218e+00 2288 2020 9 3.01636e+01 9.55424e-01 2123 2020 10 2.87405e+01 1.17917e+00 1625 2020 11 2.53151e+01 1.11643e+00 2089 2020 12 2.23204e+01 1.03527e+00 2411 2021 1 2.10155e+01 1.01349e+00 2321 2021 2 2.21596e+01 1.25229e+00 3001 2021 3 2.35669e+01 7.97678e-01 3441 2021 4 2.51747e+01 1.01591e+00 3034 2021 5 2.72721e+01 9.88235e-01 2806 2021 6 2.83071e+01 9.94498e-01 1423 2021 7 2.97931e+01 1.30259e+00 2600 2021 8 3.04190e+01 1.11990e+00 1790 2021 9 3.03541e+01 1.20869e+00 2443 2021 10 2.91108e+01 1.07887e+00 2528 2021 11 2.44898e+01 1.61584e+00 2203 2021 12 2.34926e+01 7.13912e-01 3801 2022 1 2.28402e+01 1.02111e+00 2232 2022 2 2.10199e+01 1.06242e+00 2430 2022 3 2.40627e+01 1.02623e+00 3318 2022 4 2.56522e+01 6.46800e-01 1748 2022 5 2.77817e+01 1.24798e+00 2803 2022 6 2.96778e+01 1.36727e+00 2281 2022 7 3.01792e+01 8.68070e-01 2136 2022 8 3.02717e+01 1.08281e+00 2449 2022 9 3.09720e+01 1.01692e+00 2100 2022 10 2.73037e+01 8.65590e-01 2349 2022 11 2.63302e+01 6.70424e-01 2685 2022 12 2.46604e+01 1.13418e+00 2684 2023 1 2.16844e+01 6.90435e-01 3083 2023 2 2.33958e+01 1.02991e+00 3680 2023 3 2.50236e+01 8.18617e-01 3544 2023 4 2.69455e+01 8.44951e-01 2972 2023 5 2.85730e+01 1.00927e+00 3222 2023 6 3.01954e+01 9.53752e-01 2442 2023 7 3.14397e+01 9.63943e-01 2314 2023 8 3.15480e+01 1.22823e+00 2166 2023 9 3.08700e+01 7.99276e-01 2385 2023 10 2.84755e+01 1.53457e+00 2764 2023 11 2.57584e+01 7.51403e-01 2237 2023 12 2.28703e+01 2.20481e+00 1558 2024 1 2.18964e+01 9.67857e-01 1919 2024 2 2.12886e+01 5.78995e-01 2603 2024 3 2.41790e+01 1.12694e+00 2199 2024 4 2.43602e+01 6.65555e-01 249