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 3.00004e+00 6.25423e-01 322 2002 8 2.71501e+00 5.62490e-01 344 2002 9 3.47965e+00 9.65818e-01 464 2002 10 4.09875e+00 1.47829e+00 1178 2002 11 3.95638e+00 9.15544e-01 933 2002 12 3.31953e+00 4.28210e-01 512 2003 1 4.20374e+00 7.84462e-01 613 2003 2 2.72767e+00 6.12359e-01 640 2003 3 3.45139e+00 2.31548e+00 352 2003 4 3.03376e+00 1.43067e+00 734 2003 5 2.55137e+00 5.48653e-01 455 2003 6 2.36849e+00 7.30696e-01 186 2003 7 3.20157e+00 1.69464e+00 384 2003 8 3.12594e+00 1.10871e+00 484 2003 9 3.59509e+00 1.95972e+00 468 2003 10 4.63004e+00 2.51653e+00 1081 2003 11 4.72570e+00 3.12974e+00 1009 2003 12 3.00315e+00 5.61065e-01 855 2004 1 2.48937e+00 4.83555e-01 981 2004 2 2.25192e+00 3.26193e-01 688 2004 3 1.91967e+00 4.23637e-01 1266 2004 4 1.42013e+00 2.45554e-01 384 2004 5 1.52020e+00 2.19296e-01 511 2004 6 1.80469e+00 6.68988e-01 572 2004 7 2.40993e+00 4.19737e-01 498 2004 8 4.32918e+00 1.09528e+00 610 2004 9 4.86794e+00 9.90331e-01 292 2004 10 5.82567e+00 2.68980e+00 985 2004 11 5.56426e+00 3.55706e+00 990 2004 12 3.50226e+00 9.58493e-01 651 2005 1 2.73351e+00 4.92660e-01 949 2005 2 4.83560e+00 2.18373e+00 958 2005 3 7.61010e+00 4.24551e+00 320 2005 4 3.29937e+00 4.24125e-01 576 2005 5 2.24598e+00 6.60284e-01 469 2005 6 2.77794e+00 6.33949e-01 128 2005 7 4.03093e+00 1.48901e+00 539 2005 8 4.62232e+00 1.64914e+00 571 2005 9 1.02678e+01 1.15000e+01 581 2005 10 5.62081e+00 3.92888e+00 655 2005 11 5.88012e+00 2.60009e+00 1049 2005 12 4.51336e+00 8.87462e-01 704 2006 1 3.40186e+00 7.68461e-01 534 2006 2 2.42615e+00 4.34276e-01 676 2006 3 1.96127e+00 3.42649e-01 942 2006 4 1.31909e+00 2.85770e-01 607 2006 5 1.23651e+00 2.26416e-01 704 2006 6 1.84008e+00 3.27073e-01 705 2006 7 2.78827e+00 9.92137e-01 512 2006 8 3.95106e+00 3.53413e+00 436 2006 9 4.16979e+00 1.95846e+00 704 2006 10 7.95592e+00 3.70814e+00 1016 2006 11 4.08761e+00 1.11412e+00 616 2006 12 2.95066e+00 4.39685e-01 485 2007 1 3.55115e+00 1.08728e+00 555 2007 2 1.89456e+00 4.07307e-01 512 2007 3 1.89889e+00 3.97288e-01 666 2007 4 1.65563e+00 2.73899e-01 486 2007 5 1.21795e+00 3.87408e-01 250 2007 6 1.76403e+00 2.77494e-01 501 2007 7 2.69669e+00 1.11585e+00 653 2007 8 2.83242e+00 8.39168e-01 737 2007 9 3.41588e+00 6.83009e-01 829 2007 10 4.46593e+00 2.00378e+00 549 2007 11 1.92660e+00 1.18978e+00 1038 2007 12 2.07795e+00 3.92330e-01 1324 2008 1 2.17748e+00 4.53206e-01 581 2008 2 1.74574e+00 3.17654e-01 873 2008 3 1.96786e+00 3.73335e-01 526 2008 4 1.59548e+00 5.59633e-01 883 2008 5 1.71378e+00 3.00138e-01 582 2008 6 1.73514e+00 3.25110e-01 511 2008 7 2.46763e+00 8.26555e-01 370 2008 8 6.21991e+00 3.75327e+00 339 2008 9 3.37995e+00 9.63843e-01 675 2008 10 4.65413e+00 1.58208e+00 980 2008 11 3.05235e+00 8.14520e-01 1270 2008 12 2.78147e+00 5.01451e-01 1268 2009 1 1.96866e+00 3.21142e-01 832 2009 2 1.87156e+00 2.42230e-01 774 2009 3 1.37440e+00 2.36510e-01 647 2009 4 1.38338e+00 2.35813e-01 432 2009 5 1.29258e+00 3.75682e-01 640 2009 6 1.71499e+00 2.81772e-01 320 2009 7 3.46539e+00 1.23152e+00 444 2009 8 2.89214e+00 5.44327e-01 440 2009 9 