YEAR MONTH MEAN STDEV COUNT 2002 1 nan nan 0 2002 2 nan nan 0 2002 3 nan nan 0 2002 4 nan nan 0 2002 5 nan nan 0 2002 6 nan nan 0 2002 7 2.85060e+01 4.37788e+00 256 2002 8 1.58259e+01 3.56528e+00 384 2002 9 1.48455e+01 5.67057e+00 704 2002 10 1.15639e+01 3.27931e+00 1138 2002 11 7.24634e+00 5.27003e+00 763 2002 12 8.45673e+00 5.85776e+00 832 2003 1 7.25251e+00 4.20405e+00 702 2003 2 1.50536e+01 5.35691e+00 698 2003 3 2.49821e+01 2.60941e+00 393 2003 4 1.51838e+01 7.02690e+00 552 2003 5 2.58395e+01 5.61182e+00 640 2003 6 2.19327e+01 3.84833e+00 425 2003 7 2.53373e+01 2.15192e+00 546 2003 8 2.48898e+01 1.80884e+00 452 2003 9 6.22651e+00 3.06303e+00 418 2003 10 1.11714e+01 5.07209e+00 899 2003 11 7.83321e+00 4.95986e+00 967 2003 12 7.79295e+00 5.44556e+00 948 2004 1 1.21453e+01 4.50550e+00 1062 2004 2 1.72950e+01 9.06386e+00 886 2004 3 2.54428e+01 3.46210e+00 1170 2004 4 1.72636e+01 4.88778e+00 512 2004 5 2.15856e+01 4.78811e+00 843 2004 6 2.41046e+01 6.40770e+00 704 2004 7 2.10562e+01 8.81047e+00 522 2004 8 1.66536e+01 8.40474e+00 691 2004 9 5.46702e+00 5.97831e+00 434 2004 10 4.92537e+00 4.80186e+00 1017 2004 11 5.74004e+00 3.14044e+00 1152 2004 12 5.57064e+00 4.64274e+00 496 2005 1 9.70734e+00 4.93431e+00 1049 2005 2 5.24464e+00 4.92887e+00 896 2005 3 3.65393e+00 2.28506e+00 398 2005 4 2.04579e+01 6.01765e+00 891 2005 5 2.67783e+01 4.22860e+00 640 2005 6 1.54194e+01 6.51878e+00 128 2005 7 1.55195e+01 6.98327e+00 602 2005 8 1.33309e+01 6.69424e+00 768 2005 9 2.46540e+00 1.34221e+00 469 2005 10 1.07210e+00 1.54853e+00 704 2005 11 9.56426e-01 8.47900e-01 1056 2005 12 1.58188e+00 1.15185e+00 831 2006 1 4.40891e+00 2.97023e+00 797 2006 2 7.23702e+00 4.03908e+00 1028 2006 3 1.45862e+01 3.21480e+00 1152 2006 4 2.80481e+01 5.35872e+00 640 2006 5 2.88175e+01 3.30026e+00 780 2006 6 2.40071e+01 2.78626e+00 896 2006 7 2.57147e+01 5.07205e+00 406 2006 8 2.23454e+01 3.09388e+00 497 2006 9 2.15500e+01 7.69438e+00 660 2006 10 3.51329e+00 3.49606e+00 928 2006 11 7.08608e+00 3.89314e+00 621 2006 12 5.95613e+00 3.60197e+00 424 2007 1 9.99322e+00 4.12784e+00 576 2007 2 1.28960e+01 6.45966e+00 640 2007 3 2.50408e+01 6.95153e+00 780 2007 4 1.99953e+01 7.70298e+00 717 2007 5 2.18772e+01 3.43360e+00 593 2007 6 2.27012e+01 3.53799e+00 415 2007 7 2.10850e+01 3.42059e+00 677 2007 8 1.31442e+01 4.05511e+00 840 2007 9 1.39502e+01 