YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.07599e+01 5.85266e-01 127 2000 3 2.38269e+01 1.07896e+00 867 2000 4 2.47715e+01 1.22394e+00 663 2000 5 2.71324e+01 1.17637e+00 688 2000 6 2.86820e+01 8.26719e-01 251 2000 7 3.03609e+01 1.04013e+00 461 2000 8 2.90564e+01 7.76220e-01 243 2000 9 2.89851e+01 1.39245e+00 162 2000 10 2.64634e+01 1.72091e+00 976 2000 11 2.43938e+01 5.70857e-01 706 2000 12 2.12243e+01 7.79496e-01 497 2001 1 1.80493e+01 9.74571e-01 246 2001 2 2.11782e+01 1.63029e+00 668 2001 3 2.32750e+01 6.27412e-01 556 2001 4 2.50961e+01 1.65116e+00 754 2001 5 2.51311e+01 1.00281e+00 433 2001 6 2.88548e+01 9.13837e-01 314 2001 7 2.90271e+01 1.51797e+00 530 2001 8 2.92955e+01 9.50320e-01 366 2001 9 2.88164e+01 5.89995e-01 325 2001 10 2.76228e+01 5.39826e-01 481 2001 11 2.32873e+01 4.26027e-01 861 2001 12 2.36951e+01 8.31391e-01 900 2002 1 2.12001e+01 1.33853e+00 715 2002 2 2.24855e+01 8.91112e-01 384 2002 3 2.24708e+01 1.53931e+00 577 2002 4 2.61621e+01 1.35381e+00 816 2002 5 2.71452e+01 1.00203e+00 753 2002 6 2.90631e+01 8.82928e-01 206 2002 7 2.94585e+01 1.39976e+00 2127 2002 8 3.00128e+01 1.13384e+00 1692 2002 9 2.91044e+01 1.03075e+00 1615 2002 10 2.86547e+01 8.12147e-01 3262 2002 11 2.53927e+01 2.64986e+00 2396 2002 12 2.13034e+01 9.53053e-01 2262 2003 1 1.80570e+01 1.44863e+00 2513 2003 2 1.95619e+01 1.45635e+00 1900 2003 3 2.49739e+01 9.12237e-01 2032 2003 4 2.43864e+01 1.00130e+00 2753 2003 5 2.77883e+01 1.19084e+00 2988 2003 6 2.97202e+01 1.06554e+00 1428 2003 7 2.93368e+01 1.32643e+00 1708 2003 8 3.05804e+01 8.28969e-01 1459 2003 9 3.00332e+01 8.98992e-01 1750 2003 10 2.83063e+01 1.44051e+00 3289 2003 11 2.48505e+01 1.04136e+00 2684 2003 12 2.01322e+01 1.33585e+00 1862 2004 1 1.94856e+01 7.36070e-01 2897 2004 2 2.03439e+01 7.40713e-01 2008 2004 3 2.23847e+01 8.69921e-01 2900 2004 4 2.34803e+01 8.94098e-01 2823 2004 5 2.63364e+01 1.34464e+00 3335 2004 6 2.95477e+01 8.75610e-01 2152 2004 7 3.01590e+01 8.32282e-01 1919 2004 8 3.01770e+01 1.40019e+00 1692 2004 9 2.91547e+01 1.28395e+00 2073 2004 10 2.73635e+01 8.92974e-01 2651 2004 11 2.44240e+01 9.98648e-01 3229 2004 12 2.16331e+01 1.97881e+00 2172 2005 1 1.95260e+01 8.83464e-01 3203 2005 2 1.95556e+01 7.04683e-01 2765 2005 3 2.17915e+01 1.58036e+00 2265 2005 4 2.40804e+01 7.28362e-01 3081 2005 5 2.62554e+01 1.48445e+00 2885 2005 6 2.87789e+01 1.04517e+00 1284 2005 7 2.95902e+01 1.35598e+00 2272 2005 8 3.10093e+01 1.44639e+00 2561 2005 9 3.00617e+01 1.29484e+00 2196 2005 10 2.71648e+01 1.77137e+00 1837 2005 11 2.41742e+01 7.04507e-01 2740 2005 12 2.18515e+01 1.14732e+00 2512 2006 1 2.04248e+01 8.46572e-01 2513 2006 2 2.01596e+01 