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 6.26203e-01 1.52825e-01 871 2002 8 1.00361e+00 3.45471e-01 731 2002 9 1.28066e+00 2.84586e-01 1075 2002 10 1.59873e+00 3.23875e-01 732 2002 11 1.53655e+00 1.65600e-01 921 2002 12 1.38347e+00 2.10600e-01 449 2003 1 1.21913e+00 2.72115e-01 766 2003 2 1.25583e+00 2.42872e-01 623 2003 3 1.06000e+00 3.46216e-01 574 2003 4 6.68926e-01 1.73985e-01 384 2003 5 8.07177e-01 5.64516e-01 345 2003 6 4.24636e-01 9.27101e-02 704 2003 7 8.60089e-01 2.50324e-01 617 2003 8 9.20442e-01 5.29678e-01 1073 2003 9 1.80598e+00 7.84479e-01 1241 2003 10 1.49350e+00 3.21323e-01 764 2003 11 1.46703e+00 2.38186e-01 831 2003 12 1.41180e+00 1.77025e-01 533 2004 1 1.51680e+00 3.38733e-01 648 2004 2 1.38594e+00 2.75293e-01 640 2004 3 1.01355e+00 2.15359e-01 836 2004 4 6.72154e-01 2.05824e-01 382 2004 5 1.45603e+00 1.18537e+00 509 2004 6 9.24478e-01 3.13210e-01 843 2004 7 6.00455e-01 1.42974e-01 906 2004 8 1.09645e+00 3.83839e-01 884 2004 9 1.63567e+00 5.54891e-01 925 2004 10 1.50626e+00 3.80951e-01 735 2004 11 2.20323e+00 2.35301e-01 256 2004 12 1.47559e+00 2.09382e-01 564 2005 1 1.36217e+00 1.91654e-01 588 2005 2 1.21921e+00 1.07078e-01 493 2005 3 8.68295e-01 2.37492e-01 838 2005 4 7.16398e-01 1.67732e-01 646 2005 5 7.12621e-01 3.41195e-01 383 2005 6 1.17799e+00 5.36402e-01 558 2005 7 1.10920e+00 2.04741e-01 192 2005 8 1.17122e+00 5.80273e-01 866 2005 9 2.27796e+00 1.18552e+00 1364 2005 10 1.94670e+00 6.18868e-01 1142 2005 11 1.58101e+00 2.51094e-01 640 2005 12 1.59810e+00 2.13923e-01 903 2006 1 1.46202e+00 3.06517e-01 655 2006 2 1.00911e+00 2.09456e-01 436 2006 3 8.66965e-01 4.83243e-01 977 2006 4 5.69169e-01 1.40841e-01 450 2006 5 6.96032e-01 1.58016e-01 268 2006 6 9.35473e-01 4.73551e-01 1098 2006 7 8.36805e-01 2.64735e-01 512 2006 8 1.59475e+00 7.80326e-01 208 2006 9 1.75708e+00 4.37554e-01 1051 2006 10 1.60731e+00 3.30443e-01 769 2006 11 1.60955e+00 3.11985e-01 977 2006 12 1.77066e+00 6.32926e-01 748 2007 1 1.48507e+00 3.54156e-01 917 2007 2 1.30982e+00 2.38337e-01 1022 2007 3 9.66771e-01 1.33990e-01 686 2007 4 9.00205e-01 6.47868e-02 128 2007 5 7.82163e-01 3.78460e-01 128 2007 6 8.86790e-01 1.58907e-01 697 2007 7 1.19458e+00 3.77303e-01 260 2007 8 8.54136e-01 3.63980e-01 566 2007 9 1.67270e+00 3.51050e-01 996 2007 10 1.75915e+00 4.85462e-01 832 2007 11 1.55175e+00 2.17191e-01 918 2007 12 1.42032e+00 1.17334e-01 640 2008 1 1.20337e+00 1.41898e-01 288 2008 2 1.38379e+00 2.31164e-01 399 2008 3 1.00988e+00 2.10999e-01 704 2008 4 6.14570e-01 1.53906e-01 376 2008 5 7.61634e-01 1.01442e-01 64 2008 6 8.88336e-01 7.40267e-01 108 2008 7 1.28335e+00 4.71144e-01 233 2008 8 1.91550e+00 6.62898e-01 203 2008 9 2.72955e+00 1.06222e+00 246 2008 10 2.09755e+00 7.20290e-01 625 2008 11 1.59971e+00 1.51955e-01 623 2008 12 1.45807e+00 2.77257e-01 955 2009 1 1.04427e+00 2.09014e-01 846 2009 2 1.15244e+00 3.51044e-01 320 2009 3 1.06782e+00 2.21426e-01 427 2009 4 6.29582e-01 1.93332e-01 83 2009 5 7.68442e-01 2.38347e-01 282 2009 6 7.82576e-01 2.60202e-01 448 2009 7 1.47352e+00 2.32553e-01 176 2009 8 1.08051e+00 2.96876e-01 415 2009 9 1.55430e+00 7.86968e-01 366 2009 10 2.31641e+00 6.07812e-01 522 2009 11 1.57280e+00 5.66789e-01 405 2009 12 1.27520e+00 3.44985e-01 568 2010 1 1.21091e+00 1.92284e-01 889 2010 2 1.04632e+00 