YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.12380e+01 7.59657e-02 64 2000 3 2.29547e+01 5.69734e-01 669 2000 4 2.34285e+01 7.61937e-01 757 2000 5 2.60478e+01 1.31449e+00 540 2000 6 2.78508e+01 1.11440e+00 448 2000 7 2.98675e+01 1.11977e+00 582 2000 8 2.91989e+01 5.35139e-01 183 2000 9 2.90437e+01 1.19413e+00 533 2000 10 2.79147e+01 9.50092e-01 712 2000 11 2.54190e+01 7.08262e-01 605 2000 12 2.31351e+01 1.57081e+00 574 2001 1 1.98051e+01 1.35209e+00 530 2001 2 2.03985e+01 1.03835e+00 309 2001 3 2.12992e+01 3.51340e-01 535 2001 4 2.43010e+01 1.68555e+00 706 2001 5 2.44947e+01 1.03467e+00 499 2001 6 2.80768e+01 1.13685e+00 257 2001 7 2.85627e+01 1.00618e+00 486 2001 8 2.93735e+01 6.92403e-01 268 2001 9 2.83812e+01 5.25393e-01 384 2001 10 2.75003e+01 5.92226e-01 283 2001 11 2.46762e+01 3.93751e-01 640 2001 12 2.43545e+01 5.59045e-01 512 2002 1 2.28680e+01 8.45332e-01 448 2002 2 2.18886e+01 1.13178e+00 279 2002 3 2.11506e+01 6.73759e-01 344 2002 4 2.55052e+01 1.06596e+00 704 2002 5 2.66404e+01 7.09892e-01 490 2002 6 2.75886e+01 9.37214e-01 342 2002 7 2.91698e+01 1.14306e+00 1687 2002 8 2.94227e+01 1.11758e+00 1034 2002 9 2.90391e+01 8.75613e-01 1044 2002 10 2.85945e+01 7.85576e-01 3141 2002 11 2.71450e+01 1.70453e+00 2196 2002 12 2.29389e+01 1.21015e+00 2315 2003 1 2.06734e+01 1.03148e+00 1894 2003 2 1.92136e+01 9.82938e-01 2246 2003 3 2.41957e+01 7.73584e-01 1669 2003 4 2.23430e+01 9.99963e-01 2596 2003 5 2.71845e+01 1.16283e+00 3076 2003 6 2.85101e+01 9.09753e-01 1519 2003 7 2.90413e+01 1.13377e+00 1625 2003 8 2.97822e+01 1.09926e+00 1439 2003 9 2.90598e+01 6.38141e-01 1787 2003 10 2.75319e+01 1.05388e+00 2640 2003 11 2.49681e+01 9.40195e-01 2656 2003 12 2.16997e+01 1.44903e+00 1696 2004 1 2.04422e+01 4.47611e-01 2795 2004 2 2.02424e+01 6.59935e-01 1840 2004 3 2.12816e+01 8.05273e-01 2634 2004 4 2.24601e+01 9.41074e-01 2525 2004 5 2.56125e+01 1.39054e+00 3130 2004 6 2.87204e+01 1.07219e+00 2479 2004 7 2.98183e+01 9.47602e-01 1595 2004 8 2.96590e+01 1.32378e+00 2374 2004 9 2.85092e+01 1.71930e+00 1954 2004 10 2.78414e+01 9.27686e-01 2690 2004 11 2.58685e+01 9.31902e-01 3011 2004 12 2.30044e+01 1.52798e+00 2136 2005 1 2.07558e+01 1.00120e+00 2783 2005 2 2.02165e+01 7.48157e-01 2514 2005 3 2.13599e+01 1.28359e+00 1946 2005 4 2.21858e+01 6.83751e-01 2770 2005 5 2.51712e+01 1.65327e+00 2932 2005 6 2.76704e+01 1.24115e+00 1180 2005 7 2.89686e+01 1.10666e+00 2152 2005 8 3.01758e+01 1.15253e+00 2057 2005 9 2.88293e+01 9.48324e-01 2208 2005 10 2.72930e+01 9.40578e-01 1889 2005 11 2.51684e+01 5.42471e-01 2296 2005 12 2.32358e+01 1.65882e+00 1986 2006 1 2.16709e+01 8.09744e-01 2735 2006 2 2.04255e+01 