1.13378e+00 2887 2006 3 2.24877e+01 1.24775e+00 2893 2006 4 2.49734e+01 1.65414e+00 3394 2006 5 2.76497e+01 1.19494e+00 2571 2006 6 2.96553e+01 9.94852e-01 2280 2006 7 2.90714e+01 1.15196e+00 1288 2006 8 3.00091e+01 7.23539e-01 1862 2006 9 3.03190e+01 8.64500e-01 2496 2006 10 2.78862e+01 1.48768e+00 3061 2006 11 2.31391e+01 1.71038e+00 1891 2006 12 2.17384e+01 7.75400e-01 1723 2007 1 2.25716e+01 6.60480e-01 2702 2007 2 2.01563e+01 9.47650e-01 1917 2007 3 2.22185e+01 6.88592e-01 2930 2007 4 2.40469e+01 8.14387e-01 3057 2007 5 2.64186e+01 9.92524e-01 3146 2007 6 2.85044e+01 1.54895e+00 1906 2007 7 3.10272e+01 9.92205e-01 1944 2007 8 3.07506e+01 9.43014e-01 2686 2007 9 3.03876e+01 1.18727e+00 1796 2007 10 2.79289e+01 1.24961e+00 1674 2007 11 2.38349e+01 1.19761e+00 3019 2007 12 2.34120e+01 8.10697e-01 3220 2008 1 2.01734e+01 1.08558e+00 2531 2008 2 2.23458e+01 1.25642e+00 2606 2008 3 2.27586e+01 7.89274e-01 2417 2008 4 2.47843e+01 8.26382e-01 3393 2008 5 2.73614e+01 1.35887e+00 3540 2008 6 2.89757e+01 9.62451e-01 2221 2008 7 2.95622e+01 1.38100e+00 1705 2008 8 3.04505e+01 9.29826e-01 2212 2008 9 2.90653e+01 1.02483e+00 1631 2008 10 2.75562e+01 1.45989e+00 1891 2008 11 2.19060e+01 1.38620e+00 3075 2008 12 2.07716e+01 7.35270e-01 3034 2009 1 2.04180e+01 1.58056e+00 2982 2009 2 1.89469e+01 1.10145e+00 3042 2009 3 2.10736e+01 1.36523e+00 3223 2009 4 2.46898e+01 6.81205e-01 2961 2009 5 2.69639e+01 1.56532e+00 3373 2009 6 2.98095e+01 1.39889e+00 2106 2009 7 3.05363e+01 9.95238e-01 2250 2009 8 3.01390e+01 9.90094e-01 2375 2009 9 3.06750e+01 9.87752e-01 1413 2009 10 2.85132e+01 1.96626e+00 2674 2009 11 2.47329e+01 1.66642e+00 1858 2009 12 2.26246e+01 1.65101e+00 2444 2010 1 1.73328e+01 1.88813e+00 1015 2010 2 1.78705e+01 8.73127e-01 1009 2010 3 1.87903e+01 1.34427e+00 2070 2010 4 2.30906e+01 1.58985e+00 2826 2010 5 2.74561e+01 1.34766e+00 3387 2010 6 3.04071e+01 1.25807e+00 2372 2010 7 2.95987e+01 1.16833e+00 2428 2010 8 3.05817e+01 1.49578e+00 1623 2010 9 2.97488e+01 1.22172e+00 2084 2010 10 2.65983e+01 1.14758e+00 2985 2010 11 2.38002e+01 1.61695e+00 2990 2010 12 1.86893e+01 2.64204e+00 2892 2011 1 1.78552e+01 8.27001e-01 2364 2011 2 2.00471e+01 1.13775e+00 2593 2011 3 2.27376e+01 1.11042e+00 3778 2011 4 2.59498e+01 9.46623e-01 3709 2011 5 2.82998e+01 7.78146e-01 3253 2011 6 2.92141e+01 1.06781e+00 2208 2011 7 3.04298e+01 1.13528e+00 1958 2011 8 3.07273e+01 9.83988e-01 1735 2011 9 3.03268e+01 9.63027e-01 2292 2011 10 2.74940e+01 1.95829e+00 1486 2011 11 2.38467e+01 7.11761e-01 3292 2011 12 2.24671e+01 6.19456e-01 3343 2012 1 2.03132e+01 9.42442e-01 2869 2012 2 2.20477e+01 1.06266e+00 1854 2012 3 