YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.97851e+00 8.05624e-02 77 2000 3 2.90236e+00 6.09099e-01 382 2000 4 3.70663e+00 6.20963e-01 159 2000 5 5.78754e+00 9.44497e-01 120 2000 6 1.31141e+01 2.48640e+00 195 2000 7 1.81932e+01 8.98083e-01 608 2000 8 2.04127e+01 7.28227e-01 620 2000 9 1.93796e+01 2.20629e+00 512 2000 10 1.24892e+01 9.39804e-01 307 2000 11 9.99966e+00 2.37863e+00 365 2000 12 4.52641e+00 1.42290e+00 449 2001 1 1.87587e+00 4.59438e-01 368 2001 2 1.56036e+00 3.70803e-01 165 2001 3 1.59104e+00 4.54342e-01 531 2001 4 2.43974e+00 4.51514e-01 154 2001 5 9.05029e+00 1.42506e+00 69 2001 6 1.06491e+01 7.81430e-01 17 2001 7 2.01628e+01 2.16192e+00 1266 2001 8 2.29304e+01 1.22977e+00 1593 2001 9 1.93764e+01 2.59148e+00 787 2001 10 1.40678e+01 1.43623e+00 694 2001 11 9.30962e+00 1.20482e+00 279 2001 12 5.27648e+00 8.00907e-01 792 2002 1 3.46987e+00 4.87573e-01 500 2002 2 2.87914e+00 5.18745e-01 411 2002 3 2.49967e+00 4.44674e-01 330 2002 4 3.39638e+00 8.35045e-01 399 2002 5 5.07252e+00 6.17149e-01 389 2002 6 1.42524e+01 1.95110e+00 232 2002 7 2.16436e+01 1.27800e+00 2489 2002 8 2.13728e+01 1.49104e+00 1666 2002 9 1.94064e+01 1.58687e+00 2065 2002 10 1.10267e+01 1.37054e+00 1105 2002 11 7.68990e+00 8.38867e-01 1537 2002 12 5.27163e+00 5.29692e-01 1377 2003 1 2.69768e+00 9.71018e-01 882 2003 2 7.31501e-01 2.81042e-01 483 2003 3 9.69936e-01 5.32879e-01 388 2003 4 1.62526e+00 4.96534e-01 311 2003 5 3.02958e+00 9.32326e-01 24 2003 6 1.27850e+01 1.51246e+00 126 2003 7 1.64561e+01 1.39707e+00 1494 2003 8 2.10601e+01 1.35636e+00 3050 2003 9 2.10273e+01 7.32105e-01 1535 2003 10 7.34440e+00 4.80661e-01 368 2003 11 6.63657e+00 7.43251e-01 855 2003 12 4.65339e+00 1.17691e+00 1063 2004 1 2.16071e+00 8.02417e-01 401 2004 2 8.33343e-01 4.57013e-01 534 2004 3 1.57473e+00 3.30033e-01 402 2004 4 2.81074e+00 7.96972e-01 856 2004 5 4.92904e+00 1.42073e+00 178 2004 6 1.32705e+01 9.83517e-01 951 2004 7 1.83174e+01 1.60854e+00 2297 2004 8 1.91459e+01 8.32545e-01 2336 2004 9 1.89148e+01 6.01885e-01 1445 2004 10 1.25029e+01 1.13406e+00 790 2004 11 8.98455e+00 8.77636e-01 1131 2004 12 6.21036e+00 1.32613e+00 723 2005 1 2.18875e+00 8.47169e-01 388 2005 2 1.07288e+00 3.52922e-01 125 2005 3 1.17267e+00 4.71421e-01 686 2005 4 3.30941e+00 5.85644e-01 363 2005 5 7.05004e+00 2.28825e+00 622 2005 6 1.68499e+01 2.62375e+00 213 2005 7 2.15455e+01 1.57303e+00 3227 2005 8 2.10167e+01 1.19507e+00 1416 2005 9 2.04002e+01 1.87542e+00 1708 2005 10 1.25839e+01 1.05580e+00 1188 2005 11 9.20134e+00 2.39975e+00 823 2005 12 3.75823e+00 7.06059e-01 775 2006 1 2.10169e+00 1.04217e+00 354 