YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.94225e+01 4.65950e-01 192 2000 3 2.24298e+01 8.48291e-01 553 2000 4 2.37233e+01 1.26421e+00 663 2000 5 2.56761e+01 1.91972e+00 427 2000 6 2.94997e+01 1.26307e+00 376 2000 7 2.92215e+01 1.36999e+00 484 2000 8 2.99502e+01 7.00136e-01 509 2000 9 2.94487e+01 6.50987e-01 424 2000 10 2.42235e+01 1.61262e+00 880 2000 11 2.25416e+01 1.72310e+00 457 2000 12 1.78150e+01 1.49561e+00 382 2001 1 1.40995e+01 3.58667e-01 266 2001 2 1.97181e+01 2.13451e+00 360 2001 3 2.00913e+01 1.02890e+00 565 2001 4 2.34494e+01 1.47991e+00 559 2001 5 2.51156e+01 2.08737e+00 807 2001 6 2.92558e+01 9.45742e-01 391 2001 7 2.87665e+01 1.18485e+00 201 2001 8 2.97062e+01 1.06114e+00 489 2001 9 2.73550e+01 1.82759e+00 512 2001 10 2.40884e+01 1.50248e+00 545 2001 11 2.12596e+01 8.49471e-01 799 2001 12 2.19763e+01 1.16737e+00 748 2002 1 1.71560e+01 2.33478e+00 436 2002 2 1.84321e+01 1.46513e+00 562 2002 3 2.06578e+01 2.26868e+00 403 2002 4 2.51614e+01 1.72939e+00 461 2002 5 2.71176e+01 1.56842e+00 734 2002 6 2.74996e+01 6.11857e-01 299 2002 7 2.90087e+01 1.68217e+00 1443 2002 8 2.88618e+01 1.48593e+00 1542 2002 9 2.87397e+01 1.15224e+00 1904 2002 10 2.76328e+01 1.28331e+00 3453 2002 11 2.26371e+01 2.54421e+00 2007 2002 12 1.74241e+01 9.31155e-01 1232 2003 1 1.45983e+01 1.20729e+00 1727 2003 2 1.72840e+01 1.91879e+00 1161 2003 3 2.26472e+01 1.33039e+00 1375 2003 4 2.27734e+01 1.55598e+00 2415 2003 5 2.76333e+01 1.81874e+00 2722 2003 6 2.82781e+01 1.15772e+00 1448 2003 7 2.95886e+01 1.87809e+00 1352 2003 8 2.85961e+01 1.16671e+00 1859 2003 9 2.85938e+01 1.05741e+00 1912 2003 10 2.58846e+01 1.02814e+00 1993 2003 11 2.29831e+01 1.40295e+00 2456 2003 12 1.71632e+01 1.72045e+00 1219 2004 1 1.64703e+01 9.54128e-01 2129 2004 2 1.73290e+01 9.85264e-01 874 2004 3 2.00453e+01 1.54249e+00 2530 2004 4 2.20197e+01 1.36636e+00 2538 2004 5 2.66379e+01 1.92903e+00 3005 2004 6 3.01333e+01 1.16939e+00 2721 2004 7 2.93383e+01 1.67889e+00 1944 2004 8 2.97734e+01 1.37207e+00 1810 2004 9 2.79352e+01 1.73720e+00 1868 2004 10 2.61462e+01 1.31791e+00 3058 2004 11 2.27019e+01 1.52213e+00 2327 2004 12 1.78713e+01 2.50886e+00 1660 2005 1 1.66809e+01 1.54074e+00 1666 2005 2 1.68072e+01 1.38065e+00 2112 2005 3 1.99423e+01 1.64479e+00 1566 2005 4 2.22947e+01 1.08202e+00 2779 2005 5 2.55046e+01 1.60298e+00 2809 2005 6 2.86968e+01 1.18488e+00 1599 2005 7 2.96774e+01 1.37789e+00 2598 2005 8 3.08259e+01 1.59163e+00 2185 2005 9 2.85572e+01 1.00805e+00 2501 2005 10 2.54921e+01 2.69611e+00 2341 2005 11 2.15105e+01 1.24607e+00 1928 2005 12 1.81324e+01 1.72848e+00 1454 2006 1 1.71367e+01 7.61853e-01 1564 2006 2 1.72991e+01 