4.71306e+00 768 2007 10 6.14218e+00 3.17501e+00 764 2007 11 1.37998e+01 5.88064e+00 1099 2007 12 1.57277e+01 7.30735e+00 1216 2008 1 1.61142e+01 7.20163e+00 672 2008 2 2.02917e+01 8.35287e+00 868 2008 3 2.11188e+01 1.00571e+01 763 2008 4 2.79952e+01 5.51670e+00 833 2008 5 2.71084e+01 4.31813e+00 704 2008 6 2.91260e+01 4.00164e+00 648 2008 7 2.11989e+01 6.10675e+00 535 2008 8 1.57265e+01 5.50067e+00 256 2008 9 7.64972e+00 5.17864e+00 583 2008 10 3.56604e+00 3.81452e+00 959 2008 11 1.09450e+01 5.24399e+00 1026 2008 12 1.09008e+01 6.22478e+00 1283 2009 1 1.48680e+01 7.29076e+00 960 2009 2 1.83848e+01 9.92492e+00 960 2009 3 2.12353e+01 1.02921e+01 904 2009 4 2.62581e+01 6.13559e+00 704 2009 5 3.03233e+01 5.24610e+00 658 2009 6 2.78807e+01 4.19211e+00 359 2009 7 2.48616e+01 3.76969e+00 427 2009 8 1.89513e+01 4.54592e+00 638 2009 9 1.52657e+01 8.31856e+00 607 2009 10 1.03432e+01 6.09329e+00 1068 2009 11 1.50737e+01 3.03865e+00 671 2009 12 1.27771e+01 5.16346e+00 454 2010 1 1.32377e+01 6.62896e+00 542 2010 2 7.84933e+00 6.19195e+00 420 2010 3 1.13916e+01 4.48368e+00 960 2010 4 1.60318e+01 3.28600e+00 448 2010 5 2.78054e+01 3.86658e+00 704 2010 6 3.06769e+01 3.94474e+00 980 2010 7 3.02741e+01 3.91141e+00 512 2010 8 2.14680e+01 5.63188e+00 674 2010 9 1.36160e+01 5.13838e+00 845 2010 10 1.55076e+01 3.69194e+00 1152 2010 11 1.91032e+01 6.34259e+00 1039 2010 12 5.29626e+00 4.15921e+00 832 2011 1 1.22864e+01 5.69636e+00 460 2011 2 2.32982e+01 4.18941e+00 952 2011 3 2.32376e+01 4.30865e+00 1053 2011 4 2.65038e+01 3.97843e+00 1001 2011 5 2.50905e+01 5.33965e+00 727 2011 6 2.39480e+01 3.59520e+00 638 2011 7 1.94220e+01 4.55552e+00 734 2011 8 1.16589e+01 3.45080e+00 522 2011 9 7.69420e+00 3.60612e+00 483 2011 10 1.33353e+01 7.98329e+00 512 2011 11 6.66956e+00 4.56034e+00 1225 2011 12 1.44017e+01 5.41370e+00 1347 2012 1 1.48982e+01 5.32320e+00 1216 2012 2 1.96746e+01 3.63493e+00 512 2012 3 2.13298e+01 5.58076e+00 1120 2012 4 2.52886e+01 4.73049e+00 801 2012 5 2.26406e+01 2.78341e+00 512 2012 6 2.02746e+01 5.14477e+00 256 2012 7 2.59741e+01 3.90125e+00 453 2012 8 2.28122e+01 4.46359e+00 506 2012 9 1.06771e+01 7.00126e+00 503 2012 10 7.67142e+00 5.05545e+00 840 2012 11 1.81032e+01 3.97758e+00 850 2012 12 1.06816e+01 6.61622e+00 828 2013 1 1.61981e+01 7.91922e+00 1034 2013 2 1.47698e+01 9.35580e+00 806 2013 3 1.33482e+01 6.71157e+00 