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 8.27470e+00 1.14868e+00 871 2002 8 6.42923e+00 1.36285e+00 731 2002 9 4.98060e+00 1.14956e+00 1075 2002 10 4.48467e+00 8.12513e-01 732 2002 11 3.21703e+00 4.12977e-01 921 2002 12 3.99823e+00 6.33821e-01 449 2003 1 4.68476e+00 1.14615e+00 766 2003 2 4.20800e+00 5.55617e-01 623 2003 3 5.22723e+00 1.39245e+00 574 2003 4 7.13755e+00 1.65283e+00 384 2003 5 7.68502e+00 2.71981e+00 346 2003 6 1.02939e+01 1.44675e+00 704 2003 7 7.12694e+00 1.44016e+00 617 2003 8 6.95038e+00 1.18850e+00 1073 2003 9 4.49972e+00 1.32915e+00 1241 2003 10 4.33519e+00 8.07536e-01 764 2003 11 3.98139e+00 8.33471e-01 831 2003 12 3.61231e+00 5.60588e-01 533 2004 1 3.94891e+00 5.36905e-01 648 2004 2 4.04610e+00 6.30399e-01 640 2004 3 5.38135e+00 8.61178e-01 836 2004 4 7.48176e+00 1.51500e+00 382 2004 5 5.92339e+00 1.91355e+00 509 2004 6 6.98738e+00 1.17696e+00 843 2004 7 8.31797e+00 1.31562e+00 906 2004 8 6.21766e+00 1.34968e+00 884 2004 9 4.52572e+00 1.21364e+00 925 2004 10 4.45508e+00 8.75287e-01 735 2004 11 3.25026e+00 5.35612e-01 256 2004 12 4.09235e+00 6.34151e-01 564 2005 1 4.47394e+00 4.20956e-01 588 2005 2 4.37257e+00 5.24457e-01 493 2005 3 6.04859e+00 1.33624e+00 838 2005 4 6.83625e+00 1.32751e+00 646 2005 5 7.92696e+00 1.46620e+00 383 2005 6 6.22789e+00 1.29092e+00 558 2005 7 5.92656e+00 7.91323e-01 192 2005 8 6.40903e+00 1.88333e+00 866 2005 9 3.65107e+00 7.75836e-01 1364 2005 10 3.92798e+00 8.39357e-01 1142 2005 11 3.74243e+00 4.28284e-01 640 2005 12 3.36743e+00 5.20586e-01 903 2006 1 4.05685e+00 6.36590e-01 655 2006 2 5.20658e+00 1.03886e+00 436 2006 3 6.40149e+00 1.56808e+00 977 2006 4 8.24292e+00 1.51180e+00 450 2006 5 7.68915e+00 1.16744e+00 281 2006 6 7.13024e+00 1.96621e+00 1103 2006 7 7.27630e+00 1.34908e+00 512 2006 8 4.68497e+00 1.52156e+00 233 2006 9 3.93841e+00 1.00546e+00 1051 2006 10 4.02459e+00 8.12948e-01 769 2006 11 3.43247e+00 7.84641e-01 977 2006 12 3.18643e+00 7.60629e-01 748 2007 1 4.24809e+00 5.75127e-01 917 2007 2 4.64184e+00 7.07473e-01 1022 2007 3 5.85483e+00 7.61100e-01 686 2007 4 6.05490e+00 4.68819e-01 128 2007 5 7.81987e+00 2.27520e+00 128 2007 6 6.94463e+00 9.02062e-01 697 2007 7 5.80337e+00 1.05188e+00 260 2007 8 7.22322e+00 1.44280e+00 566 2007 9 4.02253e+00 9.08227e-01 996 2007 10 3.92129e+00 6.64867e-01 832 2007 11 3.61359e+00 5.44177e-01 918 2007 12 3.90283e+00 5.72588e-01 640 2008 1 4.53681e+00 7.24762e-01 288 2008 2 4.72785e+00 5.02104e-01 399 2008 3 5.98075e+00 8.45369e-01 704 2008 4 8.00949e+00 1.33599e+00 376 2008 5 7.17403e+00 6.05315e-01 64 2008 6 7.53739e+00 3.98399e+00 113 2008 7 5.62601e+00 1.90510e+00 233 2008 8 4.04343e+00 1.27118e+00 210 2008 9 3.15161e+00 5.07367e-01 246 2008 10 3.32421e+00 5.50595e-01 625 2008 11 3.48585e+00 6.18731e-01 623 2008 12 4.28995e+00 6.66990e-01 955 2009 1 5.53285e+00 8.86038e-01 846 2009 2 5.59203e+00 1.27109e+00 320 2009 3 5.37898e+00 6.62445e-01 427 2009 4 7.60344e+00 1.20432e+00 83 2009 5 7.59634e+00 1.15292e+00 282 2009 6 7.35363e+00 1.51931e+00 448 2009 7 5.00177e+00 4.65832e-01 176 2009 8 6.02962e+00 1.06656e+00 415 2009 9 