2006 2 1.58508e+00 7.27264e-01 677 2006 3 1.94243e+00 5.39710e-01 936 2006 4 3.69862e+00 8.03456e-01 538 2006 5 6.86231e+00 9.08097e-01 391 2006 6 1.45316e+01 1.72256e+00 1700 2006 7 1.97199e+01 1.76881e+00 1620 2006 8 2.16597e+01 5.46467e-01 1831 2006 9 2.02317e+01 1.36921e+00 1570 2006 10 1.18542e+01 2.85500e+00 773 2006 11 7.75329e+00 1.03340e+00 675 2006 12 5.16515e+00 9.65569e-01 1100 2007 1 4.12904e+00 9.61952e-01 741 2007 2 7.03068e-01 3.62284e-01 163 2007 3 1.15692e+00 6.08333e-01 342 2007 4 2.34370e+00 6.14833e-01 718 2007 5 5.32460e+00 8.47827e-01 261 2007 6 1.67193e+01 2.87024e+00 883 2007 7 2.00293e+01 1.44304e+00 2498 2007 8 2.18992e+01 8.97362e-01 2883 2007 9 1.99573e+01 2.28248e+00 1454 2007 10 1.23508e+01 9.82411e-01 884 2007 11 9.17071e+00 1.73219e+00 1281 2007 12 5.19639e+00 6.28585e-01 498 2008 1 3.07585e+00 6.24844e-01 573 2008 2 4.57017e-01 2.10199e-01 119 2008 3 1.23384e+00 4.57285e-01 499 2008 4 2.98457e+00 7.77597e-01 587 2008 5 5.83051e+00 1.24091e+00 146 2008 6 1.28798e+01 1.87328e+00 686 2008 7 1.70104e+01 1.55135e+00 629 2008 8 2.09618e+01 7.08312e-01 4022 2008 9 1.97974e+01 1.25727e+00 2783 2008 10 1.62799e+01 1.55142e+00 1542 2008 11 6.76298e+00 1.80674e+00 663 2008 12 3.54739e+00 1.02629e+00 598 2009 1 2.21560e+00 9.94962e-01 580 2009 2 6.20498e-01 2.13268e-01 412 2009 3 1.06346e+00 4.03606e-01 596 2009 4 2.57705e+00 1.30263e+00 605 2009 5 4.46312e+00 1.01301e+00 293 2009 6 1.85786e+01 3.49888e+00 348 2009 7 1.68342e+01 1.18088e+00 2128 2009 8 1.51560e+01 9.57146e-01 257 2009 9 1.89398e+01 1.15357e+00 3461 2009 10 1.28893e+01 1.67766e+00 701 2009 11 8.91229e+00 1.30093e+00 1070 2009 12 5.21166e+00 1.94194e+00 845 2010 1 2.20112e+00 7.23637e-01 425 2010 2 8.85813e-01 6.68163e-01 246 2010 3 2.30677e+00 9.91594e-01 491 2010 4 4.39527e+00 6.52822e-01 570 2010 5 6.72476e+00 1.18903e+00 392 2010 6 1.65993e+01 2.38422e+00 1117 2010 7 1.90943e+01 1.28962e+00 1141 2010 8 2.14864e+01 1.08908e+00 2629 2010 9 1.23248e+01 6.30572e-01 330 2010 10 1.40515e+01 1.04237e+00 2557 2010 11 8.18689e+00 1.66870e+00 866 2010 12 4.82413e+00 1.17614e+00 537 2011 1 2.56957e+00 2.98981e-01 360 2011 2 1.32026e+00 6.26389e-01 367 2011 3 1.46466e+00 7.24215e-01 904 2011 4 2.46543e+00 6.94018e-01 314 2011 5 4.59907e+00 4.82764e-01 188 2011 6 1.22301e+01 3.05952e+00 187 2011 7 1.93503e+01 1.66393e+00 1216 2011 8 2.21100e+01 9.23047e-01 3574 2011 9 1.98389e+01 1.17539e+00 1990 2011 10 1.33635e+01 2.26289e+00 1892 2011 11 1.00673e+01 9.16977e-01 1269 2011 12 5.89228e+00 3.73966e-01 884 2012 1 4.30384e+00 9.89355e-01 921 2012 2 2.96117e+00 7.69498e-01 1429 