796 2013 4 2.70806e+01 5.37003e+00 688 2013 5 2.62731e+01 3.18893e+00 820 2013 6 3.05842e+01 4.77323e+00 679 2013 7 1.94336e+01 8.98803e+00 194 2013 8 2.41302e+01 4.52693e+00 398 2013 9 1.59320e+01 7.95446e+00 684 2013 10 7.17820e+00 3.44682e+00 907 2013 11 1.05025e+01 5.71490e+00 696 2013 12 8.97900e+00 2.57904e+00 762 2014 1 7.61422e+00 4.12151e+00 558 2014 2 1.42647e+01 5.00573e+00 831 2014 3 1.33291e+01 3.87111e+00 706 2014 4 2.14003e+01 6.83540e+00 543 2014 5 1.96530e+01 4.57016e+00 835 2014 6 1.63557e+01 3.90666e+00 576 2014 7 2.07357e+01 2.41803e+00 448 2014 8 1.56999e+01 3.55228e+00 637 2014 9 1.72427e+01 4.75944e+00 320 2014 10 1.67770e+01 7.58892e+00 1152 2014 11 9.06542e+00 4.18969e+00 843 2014 12 1.12369e+01 1.59989e+00 896 2015 1 8.93528e+00 6.39116e+00 700 2015 2 7.59459e+00 2.94855e+00 736 2015 3 1.91583e+01 4.71382e+00 1231 2015 4 2.47708e+01 2.55950e+00 554 2015 5 1.58889e+01 5.84622e+00 1018 2015 6 2.25110e+01 3.73446e+00 599 2015 7 1.88750e+01 5.08257e+00 348 2015 8 1.87699e+01 3.28317e+00 320 2015 9 1.76140e+01 2.90221e+00 192 2015 10 6.82419e+00 2.74442e+00 557 2015 11 1.15614e+01 5.45620e+00 910 2015 12 5.99106e+00 4.05632e+00 448 2016 1 4.16098e+00 4.19208e+00 415 2016 2 2.61024e+00 1.83479e+00 885 2016 3 1.50371e+01 6.16241e+00 638 2016 4 1.91574e+01 4.66168e+00 672 2016 5 2.21439e+01 3.26215e+00 896 2016 6 2.70512e+01 3.51420e+00 397 2016 7 2.08728e+01 5.98318e+00 399 2016 8 2.50311e+01 6.37439e+00 621 2016 9 1.40519e+01 7.46187e+00 583 2016 10 1.09506e+01 9.55469e+00 926 2016 11 1.84586e+01 7.32662e+00 1216 2016 12 2.13779e+01 1.50746e+00 832 2017 1 1.32286e+01 8.43451e+00 945 2017 2 1.23204e+01 4.35500e+00 960 2017 3 2.19299e+01 4.34596e+00 1163 2017 4 2.00616e+01 5.98288e+00 653 2017 5 2.74568e+01 3.61296e+00 896 2017 6 2.06457e+01 4.20227e+00 267 2017 7 2.40899e+01 4.69013e+00 289 2017 8 1.72688e+01 3.29068e+00 578 2017 9 5.95759e+00 3.78365e+00 749 2017 10 4.00672e+00 3.56070e+00 818 2017 11 6.56642e+00 3.78132e+00 1170 2017 12 7.76946e+00 5.89285e+00 1102 2018 1 8.74189e+00 4.08253e+00 732 2018 2 1.90991e+01 7.07752e+00 915 2018 3 1.82293e+01 8.08566e+00 1282 2018 4 2.33676e+01 3.75754e+00 965 2018 5 2.67104e+01 3.19148e+00 384 2018 6 2.25441e+01 6.23173e+00 512 2018 7 2.10974e+01 7.56391e+00 592 2018 8 4.37639e+00 3.61786e+00 576 2018 9 6.18793e+00 5.47566e+00 640 2018 