2.39192e+01 7.04714e-01 3376 2012 4 2.54806e+01 1.16792e+00 2574 2012 5 2.71454e+01 1.76009e+00 2557 2012 6 2.91020e+01 1.06148e+00 1507 2012 7 2.90793e+01 1.14980e+00 2403 2012 8 3.03054e+01 1.44827e+00 2180 2012 9 2.97164e+01 9.89171e-01 1600 2012 10 2.76931e+01 1.49536e+00 2085 2012 11 2.25782e+01 1.32368e+00 2753 2012 12 2.20711e+01 9.55164e-01 2644 2013 1 2.17112e+01 8.72218e-01 2925 2013 2 2.14778e+01 8.52435e-01 2775 2013 3 2.10668e+01 7.92702e-01 2683 2013 4 2.47908e+01 1.96316e+00 3082 2013 5 2.69838e+01 9.63815e-01 2929 2013 6 2.87492e+01 1.06781e+00 1791 2013 7 2.93575e+01 1.28846e+00 2042 2013 8 3.00158e+01 1.29417e+00 1650 2013 9 2.92638e+01 9.40816e-01 1529 2013 10 2.83068e+01 1.17271e+00 2736 2013 11 2.52164e+01 1.26353e+00 2051 2013 12 2.34822e+01 5.22680e-01 2931 2014 1 2.06558e+01 1.56947e+00 1944 2014 2 2.23608e+01 1.06186e+00 2914 2014 3 2.40738e+01 6.33659e-01 3175 2014 4 2.52181e+01 1.21166e+00 2808 2014 5 2.64035e+01 8.29480e-01 2570 2014 6 2.98347e+01 1.54492e+00 1867 2014 7 3.07798e+01 9.81422e-01 2362 2014 8 3.15226e+01 9.34328e-01 2618 2014 9 2.96807e+01 1.24275e+00 1593 2014 10 2.81624e+01 1.60450e+00 2621 2014 11 2.34083e+01 1.33112e+00 2589 2014 12 2.07102e+01 8.01631e-01 2307 2015 1 2.17676e+01 9.27945e-01 2643 2015 2 1.96980e+01 6.52708e-01 2478 2015 3 2.40070e+01 1.77381e+00 3316 2015 4 2.66154e+01 1.64759e+00 3107 2015 5 2.76594e+01 1.41619e+00 2767 2015 6 2.97667e+01 1.25420e+00 1941 2015 7 3.07509e+01 9.65220e-01 1975 2015 8 3.12007e+01 9.56506e-01 2061 2015 9 3.09724e+01 1.01791e+00 1539 2015 10 2.78394e+01 1.48842e+00 2361 2015 11 2.66507e+01 1.50726e+00 3134 2015 12 2.41735e+01 6.10503e-01 2014 2016 1 2.15049e+01 2.52156e+00 933 2016 2 1.95862e+01 1.01299e+00 1892 2016 3 2.29621e+01 1.94589e+00 1468 2016 4 2.53747e+01 6.19348e-01 3120 2016 5 2.77207e+01 1.61023e+00 3086 2016 6 2.96809e+01 9.93614e-01 2075 2016 7 3.08037e+01 1.00802e+00 2036 2016 8 3.07643e+01 8.81826e-01 1576 2016 9 3.04682e+01 1.08474e+00 1815 2016 10 2.80993e+01 1.38363e+00 2039 2016 11 2.39066e+01 1.15122e+00 3460 2016 12 2.40331e+01 8.32278e-01 3065 2017 1 2.19395e+01 9.91392e-01 3232 2017 2 2.23981e+01 8.50382e-01 2872 2017 3 2.29374e+01 9.77613e-01 3917 2017 4 2.46910e+01 7.18414e-01 1921 2017 5 2.73813e+01 1.13347e+00 3075 2017 6 2.91264e+01 1.43994e+00 1529 2017 7 3.01586e+01 8.73382e-01 1599 2017 8 3.08847e+01 1.04339e+00 2228 2017 9 3.01056e+01 1.00415e+00 2145 2017 10 2.78567e+01 1.44699e+00 2302 2017 11 2.48494e+01 7.08250e-01 3290 2017 12 2.31897e+01 1.28763e+00 3565 2018 1 1.96960e+01 1.69975e+00 1344 2018 2 2.22906e+01 1.48088e+00 3160 2018 3 2.29197e+01 1.16521e+00 3378 2018 