7.54271e-01 2524 2006 3 2.15579e+01 9.30948e-01 3145 2006 4 2.45897e+01 1.37941e+00 3299 2006 5 2.65187e+01 1.10541e+00 2402 2006 6 2.81204e+01 9.14706e-01 2462 2006 7 2.85738e+01 7.70425e-01 1688 2006 8 2.96968e+01 9.96525e-01 2377 2006 9 2.99855e+01 6.21921e-01 2039 2006 10 2.85981e+01 9.64931e-01 2658 2006 11 2.49625e+01 1.25084e+00 1328 2006 12 2.30189e+01 6.62812e-01 1881 2007 1 2.30635e+01 7.24769e-01 2320 2007 2 2.17782e+01 7.45174e-01 1712 2007 3 2.19070e+01 5.63597e-01 3190 2007 4 2.31838e+01 1.29852e+00 2971 2007 5 2.57775e+01 1.05992e+00 3025 2007 6 2.77683e+01 1.40630e+00 2140 2007 7 3.03947e+01 9.98254e-01 2189 2007 8 2.99835e+01 9.45034e-01 2807 2007 9 2.97217e+01 1.00005e+00 1635 2007 10 2.83076e+01 7.55272e-01 2038 2007 11 2.57788e+01 1.03551e+00 2786 2007 12 2.42400e+01 7.42952e-01 2816 2008 1 2.20168e+01 6.38158e-01 2728 2008 2 2.20918e+01 8.95951e-01 2280 2008 3 2.19715e+01 8.68371e-01 2420 2008 4 2.41957e+01 6.34171e-01 3483 2008 5 2.61067e+01 1.12336e+00 3330 2008 6 2.84776e+01 8.87583e-01 2136 2008 7 2.95888e+01 1.12802e+00 1292 2008 8 2.98195e+01 9.24777e-01 2195 2008 9 2.90031e+01 8.06653e-01 1740 2008 10 2.76986e+01 9.66439e-01 2014 2008 11 2.45662e+01 9.09685e-01 2936 2008 12 2.19315e+01 6.04866e-01 2920 2009 1 2.09437e+01 6.71944e-01 2532 2009 2 1.94431e+01 5.21579e-01 2663 2009 3 2.04262e+01 1.20180e+00 2866 2009 4 2.41145e+01 5.11892e-01 3084 2009 5 2.60569e+01 1.18987e+00 2492 2009 6 2.83206e+01 1.35917e+00 2283 2009 7 2.96183e+01 8.48848e-01 2072 2009 8 3.00425e+01 7.82335e-01 2376 2009 9 3.01217e+01 8.70446e-01 2147 2009 10 2.91487e+01 1.26626e+00 2904 2009 11 2.63164e+01 1.24452e+00 1359 2009 12 2.40507e+01 1.11715e+00 1636 2010 1 2.08681e+01 1.51226e+00 1519 2010 2 1.99260e+01 1.37642e+00 1160 2010 3 1.88982e+01 9.01189e-01 2191 2010 4 2.18445e+01 1.52427e+00 1952 2010 5 2.64905e+01 1.48318e+00 3318 2010 6 2.96498e+01 1.02095e+00 2562 2010 7 2.89725e+01 1.34194e+00 1820 2010 8 3.02800e+01 1.15736e+00 1697 2010 9 2.95405e+01 1.05203e+00 2012 2010 10 2.74721e+01 1.00894e+00 2733 2010 11 2.52000e+01 8.66296e-01 2719 2010 12 2.16187e+01 1.53819e+00 2663 2011 1 1.90345e+01 7.29825e-01 2349 2011 2 1.91305e+01 1.04771e+00 2751 2011 3 2.15654e+01 1.48114e+00 3461 2011 4 2.50268e+01 1.05533e+00 3384 2011 5 2.69782e+01 1.01916e+00 3088 2011 6 2.86864e+01 9.99345e-01 2147 2011 7 2.94348e+01 1.35155e+00 2065 2011 8 3.06809e+01 1.04539e+00 2058 2011 9 2.95960e+01 8.54801e-01 2257 2011 10 2.81579e+01 1.32916e+00 786 2011 11 2.49695e+01 6.36358e-01 3240 2011 12 2.31382e+01 4.78589e-01 2974 2012 1 2.17792e+01 7.36887e-01 2646 2012 2 2.22122e+01 9.58322e-01 2120 2012 3 