3.36448e+00 7.71811e-01 713 2009 10 7.70907e+00 1.26961e+01 1025 2009 11 5.14549e+00 4.88880e+00 800 2009 12 3.39786e+00 4.59591e-01 465 2010 1 2.56399e+00 3.82836e-01 644 2010 2 1.91676e+00 3.16008e-01 150 2010 3 1.79403e+00 1.83032e-01 465 2010 4 1.98287e+00 4.51181e-01 473 2010 5 1.72340e+00 2.28002e-01 666 2010 6 1.61439e+00 3.05084e-01 884 2010 7 2.59015e+00 6.62373e-01 543 2010 8 3.07155e+00 5.22975e-01 576 2010 9 3.92973e+00 9.11535e-01 561 2010 10 2.67633e+00 5.34065e-01 1030 2010 11 2.13363e+00 4.20856e-01 1088 2010 12 2.18320e+00 3.26751e-01 762 2011 1 2.23859e+00 2.76879e-01 617 2011 2 1.47218e+00 3.69624e-01 1001 2011 3 1.27731e+00 2.71119e-01 1135 2011 4 1.53136e+00 2.29715e-01 726 2011 5 1.43111e+00 1.54528e-01 532 2011 6 2.59144e+00 7.38267e-01 524 2011 7 3.33294e+00 1.44959e+00 436 2011 8 3.34253e+00 1.01523e+00 384 2011 9 3.77424e+00 6.76937e-01 535 2011 10 4.83738e+00 2.61877e+00 360 2011 11 6.17789e+00 3.63660e+00 724 2011 12 2.91973e+00 7.05803e-01 1205 2012 1 2.05662e+00 3.13390e-01 1208 2012 2 1.64369e+00 2.24650e-01 616 2012 3 1.61871e+00 2.72493e-01 1151 2012 4 1.63506e+00 3.06303e-01 677 2012 5 1.55349e+00 4.11952e-01 472 2012 6 2.70924e+00 3.97037e-01 285 2012 7 2.43068e+00 4.86685e-01 444 2012 8 2.50945e+00 5.60111e-01 430 2012 9 3.95640e+00 1.24043e+00 478 2012 10 6.69368e+00 3.18753e+00 839 2012 11 4.12621e+00 1.98924e+00 817 2012 12 3.85592e+00 1.26263e+00 766 2013 1 5.03536e+00 2.34048e+00 969 2013 2 4.76277e+00 1.45455e+00 889 2013 3 2.48041e+00 5.50825e-01 832 2013 4 1.90967e+00 4.63055e-01 672 2013 5 1.92929e+00 3.27578e-01 640 2013 6 1.88757e+00 4.96671e-01 570 2013 7 4.14362e+00 9.34644e-01 341 2013 8 6.97781e+00 4.81468e+00 377 2013 9 3.39315e+00 1.66415e+00 753 2013 10 3.78005e+00 1.54152e+00 886 2013 11 7.84037e+00 1.00146e+01 306 2013 12 3.42619e+00 6.90288e-01 640 2014 1 2.28462e+00 4.55779e-01 665 2014 2 2.28748e+00 4.08494e-01 775 2014 3 2.03778e+00 2.64223e-01 805 2014 4 1.64392e+00 2.29829e-01 431 2014 5 2.60736e+00 6.17055e-01 572 2014 6 5.32502e+00 2.15491e+00 446 2014 7 2.67875e+00 6.55332e-01 372 2014 8 4.70768e+00 1.40243e+00 433 2014 9 3.42226e+00 2.16646e+00 447 2014 10 5.69017e+00 5.91072e+00 1162 2014 11 5.64623e+00 3.16334e+00 872 2014 12 2.40895e+00 3.66713e-01 802 2015 1 2.46335e+00 2.92092e-01 576 2015 2 2.13718e+00 2.22793e-01 731 2015 3 1.59913e+00 3.74950e-01 1147 2015 4 1.26033e+00 1.45396e-01 443 2015 5 2.32421e+00 4.94768e-01 917 2015 6 1.64184e+00 2.61708e-01 605 2015 7 2.55652e+00 2.94428e-01 256 2015 8 3.96295e+00 9.15889e-01 448 2015 9 3.84292e+00 1.24164e+00 315 2015 10 4.51700e+00 3.32494e+00 622 2015 11 5.04676e+00 2.34086e+00 968 2015 12 3.53053e+00 7.86444e-01 407 2016 1 6.69055e+00 6.75816e+00 384 2016 2 5.44726e+00 2.65468e+00 712 2016 3 3.25172e+00 1.05552e+00 497 2016 4 3.16113e+00 5.46594e-01 580 2016 5 1.94467e+00 4.98809e-01 826 2016 6 2.25836e+00 8.14801e-01 532 2016 7 3.12006e+00 9.86941e-01 571 2016 8 3.89128e+00 2.08954e+00 444 2016 9 3.14924e+00 1.14854e+00 779 2016 10 8.08565e+00 5.18430e+00 871 2016 11 7.31160e+00 6.05035e+00 970 2016 12 2.40366e+00 5.07760e-01 