1.22656e+00 1879 2006 3 2.04993e+01 1.53255e+00 2905 2006 4 2.42330e+01 2.05754e+00 3287 2006 5 2.63182e+01 1.38699e+00 3165 2006 6 2.87789e+01 1.11272e+00 2579 2006 7 2.95767e+01 1.30662e+00 2065 2006 8 3.04363e+01 1.23333e+00 2676 2006 9 2.93166e+01 7.63495e-01 2547 2006 10 2.58751e+01 1.84103e+00 3518 2006 11 2.06033e+01 2.18715e+00 1905 2006 12 1.85315e+01 9.41419e-01 1325 2007 1 1.88651e+01 1.32992e+00 1586 2007 2 1.63736e+01 1.29985e+00 1341 2007 3 1.99079e+01 1.43501e+00 2163 2007 4 2.27455e+01 1.12788e+00 2735 2007 5 2.49797e+01 9.24166e-01 2969 2007 6 2.77721e+01 1.67177e+00 2615 2007 7 3.05053e+01 1.58841e+00 1858 2007 8 3.03696e+01 8.89451e-01 2548 2007 9 2.92920e+01 1.25883e+00 2014 2007 10 2.70639e+01 8.24421e-01 1898 2007 11 2.15688e+01 1.66278e+00 2731 2007 12 2.07867e+01 1.28442e+00 2329 2008 1 1.67165e+01 1.44791e+00 1254 2008 2 1.89368e+01 1.01974e+00 1941 2008 3 1.99407e+01 1.11083e+00 2126 2008 4 2.31751e+01 1.40954e+00 2714 2008 5 2.62357e+01 1.41508e+00 3130 2008 6 2.90132e+01 1.66488e+00 2450 2008 7 2.92556e+01 1.50252e+00 1493 2008 8 2.95094e+01 1.10513e+00 1547 2008 9 2.82906e+01 1.07183e+00 2356 2008 10 2.53996e+01 1.92826e+00 2890 2008 11 1.91278e+01 1.91568e+00 2699 2008 12 1.78937e+01 1.08334e+00 1801 2009 1 1.74813e+01 1.98726e+00 2381 2009 2 1.63630e+01 1.37489e+00 1788 2009 3 1.99639e+01 2.08875e+00 2528 2009 4 2.28894e+01 1.30603e+00 2559 2009 5 2.65997e+01 1.56339e+00 2807 2009 6 2.91934e+01 1.33504e+00 2351 2009 7 3.00016e+01 1.31799e+00 2635 2009 8 3.01132e+01 1.13270e+00 1896 2009 9 2.95045e+01 1.34560e+00 2071 2009 10 2.75430e+01 2.50431e+00 2873 2009 11 2.22187e+01 1.56983e+00 1498 2009 12 1.82614e+01 1.60432e+00 1022 2010 1 1.38195e+01 2.68133e+00 1406 2010 2 1.51462e+01 1.17141e+00 1242 2010 3 1.66713e+01 1.92878e+00 2404 2010 4 2.22955e+01 1.85068e+00 2264 2010 5 2.75287e+01 1.74901e+00 3279 2010 6 3.05689e+01 9.72729e-01 2534 2010 7 2.95113e+01 1.32360e+00 2183 2010 8 3.02092e+01 1.94930e+00 1652 2010 9 2.93244e+01 1.08944e+00 2560 2010 10 2.57725e+01 1.19714e+00 3810 2010 11 2.13075e+01 1.90375e+00 2805 2010 12 1.59532e+01 2.89722e+00 1931 2011 1 1.43198e+01 1.33090e+00 1487 2011 2 1.75413e+01 1.51191e+00 1746 2011 3 2.10390e+01 1.45118e+00 2707 2011 4 2.50562e+01 1.45390e+00 3528 2011 5 2.70811e+01 1.10921e+00 3755 2011 6 2.93425e+01 1.29706e+00 2283 2011 7 2.99905e+01 1.33900e+00 1846 2011 8 3.00286e+01 1.21807e+00 2403 2011 9 2.90189e+01 9.06051e-01 2335 2011 10 2.48875e+01 2.18464e+00 2425 2011 11 2.08852e+01 1.01115e+00 2540 2011 12 1.93874e+01 7.38706e-01 2483 2012 1 1.73879e+01 1.35550e+00 2024 2012 2 1.90261e+01 1.53147e+00 1161 2012 3 