4.85148e+00 1.49233e+00 366 2009 10 3.68902e+00 7.22580e-01 522 2009 11 4.49571e+00 8.24896e-01 405 2009 12 4.81643e+00 1.26270e+00 568 2010 1 4.62639e+00 6.07069e-01 889 2010 2 5.07305e+00 5.39213e-01 494 2010 3 6.42758e+00 1.20425e+00 541 2010 4 5.95458e+00 1.19117e+00 267 2010 5 6.30471e+00 5.97806e-01 444 2010 6 7.07743e+00 1.18452e+00 427 2010 7 7.73386e+00 1.92955e+00 545 2010 8 6.55617e+00 1.65298e+00 170 2010 9 6.05622e+00 1.29953e+00 664 2010 10 4.04577e+00 6.92968e-01 895 2010 11 4.32964e+00 6.04303e-01 1304 2010 12 4.99119e+00 1.17208e+00 954 2011 1 4.85340e+00 4.83656e-01 510 2011 2 5.18635e+00 5.22865e-01 433 2011 3 5.93613e+00 1.04965e+00 756 2011 4 5.37692e+00 8.90329e-01 298 2011 5 9.01172e+00 2.04174e+00 249 2011 6 8.19889e+00 7.60120e-01 412 2011 7 8.69201e+00 1.95583e+00 444 2011 8 7.75217e+00 1.62098e+00 982 2011 9 4.97792e+00 1.05432e+00 884 2011 10 4.10604e+00 8.48828e-01 737 2011 11 4.05100e+00 7.28655e-01 436 2011 12 4.18575e+00 8.97972e-01 1088 2012 1 4.39921e+00 7.55525e-01 774 2012 2 4.17313e+00 6.28942e-01 679 2012 3 4.92476e+00 5.25238e-01 519 2012 4 8.22673e+00 1.10807e+00 256 2012 5 nan nan 0 2012 6 9.24330e+00 1.42040e+00 383 2012 7 7.74675e+00 8.91560e-01 311 2012 8 8.17287e+00 2.05326e+00 555 2012 9 5.49417e+00 1.04194e+00 754 2012 10 5.86944e+00 1.34997e+00 787 2012 11 5.39645e+00 1.08320e+00 640 2012 12 5.36778e+00 6.40215e-01 308 2013 1 5.16900e+00 1.06079e+00 526 2013 2 5.34116e+00 5.45195e-01 699 2013 3 5.47457e+00 8.14490e-01 800 2013 4 8.17647e+00 2.00679e+00 256 2013 5 1.01492e+01 1.01962e+00 370 2013 6 8.35190e+00 2.53987e+00 663 2013 7 8.90078e+00 1.04451e+00 562 2013 8 6.65994e+00 2.03264e+00 866 2013 9 5.89721e+00 1.42063e+00 1003 2013 10 4.75481e+00 1.25474e+00 978 2013 11 4.94759e+00 1.06061e+00 528 2013 12 4.80563e+00 1.10299e+00 928 2014 1 5.94132e+00 1.43793e+00 653 2014 2 6.12938e+00 7.61032e-01 830 2014 3 7.36159e+00 1.07590e+00 629 2014 4 7.39746e+00 2.04238e+00 512 2014 5 8.88738e+00 1.25715e+00 512 2014 6 1.07136e+01 1.33358e+00 701 2014 7 8.07924e+00 1.36369e+00 847 2014 8 7.28415e+00 1.45648e+00 592 2014 9 6.26703e+00 1.86498e+00 1050 2014 10 4.65065e+00 1.06644e+00 984 2014 11 4.56474e+00 7.23518e-01 884 2014 12 4.99671e+00 9.14579e-01 1151 2015 1 4.84774e+00 4.41757e-01 689 2015 2 5.93341e+00 9.35505e-01 576 2015 3 6.81067e+00 1.14955e+00 736 2015 4 5.86192e+00 1.41255e+00 338 2015 5 6.01435e+00 1.13089e+00 332 2015 6 8.14625e+00 1.31745e+00 690 2015 7 5.96587e+00 3.49766e-01 128 2015 8 7.82315e+00 1.75409e+00 677 2015 9 4.66553e+00 7.32441e-01 258 2015 10 4.08816e+00 5.35998e-01 422 2015 11 3.73849e+00 8.39809e-01 680 2015 12 3.97383e+00 6.07304e-01 842 2016 1 4.54812e+00 5.26276e-01 919 2016 2 4.84024e+00 6.07031e-01 1203 2016 3 5.70055e+00 1.20179e+00 613 2016 4 7.98725e+00 1.83712e+00 752 2016 5 8.57518e+00 1.64843e+00 704 2016 6 1.08111e+01 1.81093e+00 705 2016 7 8.44295e+00 1.51703e+00 745 2016 8 8.31963e+00 1.76199e+00 768 2016 9 4.41354e+00 1.35695e+00 868 2016 10 4.15688e+00 8.90924e-01 929 2016 11 4.21206e+00 6.59538e-01 533 2016 12 3.83627e+00 5.90420e-01 600 2017 1 3.66281e+00 