768 2017 1 2.16601e+00 3.99045e-01 806 2017 2 2.14982e+00 4.42826e-01 831 2017 3 1.75948e+00 4.38512e-01 893 2017 4 1.95284e+00 4.73441e-01 541 2017 5 1.74690e+00 4.42204e-01 707 2017 6 3.12686e+00 9.52553e-01 195 2017 7 3.06925e+00 5.75784e-01 320 2017 8 4.82344e+00 1.92495e+00 512 2017 9 7.01670e+00 6.65669e+00 930 2017 10 4.46138e+00 2.30109e+00 581 2017 11 9.62059e+00 9.16374e+00 920 2017 12 9.26898e+00 8.91733e+00 1216 2018 1 3.20189e+00 5.84134e-01 704 2018 2 3.37740e+00 1.35078e+00 966 2018 3 2.15186e+00 5.94753e-01 1086 2018 4 1.75562e+00 3.84175e-01 934 2018 5 1.73631e+00 4.27485e-01 286 2018 6 3.42058e+00 4.56375e-01 320 2018 7 5.94412e+00 5.00155e+00 418 2018 8 8.41326e+00 6.98325e+00 216 2018 9 6.18833e+00 5.35214e+00 677 2018 10 6.31515e+00 5.16120e+00 768 2018 11 1.29256e+01 1.68582e+01 487 2018 12 5.70924e+00 1.81944e+00 573 2019 1 3.21375e+00 9.70552e-01 555 2019 2 1.93623e+00 6.17392e-01 751 2019 3 1.66712e+00 3.98726e-01 887 2019 4 1.55105e+00 2.18092e-01 503 2019 5 9.83818e-01 1.56527e-01 682 2019 6 1.04893e+00 2.05169e-01 598 2019 7 1.60408e+00 2.70512e-01 384 2019 8 2.48361e+00 9.53168e-01 395 2019 9 3.57189e+00 9.82877e-01 348 2019 10 3.75142e+00 1.85229e+00 814 2019 11 1.22314e+01 8.12516e+00 738 2019 12 4.26033e+00 6.12577e+00 758 2020 1 2.17328e+00 4.13312e-01 832 2020 2 1.90755e+00 3.62361e-01 896 2020 3 1.42649e+00 2.80582e-01 1073 2020 4 1.35745e+00 3.00305e-01 448 2020 5 1.68706e+00 8.24406e-01 576 2020 6 2.01588e+00 2.43075e-01 436 2020 7 2.55115e+00 5.55485e-01 384 2020 8 2.46489e+00 4.29535e-01 425 2020 9 4.04706e+00 1.29365e+00 346 2020 10 3.38576e+00 1.52560e+00 588 2020 11 1.11359e+01 1.64296e+01 686 2020 12 1.31926e+01 1.15161e+01 600 2021 1 8.84219e+00 8.26264e+00 649 2021 2 2.80004e+00 5.39847e-01 850 2021 3 2.64326e+00 1.46970e+00 828 2021 4 1.87373e+00 4.71776e-01 829 2021 5 3.18741e+00 1.28758e+00 865 2021 6 1.68859e+00 6.49114e-01 128 2021 7 2.69218e+00 4.26080e-01 391 2021 8 2.89549e+00 6.73095e-01 330 2021 9 4.89330e+00 2.32060e+00 607 2021 10 5.93862e+00 3.73058e+00 915 2021 11 4.91144e+00 1.92409e+00 725 2021 12 3.52064e+00 9.82445e-01 1047 2022 1 2.90396e+00 4.16018e-01 701 2022 2 2.36114e+00 3.55707e-01 1054 2022 3 2.06302e+00 3.38752e-01 1013 2022 4 2.59893e+00 5.09276e-01 384 2022 5 2.11030e+00 5.85395e-01 576 2022 6 1.98949e+00 5.99158e-01 512 2022 7 1.95384e+00 9.99703e-01 322 2022 8 4.08612e+00 1.70374e+00 640 2022 9 6.90704e+00 3.46598e+00 486 2022 10 6.34806e+00 1.95026e+00 882 2022 11 1.01466e+01 7.06347e+00 768 2022 12 5.17865e+00 2.36773e+00 938 2023 1 8.61264e+00 1.45798e+01 802 2023 2 4.90815e+00 2.30018e+00 1152 2023 3 3.26813e+00 6.98930e-01 840 2023 4 1.76801e+00 4.93965e-01 527 2023 5 2.47691e+00 3.98323e-01 649 2023 6 2.67229e+00 6.80750e-01 388 2023 7 3.83876e+00 1.45645e+00 482 2023 8 3.09147e+00 8.94473e-01 343 2023 9 3.87834e+00 1.25230e+00 704 2023 10 3.20259e+00 1.63476e+00 918 2023 11 7.00660e+00 4.93758e+00 903 2023 12 2.15360e+00 7.07126e-01 315 2024 1 3.48791e+00 4.87406e-01 153 2024 2 2.08915e+00 4.28131e-01 821 2024 3 2.08453e+00 5.80795e-01 609 2024 4 nan nan 0