2.28756e+01 1.27343e+00 2977 2012 4 2.43185e+01 1.09930e+00 2724 2012 5 2.73570e+01 1.18939e+00 2777 2012 6 2.82264e+01 1.07403e+00 1843 2012 7 2.91322e+01 1.32850e+00 2360 2012 8 3.01075e+01 1.60928e+00 2093 2012 9 2.86017e+01 1.28458e+00 2083 2012 10 2.60941e+01 2.24869e+00 2509 2012 11 1.98262e+01 1.23381e+00 2280 2012 12 1.93651e+01 1.63466e+00 1810 2013 1 1.88215e+01 9.38195e-01 1481 2013 2 1.85161e+01 1.27059e+00 2281 2013 3 1.86909e+01 1.14552e+00 2464 2013 4 2.30696e+01 2.39002e+00 1944 2013 5 2.61899e+01 1.16315e+00 2914 2013 6 2.90258e+01 1.60699e+00 2021 2013 7 2.93314e+01 1.32100e+00 1166 2013 8 3.03634e+01 1.22777e+00 1884 2013 9 2.95869e+01 1.52578e+00 2375 2013 10 2.66656e+01 1.82820e+00 2487 2013 11 2.23264e+01 1.56324e+00 1365 2013 12 2.01127e+01 1.19283e+00 1667 2014 1 1.61309e+01 9.49392e-01 1408 2014 2 1.80492e+01 9.93801e-01 1162 2014 3 2.03297e+01 1.12885e+00 1989 2014 4 2.27959e+01 1.70308e+00 2079 2014 5 2.56675e+01 1.53202e+00 2324 2014 6 2.89545e+01 1.53914e+00 2303 2014 7 3.03232e+01 1.49296e+00 1947 2014 8 3.07387e+01 1.16767e+00 2496 2014 9 2.94687e+01 1.17455e+00 1300 2014 10 2.65333e+01 1.59648e+00 3239 2014 11 2.07952e+01 1.91316e+00 2170 2014 12 1.81495e+01 1.01508e+00 1706 2015 1 1.81526e+01 1.31218e+00 1484 2015 2 1.67041e+01 9.39707e-01 1952 2015 3 2.23294e+01 2.24770e+00 2318 2015 4 2.52426e+01 1.79019e+00 2078 2015 5 2.74637e+01 1.57853e+00 3117 2015 6 2.99952e+01 1.32813e+00 2100 2015 7 2.98734e+01 1.57918e+00 1845 2015 8 3.01810e+01 1.63830e+00 1719 2015 9 2.96581e+01 1.18961e+00 1331 2015 10 2.66687e+01 1.66421e+00 2166 2015 11 2.42436e+01 2.13080e+00 2252 2015 12 2.11122e+01 1.55719e+00 1403 2016 1 1.84300e+01 2.31623e+00 1355 2016 2 1.69932e+01 1.33713e+00 1946 2016 3 1.98813e+01 2.18432e+00 1295 2016 4 2.39591e+01 1.32665e+00 2534 2016 5 2.69591e+01 1.34156e+00 2715 2016 6 2.90762e+01 1.57757e+00 1999 2016 7 3.06971e+01 1.31514e+00 1815 2016 8 3.05544e+01 1.16415e+00 1997 2016 9 2.97657e+01 1.25209e+00 2583 2016 10 2.62002e+01 2.12219e+00 2302 2016 11 2.20757e+01 1.91352e+00 2251 2016 12 2.07313e+01 8.09660e-01 2709 2017 1 1.91373e+01 1.18450e+00 2018 2017 2 1.98548e+01 1.11683e+00 2080 2017 3 2.09179e+01 1.22587e+00 2862 2017 4 2.40330e+01 1.34566e+00 2486 2017 5 2.62777e+01 1.47150e+00 2408 2017 6 2.90163e+01 1.54184e+00 930 2017 7 3.06904e+01 1.37720e+00 2117 2017 8 3.07393e+01 1.70504e+00 2052 2017 9 2.93167e+01 1.16487e+00 2409 2017 10 2.57420e+01 2.10067e+00 1908 2017 11 2.19623e+01 9.47135e-01 3114 2017 12 2.03462e+01 1.64276e+00 2511 2018 1 1.49164e+01 8.13704e-01 1254 2018 2 2.08622e+01 2.62435e+00 2203 2018 3 2.06105e+01 1.60594e+00 3027 2018 