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 8.35357e+00 1.68951e+00 727 2002 8 6.73459e+00 1.72096e+00 734 2002 9 5.59096e+00 1.50598e+00 774 2002 10 4.36406e+00 5.35030e-01 896 2002 11 4.36729e+00 6.08249e-01 730 2002 12 4.94480e+00 4.01537e-01 492 2003 1 5.52167e+00 6.38020e-01 744 2003 2 5.14104e+00 4.46471e-01 384 2003 3 6.55230e+00 9.39228e-01 441 2003 4 7.29935e+00 1.35381e+00 368 2003 5 7.67629e+00 2.04019e+00 279 2003 6 7.96522e+00 1.71599e+00 417 2003 7 6.70885e+00 1.79235e+00 354 2003 8 6.20977e+00 2.27421e+00 706 2003 9 4.59137e+00 1.15711e+00 822 2003 10 3.89171e+00 5.80262e-01 756 2003 11 3.90138e+00 5.79086e-01 800 2003 12 3.83620e+00 3.20542e-01 412 2004 1 3.05971e+00 5.43591e-01 548 2004 2 3.53922e+00 7.63052e-01 541 2004 3 5.81206e+00 9.81818e-01 790 2004 4 6.27061e+00 1.89790e+00 323 2004 5 9.10577e+00 1.07646e+00 448 2004 6 8.08143e+00 1.47649e+00 514 2004 7 7.81481e+00 2.24438e+00 236 2004 8 5.58802e+00 1.31992e+00 563 2004 9 4.30537e+00 7.50983e-01 588 2004 10 3.89632e+00 8.30320e-01 867 2004 11 4.18168e+00 1.04076e+00 480 2004 12 3.78182e+00 5.91521e-01 510 2005 1 4.32441e+00 4.15944e-01 576 2005 2 4.63352e+00 7.30094e-01 637 2005 3 7.02586e+00 9.54076e-01 639 2005 4 6.46671e+00 1.37225e+00 391 2005 5 9.09375e+00 5.89255e-01 192 2005 6 8.12367e+00 2.09891e+00 726 2005 7 7.86344e+00 2.90643e+00 241 2005 8 6.24777e+00 1.99214e+00 368 2005 9 4.16558e+00 1.30800e+00 864 2005 10 4.33819e+00 6.85155e-01 697 2005 11 4.02349e+00 6.83598e-01 525 2005 12 3.76900e+00 5.24475e-01 873 2006 1 4.04397e+00 7.67167e-01 490 2006 2 4.63625e+00 4.94487e-01 347 2006 3 5.59203e+00 9.36712e-01 617 2006 4 8.38897e+00 1.30006e+00 398 2006 5 8.88344e+00 1.69636e+00 426 2006 6 9.89683e+00 2.07466e+00 875 2006 7 6.25826e+00 1.46482e+00 259 2006 8 4.48313e+00 8.92928e-01 115 2006 9 3.78180e+00 7.08625e-01 975 2006 10 4.28424e+00 1.21125e+00 719 2006 11 4.00780e+00 6.71378e-01 875 2006 12 3.96803e+00 7.20964e-01 595 2007 1 4.68546e+00 7.60342e-01 702 2007 2 5.04266e+00 5.45220e-01 831 2007 3 5.01086e+00 3.91287e-01 461 2007 4 4.81937e+00 5.55825e-01 90 2007 5 6.74940e+00 2.53444e+00 188 2007 6 5.50250e+00 1.99684e+00 274 2007 7 8.83175e+00 2.72740e+00 92 2007 8 7.49227e+00 1.87219e+00 695 2007 9 3.91132e+00 6.22450e-01 910 2007 10 3.65403e+00 6.37438e-01 694 2007 11 3.89226e+00 1.19835e+00 832 2007 12 3.52174e+00 4.02402e-01 617 2008 1 4.01090e+00 5.49625e-01 375 2008 2 4.30564e+00 6.59135e-01 644 2008 3 6.16715e+00 9.28982e-01 810 2008 4 8.41372e+00 1.46419e+00 209 2008 5 4.53250e+00 1.16520e+00 143 2008 6 7.91441e+00 4.47483e+00 114 2008 7 nan nan 0 2008 8 5.14085e+00 1.58526e+00 124 2008 9 3.82114e+00 9.48468e-01 438 2008 10 4.06665e+00 9.49363e-01 734 2008 11 3.74308e+00 4.91324e-01 604 2008 12 4.24020e+00 7.69253e-01 1017 2009 1 4.38886e+00 4.83768e-01 640 2009 2 4.13020e+00 8.09716e-01 320 2009 3 4.86911e+00 6.10164e-01 315 2009 4 6.79037e+00 1.18320e+00 192 2009 5 5.98953e+00 1.13316e+00 299 2009 6 5.95424e+00 1.48759e+00 180 2009 7 nan nan 0 2009 8 7.72138e+00 1.55301e+00 175 2009 9 6.58539e+00 2.07059e+00 561 2009 10 