2.35941e+01 9.67084e-01 3474 2012 4 2.49430e+01 6.81576e-01 2368 2012 5 2.67538e+01 1.32157e+00 2830 2012 6 2.82700e+01 1.12727e+00 1553 2012 7 2.87323e+01 1.33433e+00 2123 2012 8 2.98118e+01 1.27264e+00 2563 2012 9 2.87593e+01 9.49323e-01 1846 2012 10 2.74753e+01 1.05794e+00 2327 2012 11 2.44043e+01 1.09296e+00 2698 2012 12 2.30662e+01 8.44430e-01 2459 2013 1 2.26786e+01 6.82718e-01 2150 2013 2 2.21850e+01 7.60592e-01 2419 2013 3 2.09904e+01 5.90672e-01 2149 2013 4 2.27753e+01 1.85392e+00 2868 2013 5 2.58650e+01 1.12327e+00 2729 2013 6 2.81358e+01 1.06942e+00 2083 2013 7 2.88952e+01 1.08180e+00 2135 2013 8 2.94089e+01 1.16296e+00 1462 2013 9 2.88258e+01 8.06691e-01 1487 2013 10 2.82814e+01 9.98620e-01 1958 2013 11 2.60299e+01 9.40911e-01 1780 2013 12 2.45744e+01 4.82632e-01 2105 2014 1 2.24204e+01 9.34514e-01 1792 2014 2 2.26384e+01 6.42317e-01 2292 2014 3 2.31668e+01 5.92709e-01 2562 2014 4 2.38987e+01 1.29284e+00 2337 2014 5 2.57978e+01 9.01520e-01 2546 2014 6 2.85996e+01 1.40461e+00 2166 2014 7 3.00196e+01 1.01446e+00 2387 2014 8 3.05409e+01 1.10272e+00 2335 2014 9 2.99303e+01 8.55502e-01 1081 2014 10 2.86451e+01 1.22225e+00 2193 2014 11 2.56157e+01 1.26750e+00 2112 2014 12 2.29712e+01 6.69766e-01 2439 2015 1 2.20056e+01 8.53392e-01 1805 2015 2 2.06579e+01 6.05218e-01 2134 2015 3 2.34542e+01 1.72264e+00 3217 2015 4 2.54277e+01 1.61192e+00 2632 2015 5 2.71928e+01 9.33456e-01 2930 2015 6 2.90165e+01 1.02279e+00 1780 2015 7 2.98202e+01 7.50148e-01 1670 2015 8 3.04468e+01 1.08345e+00 2328 2015 9 2.98767e+01 1.27613e+00 1306 2015 10 2.87720e+01 1.04599e+00 2085 2015 11 2.70409e+01 9.73869e-01 2657 2015 12 2.49889e+01 8.29656e-01 1826 2016 1 2.38419e+01 1.62964e+00 732 2016 2 2.10237e+01 7.13737e-01 2047 2016 3 2.14564e+01 1.68337e+00 1735 2016 4 2.38552e+01 1.00048e+00 2907 2016 5 2.64686e+01 1.42358e+00 2462 2016 6 2.86040e+01 1.01534e+00 2423 2016 7 2.99503e+01 1.29836e+00 2240 2016 8 3.00163e+01 7.93133e-01 1943 2016 9 3.00150e+01 1.28796e+00 2140 2016 10 2.81211e+01 1.15157e+00 2253 2016 11 2.48793e+01 8.90716e-01 3254 2016 12 2.37342e+01 6.27765e-01 2852 2017 1 2.20268e+01 6.31126e-01 3058 2017 2 2.16127e+01 7.18914e-01 2592 2017 3 2.23657e+01 8.47381e-01 3767 2017 4 2.42788e+01 7.50133e-01 2513 2017 5 2.65620e+01 1.13721e+00 3050 2017 6 2.84628e+01 1.09856e+00 1489 2017 7 2.96202e+01 9.47489e-01 1874 2017 8 3.03170e+01 1.10799e+00 1790 2017 9 2.94400e+01 8.48300e-01 2115 2017 10 2.78934e+01 1.03732e+00 1521 2017 11 2.54530e+01 7.96376e-01 2873 2017 12 2.41819e+01 7.86625e-01 3052 2018 1 2.16449e+01 1.21139e+00 1865 2018 2 2.19588e+01 1.30250e+00 3495 2018 3 2.33171e+01 7.06041e-01 3401 2018 