10 8.48040e+00 7.54892e+00 1047 2018 11 5.41729e+00 5.82462e+00 773 2018 12 2.25708e+00 2.89118e+00 558 2019 1 6.67199e+00 4.63194e+00 664 2019 2 1.78460e+01 5.26084e+00 821 2019 3 2.44169e+01 4.94098e+00 947 2019 4 2.40481e+01 4.99893e+00 691 2019 5 2.80273e+01 2.68263e+00 887 2019 6 2.58731e+01 3.64786e+00 564 2019 7 1.96483e+01 7.95394e+00 525 2019 8 1.93541e+01 3.71310e+00 398 2019 9 1.46279e+01 6.64207e+00 596 2019 10 1.45460e+01 5.51495e+00 899 2019 11 7.70236e+00 4.12431e+00 610 2019 12 6.09365e+00 3.54486e+00 704 2020 1 1.30976e+01 7.17996e+00 939 2020 2 1.53956e+01 5.94030e+00 743 2020 3 2.52032e+01 7.64578e+00 1138 2020 4 2.58711e+01 4.07802e+00 448 2020 5 2.58253e+01 4.53682e+00 646 2020 6 2.45864e+01 3.63096e+00 388 2020 7 1.77100e+01 2.91547e+00 448 2020 8 1.89455e+01 3.11453e+00 448 2020 9 1.67607e+01 2.36466e+00 214 2020 10 1.13090e+01 5.86099e+00 625 2020 11 1.93976e+00 1.63368e+00 1027 2020 12 7.24545e+00 5.19390e+00 880 2021 1 9.38741e+00 5.44181e+00 602 2021 2 1.56621e+01 7.16313e+00 823 2021 3 2.44635e+01 4.01786e+00 977 2021 4 2.54875e+01 3.18657e+00 728 2021 5 1.57961e+01 1.02070e+01 884 2021 6 2.04636e+01 6.13189e+00 192 2021 7 1.21747e+01 5.48478e+00 452 2021 8 1.45421e+01 5.52500e+00 518 2021 9 8.19226e+00 3.87120e+00 502 2021 10 3.72615e+00 3.53337e+00 811 2021 11 7.66652e+00 7.12327e+00 832 2021 12 1.23991e+01 5.19884e+00 896 2022 1 8.73114e+00 8.12536e+00 757 2022 2 1.29239e+01 6.71338e+00 1019 2022 3 1.62999e+01 6.38303e+00 1024 2022 4 2.75683e+01 4.24710e+00 384 2022 5 2.97883e+01 3.05945e+00 875 2022 6 2.61142e+01 3.92904e+00 640 2022 7 1.62796e+01 3.62059e+00 676 2022 8 7.56704e+00 1.89279e+00 468 2022 9 1.46966e+01 5.87982e+00 540 2022 10 4.76298e+00 3.91344e+00 1059 2022 11 5.48172e+00 3.52929e+00 763 2022 12 7.48338e+00 3.54111e+00 911 2023 1 1.46082e+01 7.15543e+00 862 2023 2 1.56016e+01 9.16068e+00 1216 2023 3 2.29539e+01 5.52929e+00 810 2023 4 3.00099e+01 5.04616e+00 384 2023 5 2.12347e+01 7.98128e+00 757 2023 6 1.97523e+01 3.55708e+00 460 2023 7 5.94405e+00 5.55185e+00 508 2023 8 4.48109e+00 3.31762e+00 384 2023 9 1.52714e+01 1.13478e+01 904 2023 10 1.51238e+01 7.46933e+00 705 2023 11 2.09592e+01 4.88482e+00 802 2023 12 1.27232e+01 1.06050e+01 355 2024 1 1.54958e+01 6.90401e+00 253 2024 2 1.28495e+01 5.39591e+00 715 2024 3 2.36117e+01 6.52047e+00 702 2024 4 nan nan 0