2012 3 3.40926e+00 8.43164e-01 324 2012 4 5.02314e+00 8.67738e-01 1190 2012 5 9.60035e+00 2.60521e+00 454 2012 6 1.39530e+01 1.79781e+00 1291 2012 7 2.21364e+01 1.18797e+00 2913 2012 8 2.25847e+01 1.03431e+00 3375 2012 9 1.98904e+01 2.23998e+00 1978 2012 10 1.21322e+01 3.56343e+00 876 2012 11 8.70540e+00 1.29065e+00 953 2012 12 6.47984e+00 9.16389e-01 503 2013 1 4.34546e+00 7.49034e-01 826 2013 2 1.33501e+00 7.03573e-01 431 2013 3 1.20380e+00 5.86908e-01 520 2013 4 2.62237e+00 5.63320e-01 843 2013 5 5.32822e+00 6.47618e-01 191 2013 6 1.33644e+01 2.68430e+00 280 2013 7 2.07521e+01 2.55615e+00 2228 2013 8 2.08496e+01 9.56043e-01 3077 2013 9 2.03181e+01 1.41015e+00 2339 2013 10 1.05270e+01 5.14650e+00 297 2013 11 5.75994e+00 9.55249e-01 1747 2013 12 3.51720e+00 9.11821e-01 379 2014 1 9.37225e-01 5.71236e-01 182 2014 2 5.82792e-01 1.25597e-01 240 2014 3 5.34406e-01 2.00145e-01 160 2014 4 8.77593e-01 5.60215e-01 268 2014 5 3.14466e+00 9.17170e-01 73 2014 6 8.50167e+00 1.17851e-01 3 2014 7 1.67462e+01 1.46494e+00 762 2014 8 1.92653e+01 1.10384e+00 2159 2014 9 1.71254e+01 2.43509e+00 1107 2014 10 1.13963e+01 8.64448e-01 1375 2014 11 7.41888e+00 1.36438e+00 1230 2014 12 4.65825e+00 9.95722e-01 704 2015 1 2.29390e+00 1.10911e+00 364 2015 2 2.49048e-01 5.27148e-02 42 2015 3 1.13790e+00 5.51037e-01 548 2015 4 2.77387e+00 8.24061e-01 262 2015 5 6.96512e+00 1.29963e+00 85 2015 6 1.26017e+01 2.27272e+00 162 2015 7 1.82339e+01 2.98417e+00 1419 2015 8 1.96328e+01 1.31156e+00 692 2015 9 1.55187e+01 8.16908e-01 613 2015 10 1.42281e+01 1.36972e+00 1679 2015 11 5.45058e+00 5.10518e-01 891 2015 12 4.88904e+00 4.66175e-01 493 2016 1 2.49055e+00 8.40150e-01 771 2016 2 1.33293e+00 9.12712e-01 379 2016 3 2.08878e+00 7.69865e-01 438 2016 4 3.27326e+00 5.01883e-01 574 2016 5 6.07417e+00 1.80013e+00 360 2016 6 1.69267e+01 2.20235e+00 935 2016 7 1.98487e+01 1.18971e+00 1424 2016 8 2.22678e+01 1.48764e+00 2527 2016 9 1.90865e+01 1.87338e+00 1348 2016 10 1.59172e+01 1.47551e+00 1541 2016 11 1.05434e+01 2.32542e+00 1909 2016 12 4.74619e+00 6.23214e-01 810 2017 1 2.99927e+00 8.53877e-01 548 2017 2 2.47391e+00 6.94742e-01 710 2017 3 2.05410e+00 5.63319e-01 559 2017 4 3.75959e+00 1.06204e+00 171 2017 5 6.10909e+00 1.99941e+00 590 2017 6 1.20528e+01 1.68043e+00 307 2017 7 1.93150e+01 2.03040e+00 1440 2017 8 2.10051e+01 7.38214e-01 2946 2017 9 1.98218e+01 1.01264e+00 3420 2017 10 1.22459e+01 2.05281e+00 413 2017 11 5.74088e+00 4.34834e-01 1229 2017 12 4.32544e+00 1.19432e+00 979 2018 1 1.37018e+00 2.69043e-01 137 2018 2 1.14481e+00 7.78675e-01 188 2018 3 1.59999e+00 6.01505e-01 1019 2018 