4 2.45274e+01 7.83143e-01 2997 2018 5 2.47224e+01 8.00200e-01 1406 2018 6 2.84662e+01 1.42925e+00 1795 2018 7 3.01803e+01 9.60665e-01 2620 2018 8 2.95310e+01 1.23082e+00 1830 2018 9 2.98523e+01 1.06871e+00 1833 2018 10 2.81724e+01 7.23684e-01 3060 2018 11 2.59271e+01 1.42216e+00 2276 2018 12 2.33360e+01 1.11665e+00 1898 2019 1 2.26995e+01 7.48842e-01 2093 2019 2 2.26607e+01 1.45393e+00 3080 2019 3 2.44616e+01 8.02658e-01 2781 2019 4 2.51171e+01 6.86775e-01 3074 2019 5 2.71910e+01 8.35230e-01 3192 2019 6 2.99701e+01 9.62792e-01 3006 2019 7 3.01010e+01 1.21527e+00 1972 2019 8 3.02531e+01 1.28042e+00 1792 2019 9 2.96049e+01 8.80529e-01 2446 2019 10 2.83579e+01 6.59233e-01 2148 2019 11 2.71035e+01 1.03765e+00 2073 2019 12 2.47510e+01 9.14831e-01 1911 2020 1 2.30831e+01 9.25873e-01 2823 2020 2 2.19254e+01 6.68807e-01 2623 2020 3 2.32383e+01 1.58781e+00 3954 2020 4 2.60383e+01 9.07955e-01 2657 2020 5 2.62677e+01 1.25624e+00 2499 2020 6 2.88801e+01 9.91270e-01 2081 2020 7 3.02228e+01 1.11697e+00 2032 2020 8 3.00142e+01 1.11863e+00 2125 2020 9 2.99412e+01 9.91705e-01 1451 2020 10 2.85732e+01 1.01918e+00 1602 2020 11 2.62202e+01 1.11342e+00 2468 2020 12 2.38466e+01 1.08255e+00 2514 2021 1 2.20783e+01 5.94086e-01 2103 2021 2 2.16301e+01 6.34075e-01 2921 2021 3 2.25526e+01 9.50877e-01 3259 2021 4 2.39416e+01 1.04736e+00 3010 2021 5 2.66414e+01 9.05788e-01 2718 2021 6 2.70784e+01 1.14669e+00 1351 2021 7 2.91461e+01 9.63697e-01 2459 2021 8 3.01602e+01 1.11255e+00 1670 2021 9 2.97731e+01 8.22631e-01 2241 2021 10 2.86809e+01 7.76283e-01 2411 2021 11 2.58625e+01 1.17802e+00 2058 2021 12 2.45187e+01 4.97161e-01 3443 2022 1 2.37380e+01 7.94974e-01 1729 2022 2 2.19233e+01 7.41527e-01 2725 2022 3 2.38376e+01 9.82868e-01 3387 2022 4 2.51409e+01 1.00463e+00 1261 2022 5 2.69951e+01 1.01058e+00 3075 2022 6 2.89020e+01 1.41584e+00 2576 2022 7 2.98191e+01 6.88662e-01 2260 2022 8 2.99166e+01 9.35212e-01 1847 2022 9 3.04454e+01 7.11595e-01 1713 2022 10 2.76049e+01 7.91773e-01 2192 2022 11 2.65542e+01 8.61455e-01 2467 2022 12 2.50094e+01 1.01882e+00 2783 2023 1 2.24865e+01 9.73209e-01 2971 2023 2 2.33140e+01 1.31088e+00 3768 2023 3 2.47224e+01 8.52265e-01 3601 2023 4 2.58792e+01 9.69229e-01 2762 2023 5 2.74366e+01 9.24895e-01 3673 2023 6 2.86565e+01 1.00243e+00 2789 2023 7 3.12267e+01 1.02117e+00 2534 2023 8 3.10760e+01 1.00117e+00 2395 2023 9 3.06716e+01 1.20813e+00 2342 2023 10 2.87276e+01 1.12284e+00 2363 2023 11 2.61244e+01 7.83307e-01 2101 2023 12 2.39182e+01 1.57992e+00 1164 2024 1 2.26040e+01 9.92737e-01 1198 2024 2 2.15970e+01 5.68469e-01 2487 2024 3 2.29769e+01 1.00634e+00 2486 2024 4 2.34434e+01 4.03180e-01 398