4.23091e+00 5.17357e-01 512 2009 11 3.67505e+00 6.10606e-01 670 2009 12 3.92200e+00 3.99249e-01 939 2010 1 3.88589e+00 5.36564e-01 764 2010 2 5.39754e+00 9.30059e-01 382 2010 3 6.07386e+00 1.45623e+00 550 2010 4 6.97489e+00 1.81747e+00 109 2010 5 8.86880e+00 1.74612e+00 314 2010 6 8.54120e+00 2.29976e+00 124 2010 7 8.72183e+00 2.82088e+00 399 2010 8 8.65306e+00 2.08598e+00 331 2010 9 4.39862e+00 3.84788e-01 419 2010 10 4.71826e+00 1.30482e+00 831 2010 11 4.36758e+00 6.00584e-01 1206 2010 12 3.96042e+00 6.31617e-01 768 2011 1 4.16658e+00 8.43674e-01 637 2011 2 4.48146e+00 4.72555e-01 389 2011 3 5.09001e+00 4.12092e-01 655 2011 4 5.84735e+00 3.39424e-01 250 2011 5 7.65822e+00 1.18756e+00 380 2011 6 9.64878e+00 1.13165e+00 207 2011 7 8.11033e+00 2.23007e+00 253 2011 8 8.25716e+00 1.53269e+00 318 2011 9 4.29571e+00 1.02819e+00 799 2011 10 4.05695e+00 5.77248e-01 909 2011 11 3.76598e+00 6.90402e-01 646 2011 12 4.71187e+00 6.26597e-01 865 2012 1 4.59665e+00 6.54093e-01 877 2012 2 4.48500e+00 9.02537e-01 656 2012 3 5.49182e+00 6.97596e-01 618 2012 4 5.34880e+00 1.17043e+00 251 2012 5 1.15190e+01 1.03315e+00 64 2012 6 6.84759e+00 1.50192e+00 325 2012 7 8.54006e+00 1.67026e+00 360 2012 8 9.41858e+00 2.20586e+00 311 2012 9 5.04008e+00 1.28108e+00 576 2012 10 4.69677e+00 5.62850e-01 483 2012 11 5.01373e+00 1.11811e+00 717 2012 12 4.91528e+00 6.18628e-01 456 2013 1 4.57805e+00 1.22299e+00 764 2013 2 4.85135e+00 6.24859e-01 774 2013 3 5.85800e+00 9.95436e-01 516 2013 4 8.01206e+00 1.49124e+00 204 2013 5 9.60757e+00 7.28609e-01 260 2013 6 8.31444e+00 1.63677e+00 369 2013 7 1.15867e+01 2.12986e+00 396 2013 8 8.05414e+00 1.45616e+00 534 2013 9 5.64665e+00 1.65608e+00 874 2013 10 4.59299e+00 8.44168e-01 887 2013 11 4.69404e+00 5.07842e-01 646 2013 12 4.44570e+00 8.30747e-01 966 2014 1 4.79604e+00 6.94815e-01 663 2014 2 4.90809e+00 4.30427e-01 584 2014 3 7.01004e+00 1.22560e+00 674 2014 4 8.02772e+00 1.75855e+00 536 2014 5 7.79142e+00 1.70979e+00 292 2014 6 7.22452e+00 2.19147e+00 671 2014 7 6.53143e+00 1.97504e+00 567 2014 8 8.97398e+00 2.47605e+00 375 2014 9 5.16931e+00 2.03343e+00 999 2014 10 3.73887e+00 5.20532e-01 968 2014 11 3.71310e+00 5.20859e-01 876 2014 12 3.89254e+00 5.64812e-01 1015 2015 1 4.60455e+00 6.74947e-01 820 2015 2 5.01124e+00 7.19538e-01 434 2015 3 5.83760e+00 7.06104e-01 513 2015 4 5.52849e+00 1.23346e+00 411 2015 5 6.09983e+00 1.17078e+00 222 2015 6 8.18873e+00 1.91025e+00 487 2015 7 7.58767e+00 9.77512e-01 131 2015 8 9.51877e+00 1.41149e+00 636 2015 9 3.79587e+00 5.23597e-01 693 2015 10 3.52423e+00 7.57700e-01 669 2015 11 3.31649e+00 5.20892e-01 852 2015 12 3.94538e+00 5.26035e-01 896 2016 1 3.99266e+00 3.73150e-01 829 2016 2 4.69138e+00 7.38351e-01 1066 2016 3 6.24690e+00 9.15646e-01 583 2016 4 7.51811e+00 1.44431e+00 652 2016 5 6.25255e+00 2.03394e+00 545 2016 6 7.28211e+00 2.39364e+00 393 2016 7 1.01706e+01 1.45701e+00 489 2016 8 8.48787e+00 2.13171e+00 766 2016 9 4.11680e+00 1.58385e+00 783 2016 10 4.33997e+00 9.46768e-01 1094 2016 11 4.32706e+00 7.76372e-01 690 2016 12 4.44170e+00 8.67678e-01 700 2017 1 4.01527e+00 