4 2.55769e+01 1.25637e+00 3256 2018 5 2.63480e+01 8.76365e-01 1074 2018 6 2.88158e+01 1.49135e+00 1946 2018 7 3.05656e+01 1.27205e+00 1477 2018 8 3.05830e+01 7.99149e-01 2049 2018 9 2.99369e+01 8.78697e-01 1916 2018 10 2.83541e+01 8.35960e-01 3051 2018 11 2.64558e+01 9.90590e-01 2527 2018 12 2.20592e+01 1.30923e+00 2305 2019 1 2.10802e+01 1.38684e+00 2589 2019 2 2.24950e+01 1.69296e+00 3405 2019 3 2.47124e+01 9.01726e-01 3217 2019 4 2.59556e+01 1.02065e+00 3025 2019 5 2.84844e+01 1.05216e+00 3204 2019 6 3.05741e+01 1.25421e+00 2314 2019 7 3.05176e+01 1.00024e+00 2098 2019 8 3.11085e+01 9.54529e-01 2077 2019 9 2.94590e+01 1.33613e+00 2538 2019 10 2.82608e+01 8.02392e-01 2381 2019 11 2.59297e+01 2.17094e+00 3104 2019 12 2.31323e+01 8.02688e-01 2582 2020 1 2.18274e+01 1.15445e+00 3056 2020 2 2.21025e+01 1.19860e+00 2609 2020 3 2.36837e+01 1.43277e+00 4095 2020 4 2.72687e+01 9.41209e-01 3251 2020 5 2.72852e+01 9.58489e-01 2270 2020 6 2.97529e+01 1.26519e+00 1587 2020 7 3.06820e+01 1.19880e+00 1844 2020 8 3.10455e+01 1.37026e+00 1857 2020 9 2.99940e+01 9.07857e-01 1922 2020 10 2.83880e+01 1.55775e+00 1700 2020 11 2.50570e+01 9.71246e-01 2301 2020 12 2.15336e+01 1.16593e+00 3104 2021 1 2.06855e+01 7.95031e-01 2337 2021 2 2.21152e+01 1.61793e+00 2814 2021 3 2.35841e+01 9.11800e-01 3524 2021 4 2.52834e+01 1.33594e+00 3210 2021 5 2.73589e+01 1.27600e+00 2984 2021 6 2.81951e+01 9.18028e-01 1476 2021 7 2.97976e+01 1.16971e+00 2940 2021 8 3.03021e+01 1.22136e+00 1896 2021 9 3.03697e+01 1.17695e+00 2349 2021 10 2.89182e+01 1.00717e+00 2819 2021 11 2.36734e+01 1.40726e+00 2009 2021 12 2.30896e+01 7.67373e-01 3478 2022 1 2.24310e+01 1.36411e+00 2307 2022 2 2.08498e+01 1.28402e+00 2865 2022 3 2.43532e+01 9.71025e-01 3736 2022 4 2.57421e+01 7.37657e-01 1952 2022 5 2.82578e+01 1.12245e+00 2701 2022 6 2.95825e+01 1.52327e+00 2042 2022 7 3.01616e+01 7.91534e-01 2589 2022 8 3.04390e+01 9.56903e-01 2505 2022 9 3.10294e+01 9.95409e-01 2469 2022 10 2.70594e+01 1.10830e+00 2818 2022 11 2.61805e+01 7.24860e-01 2849 2022 12 2.43608e+01 1.60730e+00 2825 2023 1 2.10405e+01 6.76397e-01 3366 2023 2 2.32447e+01 1.13847e+00 3595 2023 3 2.50541e+01 9.81246e-01 3400 2023 4 2.71451e+01 9.44637e-01 2917 2023 5 2.89143e+01 1.35679e+00 3081 2023 6 3.04609e+01 1.06306e+00 2366 2023 7 3.18367e+01 1.08378e+00 2004 2023 8 3.18805e+01 1.21119e+00 2368 2023 9 3.09007e+01 9.21107e-01 2210 2023 10 2.80685e+01 1.62820e+00 2739 2023 11 2.52689e+01 7.90316e-01 2585 2023 12 2.22231e+01 1.98426e+00 1732 2024 1 2.11121e+01 8.99478e-01 1481 2024 2 2.06299e+01 6.91932e-01 2971 2024 3 2.44933e+01 9.88284e-01 2376 2024 4 2.47350e+01 5.32186e-01 156