4 2.40138e+01 1.16647e+00 2555 2018 5 2.54829e+01 1.32063e+00 1356 2018 6 2.93656e+01 1.75846e+00 2143 2018 7 3.00861e+01 1.09899e+00 2120 2018 8 3.04665e+01 1.06504e+00 2088 2018 9 3.00452e+01 1.22843e+00 2509 2018 10 2.75407e+01 1.60689e+00 3055 2018 11 2.35585e+01 1.85614e+00 1993 2018 12 1.88169e+01 1.61340e+00 1677 2019 1 1.82829e+01 1.85738e+00 1872 2019 2 1.95465e+01 2.49023e+00 1819 2019 3 2.16275e+01 1.19245e+00 2599 2019 4 2.41694e+01 1.43523e+00 2447 2019 5 2.78665e+01 1.43330e+00 2799 2019 6 3.03168e+01 1.24236e+00 2234 2019 7 3.03363e+01 1.08291e+00 2079 2019 8 3.00345e+01 9.91101e-01 1666 2019 9 2.92330e+01 1.37162e+00 2742 2019 10 2.71589e+01 8.11319e-01 2427 2019 11 2.28711e+01 2.68072e+00 2218 2019 12 1.96145e+01 1.05561e+00 1702 2020 1 1.89297e+01 1.30962e+00 2625 2020 2 1.91357e+01 1.54881e+00 2044 2020 3 2.31269e+01 2.67037e+00 2617 2020 4 2.55310e+01 9.68961e-01 1802 2020 5 2.61977e+01 1.19690e+00 2956 2020 6 2.98516e+01 1.23081e+00 1892 2020 7 3.04086e+01 9.73006e-01 1608 2020 8 3.13487e+01 1.20920e+00 1189 2020 9 2.97498e+01 1.50672e+00 1464 2020 10 2.72882e+01 9.77583e-01 1629 2020 11 2.32989e+01 1.51480e+00 2301 2020 12 1.79622e+01 1.46599e+00 2921 2021 1 1.75092e+01 9.51051e-01 1878 2021 2 1.93126e+01 1.92511e+00 2679 2021 3 2.10305e+01 1.25148e+00 2364 2021 4 2.39718e+01 1.70388e+00 2603 2021 5 2.69689e+01 1.24985e+00 2809 2021 6 2.83988e+01 1.40232e+00 1522 2021 7 3.01113e+01 1.43644e+00 1544 2021 8 3.03672e+01 9.85102e-01 1521 2021 9 2.94779e+01 9.43796e-01 2107 2021 10 2.76917e+01 1.42019e+00 2510 2021 11 2.10548e+01 1.68264e+00 2571 2021 12 2.04485e+01 1.09967e+00 3233 2022 1 1.87678e+01 2.35116e+00 2758 2022 2 1.80396e+01 1.95053e+00 2605 2022 3 2.21301e+01 8.52232e-01 3620 2022 4 2.44659e+01 8.39897e-01 1684 2022 5 2.74821e+01 1.20833e+00 2593 2022 6 2.91654e+01 1.50930e+00 2066 2022 7 3.11142e+01 9.20279e-01 2438 2022 8 3.05398e+01 9.60591e-01 1661 2022 9 2.96441e+01 1.83196e+00 2139 2022 10 2.44985e+01 1.42894e+00 2858 2022 11 2.36779e+01 1.82175e+00 1760 2022 12 2.05411e+01 2.58607e+00 2176 2023 1 1.74569e+01 9.39563e-01 2750 2023 2 2.04441e+01 1.47329e+00 2793 2023 3 2.32983e+01 1.64961e+00 3609 2023 4 2.52822e+01 8.12776e-01 2072 2023 5 2.74373e+01 1.57070e+00 3676 2023 6 2.90410e+01 1.47804e+00 2344 2023 7 3.12222e+01 1.10618e+00 2134 2023 8 3.16764e+01 1.33357e+00 2896 2023 9 3.00221e+01 1.07733e+00 2727 2023 10 2.51332e+01 1.87386e+00 2278 2023 11 2.25877e+01 1.06477e+00 2014 2023 12 1.81858e+01 1.59118e+00 1020 2024 1 1.70582e+01 8.44080e-01 1002 2024 2 1.79620e+01 7.06019e-01 2437 2024 3 2.28829e+01 1.03509e+00 1544 2024 4 2.33284e+01 2.86068e-01 76