6.86472e-01 574 2017 2 4.99955e+00 7.28085e-01 444 2017 3 6.25311e+00 9.83665e-01 752 2017 4 6.32689e+00 2.10513e+00 184 2017 5 1.05406e+01 2.40236e+00 222 2017 6 9.26525e+00 1.61047e+00 776 2017 7 9.34854e+00 2.23061e+00 460 2017 8 5.90685e+00 1.83415e+00 559 2017 9 3.94927e+00 4.82188e-01 513 2017 10 4.17564e+00 1.17452e+00 885 2017 11 3.54135e+00 6.93946e-01 799 2017 12 3.99529e+00 1.03982e+00 835 2018 1 4.19404e+00 6.29297e-01 788 2018 2 4.44920e+00 6.04381e-01 360 2018 3 5.66195e+00 1.25689e+00 931 2018 4 5.97970e+00 9.04874e-01 278 2018 5 9.77540e+00 1.59725e+00 359 2018 6 7.70670e+00 1.94558e+00 509 2018 7 8.72233e+00 1.67877e+00 394 2018 8 6.61673e+00 1.22438e+00 601 2018 9 4.88295e+00 9.12569e-01 602 2018 10 3.70895e+00 7.73602e-01 296 2018 11 3.89135e+00 7.39135e-01 478 2018 12 4.58056e+00 3.36473e-01 696 2019 1 4.60114e+00 5.06048e-01 384 2019 2 5.33783e+00 3.87664e-01 694 2019 3 6.84711e+00 7.37749e-01 898 2019 4 6.47941e+00 1.55932e+00 656 2019 5 7.08125e+00 1.25561e+00 621 2019 6 9.08257e+00 1.64764e+00 975 2019 7 8.62413e+00 8.97374e-01 623 2019 8 7.58626e+00 2.09897e+00 836 2019 9 5.14386e+00 9.34371e-01 1093 2019 10 3.95162e+00 6.58835e-01 640 2019 11 3.68823e+00 3.66039e-01 597 2019 12 4.52387e+00 3.71849e-01 595 2020 1 4.63613e+00 4.81734e-01 763 2020 2 4.56103e+00 7.07419e-01 775 2020 3 5.56091e+00 8.81135e-01 563 2020 4 6.85154e+00 1.48609e+00 350 2020 5 6.59763e+00 1.33364e+00 476 2020 6 8.50535e+00 1.03770e+00 809 2020 7 9.17719e+00 1.48029e+00 566 2020 8 4.28761e+00 8.42559e-01 182 2020 9 4.70660e+00 9.78776e-01 757 2020 10 3.96734e+00 5.73357e-01 1388 2020 11 4.11908e+00 7.57864e-01 613 2020 12 3.28805e+00 4.47518e-01 813 2021 1 3.84827e+00 4.60363e-01 1082 2021 2 4.25132e+00 4.53916e-01 836 2021 3 4.39292e+00 6.40621e-01 480 2021 4 6.39666e+00 1.36181e+00 368 2021 5 1.00305e+01 2.11496e+00 640 2021 6 8.03072e+00 1.85422e+00 702 2021 7 9.04437e+00 1.78232e+00 652 2021 8 5.78047e+00 1.58051e+00 680 2021 9 4.44359e+00 9.15663e-01 971 2021 10 4.41560e+00 1.03224e+00 1239 2021 11 3.54535e+00 7.77024e-01 735 2021 12 4.27698e+00 8.15475e-01 471 2022 1 4.38762e+00 9.63369e-01 711 2022 2 5.41542e+00 8.80052e-01 815 2022 3 4.99301e+00 7.32423e-01 388 2022 4 8.82246e+00 5.33786e-01 103 2022 5 9.89427e+00 1.23696e+00 244 2022 6 1.14364e+01 1.15318e+00 409 2022 7 9.82652e+00 2.08423e+00 302 2022 8 5.93774e+00 1.22156e+00 548 2022 9 4.84634e+00 7.63308e-01 1007 2022 10 4.75250e+00 9.09331e-01 745 2022 11 5.28622e+00 7.04752e-01 449 2022 12 4.30086e+00 7.88635e-01 729 2023 1 4.75395e+00 4.91841e-01 384 2023 2 4.43505e+00 1.59978e+00 514 2023 3 7.55655e+00 9.57716e-01 970 2023 4 7.27085e+00 1.06602e+00 723 2023 5 8.15373e+00 9.99219e-01 392 2023 6 9.11123e+00 1.09866e+00 896 2023 7 8.18301e+00 8.51848e-01 875 2023 8 6.94473e+00 1.05092e+00 341 2023 9 4.48751e+00 1.01304e+00 885 2023 10 3.99596e+00 9.34974e-01 896 2023 11 3.89663e+00 9.35623e-01 522 2023 12 3.88007e+00 5.92038e-01 850 2024 1 4.92753e+00 4.50905e-01 799 2024 2 4.79010e+00 3.44054e-01 1148 2024 3 4.99717e+00 6.85244e-01 810 2024 4 7.73786e+00 8.24853e-01 190