7.23507e-01 576 2017 2 5.21358e+00 7.52972e-01 640 2017 3 6.01802e+00 1.23833e+00 667 2017 4 1.05304e+01 8.02166e-01 320 2017 5 7.37806e+00 1.03316e+00 328 2017 6 9.49025e+00 1.83872e+00 973 2017 7 8.25286e+00 1.58255e+00 312 2017 8 9.34847e+00 2.01978e+00 576 2017 9 5.76527e+00 1.25175e+00 318 2017 10 3.42066e+00 6.60179e-01 784 2017 11 3.74091e+00 7.50499e-01 606 2017 12 4.22425e+00 1.07605e+00 839 2018 1 5.29733e+00 8.16072e-01 1011 2018 2 4.55515e+00 7.12458e-01 576 2018 3 5.96579e+00 1.07116e+00 831 2018 4 7.28916e+00 9.06133e-01 384 2018 5 6.82930e+00 8.32894e-01 530 2018 6 7.30601e+00 1.52232e+00 564 2018 7 7.97871e+00 1.23462e+00 842 2018 8 6.01454e+00 1.76635e+00 885 2018 9 5.83280e+00 1.26134e+00 862 2018 10 5.45749e+00 1.40383e+00 340 2018 11 4.35450e+00 8.00255e-01 506 2018 12 4.42133e+00 4.86317e-01 619 2019 1 4.22120e+00 5.87462e-01 320 2019 2 4.90938e+00 4.75858e-01 698 2019 3 5.16101e+00 6.69484e-01 932 2019 4 7.12221e+00 1.40515e+00 684 2019 5 5.80294e+00 1.05477e+00 793 2019 6 9.70740e+00 2.15255e+00 1014 2019 7 1.02864e+01 1.22115e+00 936 2019 8 7.97716e+00 1.20752e+00 1137 2019 9 4.72078e+00 1.30976e+00 1283 2019 10 3.76766e+00 6.41684e-01 680 2019 11 3.81639e+00 5.40780e-01 623 2019 12 4.44777e+00 5.83071e-01 450 2020 1 4.95555e+00 4.55436e-01 894 2020 2 4.68606e+00 6.04666e-01 865 2020 3 5.19718e+00 9.52321e-01 832 2020 4 7.08196e+00 1.03684e+00 485 2020 5 8.92949e+00 2.19890e+00 527 2020 6 1.09133e+01 1.66963e+00 974 2020 7 8.48306e+00 1.41922e+00 814 2020 8 7.08265e+00 1.25775e+00 512 2020 9 3.95081e+00 8.44541e-01 879 2020 10 4.00190e+00 6.82107e-01 1406 2020 11 4.20513e+00 7.55358e-01 521 2020 12 3.89418e+00 4.71731e-01 530 2021 1 4.22224e+00 4.08017e-01 826 2021 2 4.76303e+00 4.07028e-01 778 2021 3 5.02804e+00 5.90320e-01 638 2021 4 8.08453e+00 6.37974e-01 257 2021 5 1.05835e+01 1.38732e+00 627 2021 6 1.01119e+01 1.59561e+00 897 2021 7 8.43198e+00 1.26874e+00 896 2021 8 6.09925e+00 1.99473e+00 793 2021 9 4.04571e+00 8.58135e-01 1044 2021 10 3.98432e+00 6.56422e-01 1249 2021 11 3.76754e+00 7.35270e-01 702 2021 12 4.43648e+00 7.87164e-01 548 2022 1 5.03093e+00 7.89993e-01 614 2022 2 5.31227e+00 6.55936e-01 768 2022 3 4.94564e+00 5.82642e-01 512 2022 4 5.67494e+00 1.13657e+00 128 2022 5 9.31173e+00 1.05071e+00 384 2022 6 9.63807e+00 1.21492e+00 373 2022 7 9.26898e+00 1.81337e+00 402 2022 8 8.71307e+00 1.38663e+00 384 2022 9 6.62078e+00 1.20414e+00 760 2022 10 4.66283e+00 9.57622e-01 1024 2022 11 4.44100e+00 8.64883e-01 382 2022 12 4.86395e+00 1.05084e+00 697 2023 1 4.78537e+00 6.99337e-01 448 2023 2 5.74492e+00 1.06392e+00 478 2023 3 8.26568e+00 8.87557e-01 609 2023 4 7.58599e+00 6.87106e-01 787 2023 5 8.31352e+00 1.01010e+00 448 2023 6 9.10846e+00 1.20470e+00 877 2023 7 9.21614e+00 8.98621e-01 829 2023 8 7.76276e+00 1.27850e+00 681 2023 9 5.22658e+00 1.11845e+00 808 2023 10 3.63834e+00 7.49553e-01 751 2023 11 3.40803e+00 1.10037e+00 585 2023 12 3.91853e+00 9.91144e-01 740 2024 1 4.74100e+00 6.20780e-01 1016 2024 2 5.91336e+00 7.58441e-01 1121 2024 3 6.74554e+00 7.32251e-01 730 2024 4 8.10095e+00 7.32301e-01 128