4 2.23049e+00 6.55872e-01 972 2018 5 nan nan 0 2018 6 1.47697e+01 2.76132e+00 124 2018 7 2.02876e+01 1.18181e+00 2297 2018 8 2.30379e+01 8.38478e-01 2623 2018 9 1.86827e+01 1.18388e+00 1954 2018 10 1.17755e+01 2.05941e+00 1227 2018 11 7.10809e+00 1.28762e+00 456 2018 12 4.69356e+00 3.10424e-01 668 2019 1 3.01167e+00 8.72712e-01 445 2019 2 1.82163e-01 3.02927e-01 208 2019 3 1.16565e+00 4.26685e-01 614 2019 4 2.46004e+00 3.59623e-01 449 2019 5 5.19602e+00 2.33145e+00 88 2019 6 1.08090e+01 3.15864e+00 50 2019 7 1.82415e+01 1.94832e+00 1061 2019 8 2.00638e+01 9.67089e-01 2641 2019 9 1.53554e+01 1.48107e+00 1130 2019 10 1.05028e+01 3.54475e+00 1779 2019 11 5.27838e+00 6.22528e-01 1502 2019 12 3.92896e+00 6.61973e-01 1164 2020 1 3.28337e+00 7.30492e-01 1399 2020 2 1.86503e+00 4.33972e-01 2059 2020 3 2.23393e+00 4.41416e-01 1623 2020 4 3.38826e+00 6.06189e-01 1464 2020 5 6.49546e+00 3.27700e+00 1532 2020 6 1.42120e+01 3.17445e+00 2601 2020 7 2.21299e+01 1.14691e+00 3486 2020 8 2.20563e+01 1.22406e+00 2603 2020 9 1.71701e+01 8.19115e-01 1648 2020 10 9.78664e+00 1.87656e+00 2089 2020 11 7.35444e+00 1.10077e+00 2433 2020 12 5.36988e+00 5.91342e-01 1212 2021 1 2.94168e+00 6.73410e-01 531 2021 2 1.47112e+00 5.59802e-01 825 2021 3 2.26321e+00 7.29858e-01 2446 2021 4 3.91671e+00 6.76150e-01 1960 2021 5 7.84793e+00 2.21421e+00 1585 2021 6 1.62765e+01 2.56225e+00 2309 2021 7 1.94002e+01 1.88988e+00 3245 2021 8 2.14884e+01 1.16961e+00 2778 2021 9 2.02035e+01 1.33688e+00 3818 2021 10 1.70080e+01 1.29210e+00 1823 2021 11 1.23299e+01 1.99441e+00 1799 2021 12 6.23155e+00 7.62976e-01 1425 2022 1 3.55359e+00 1.17449e+00 1144 2022 2 1.11458e+00 4.07447e-01 506 2022 3 1.26398e+00 5.86357e-01 1075 2022 4 2.76278e+00 5.76044e-01 541 2022 5 6.68896e+00 2.58912e+00 431 2022 6 1.41046e+01 2.77770e+00 1725 2022 7 1.89522e+01 1.48217e+00 2295 2022 8 1.94823e+01 1.81945e+00 2857 2022 9 1.96533e+01 1.18182e+00 3268 2022 10 1.51867e+01 2.16797e+00 2533 2022 11 8.68311e+00 2.66927e+00 2064 2022 12 5.07859e+00 8.10960e-01 1162 2023 1 2.95540e+00 7.39124e-01 768 2023 2 2.10910e+00 4.98262e-01 2232 2023 3 2.17360e+00 3.09868e-01 1671 2023 4 3.44377e+00 1.05062e+00 1698 2023 5 8.19957e+00 3.62054e+00 980 2023 6 1.50090e+01 2.10497e+00 1726 2023 7 1.97251e+01 1.29039e+00 3478 2023 8 2.14885e+01 7.19503e-01 3607 2023 9 2.01900e+01 9.66392e-01 2481 2023 10 1.74341e+01 2.01595e+00 2230 2023 11 1.09251e+01 2.00562e+00 1825 2023 12 6.02988e+00 7.36201e-01 1305 2024 1 2.38068e+00 8.41625e-01 314 2024 2 2.46610e+00 4.06954e-01 2068 2024 3 3.21197e+00 4.87887e-01 2018 2024 4 2.94764e+00 8.12004e-02 55