1.34078e-01 494 2010 3 7.65759e-01 2.26295e-01 541 2010 4 8.92996e-01 2.11360e-01 267 2010 5 1.02794e+00 1.67378e-01 444 2010 6 8.13467e-01 2.04874e-01 427 2010 7 6.77794e-01 2.58271e-01 545 2010 8 1.00758e+00 4.23089e-01 170 2010 9 1.11204e+00 4.37440e-01 664 2010 10 2.03504e+00 8.36215e-01 895 2010 11 1.44237e+00 2.21364e-01 1304 2010 12 1.28842e+00 3.70614e-01 954 2011 1 1.11601e+00 1.47996e-01 510 2011 2 1.04174e+00 1.82945e-01 433 2011 3 8.95726e-01 1.86348e-01 756 2011 4 1.11865e+00 2.90560e-01 262 2011 5 6.28301e-01 3.68671e-01 247 2011 6 5.89615e-01 7.74410e-02 412 2011 7 6.02407e-01 2.02254e-01 444 2011 8 7.48204e-01 2.59327e-01 982 2011 9 1.41046e+00 4.38858e-01 884 2011 10 1.65027e+00 4.66536e-01 737 2011 11 1.58668e+00 1.57939e-01 436 2011 12 1.38035e+00 2.20773e-01 1088 2012 1 1.26634e+00 1.90862e-01 774 2012 2 1.46642e+00 2.05184e-01 679 2012 3 1.23025e+00 1.71655e-01 519 2012 4 5.84859e-01 1.42128e-01 256 2012 5 nan nan 0 2012 6 5.08924e-01 1.27448e-01 368 2012 7 6.98371e-01 1.21722e-01 311 2012 8 7.18078e-01 3.55657e-01 555 2012 9 1.19437e+00 2.98296e-01 754 2012 10 1.10105e+00 4.23570e-01 787 2012 11 1.14774e+00 2.50231e-01 640 2012 12 1.09434e+00 1.84489e-01 308 2013 1 9.84531e-01 2.06683e-01 526 2013 2 9.42010e-01 1.04908e-01 699 2013 3 1.02838e+00 2.03791e-01 798 2013 4 5.99972e-01 2.57372e-01 256 2013 5 3.63415e-01 5.48309e-02 370 2013 6 7.12487e-01 4.06309e-01 663 2013 7 5.13543e-01 8.88667e-02 562 2013 8 1.07120e+00 5.70880e-01 866 2013 9 1.12199e+00 3.85146e-01 1002 2013 10 1.34585e+00 3.21596e-01 977 2013 11 1.15015e+00 2.44909e-01 528 2013 12 1.18869e+00 2.07682e-01 928 2014 1 8.54073e-01 2.36968e-01 653 2014 2 8.32994e-01 1.44794e-01 830 2014 3 6.31550e-01 1.39676e-01 629 2014 4 7.32750e-01 3.50631e-01 512 2014 5 5.59461e-01 1.46514e-01 512 2014 6 3.94621e-01 8.39049e-02 701 2014 7 6.36746e-01 2.02560e-01 847 2014 8 7.91962e-01 2.26194e-01 583 2014 9 1.02383e+00 3.78942e-01 1050 2014 10 1.40319e+00 3.86790e-01 984 2014 11 1.36235e+00 2.59459e-01 884 2014 12 1.11575e+00 2.12267e-01 1151 2015 1 1.10092e+00 1.66037e-01 689 2015 2 7.83092e-01 1.46362e-01 576 2015 3 6.71611e-01 1.37523e-01 736 2015 4 1.31581e+00 7.99485e-01 337 2015 5 1.03662e+00 3.31409e-01 324 2015 6 6.74784e-01 2.18032e-01 690 2015 7 1.22830e+00 1.60361e-01 128 2015 8 7.40432e-01 3.06003e-01 677 2015 9 1.47838e+00 2.87249e-01 258 2015 10 1.67936e+00 3.02279e-01 422 2015 11 1.89405e+00 1.13456e+00 680 2015 12 1.50283e+00 1.94762e-01 842 2016 1 1.30510e+00 1.49903e-01 919 2016 2 1.18988e+00 1.45429e-01 1203 2016 3 1.00226e+00 2.92111e-01 613 2016 4 5.71491e-01 1.87725e-01 749 2016 5 6.32320e-01 2.38198e-01 704 2016 6 3.79131e-01 1.17311e-01 705 2016 7 5.67366e-01 1.63918e-01 745 2016 8 6.43446e-01 2.23375e-01 768 2016 9 1.52917e+00 3.70704e-01 842 2016 10 1.81031e+00 5.37846e-01 929 2016 11 1.57909e+00 3.78827e-01 533 2016 12 1.51347e+00 2.95796e-01 600 2017 1 1.49023e+00 2.12311e-01 576 2017 2 1.06877e+00 1.47648e-01 640 2017 3 8.76494e-01 2.07071e-01 667 2017 4 3.66543e-01 3.69698e-02 320 2017 5 7.35200e-01 1.82263e-01 328 2017 6 5.16006e-01 1.91806e-01 973 2017 7 7.16172e-01 2.13389e-01 312 2017 8 5.43169e-01 2.23500e-01 576 2017 9 1.30160e+00 4.50457e-01 318 2017 10 2.52663e+00 1.04160e+00 784 2017 11 1.49730e+00 2.21394e-01 606 2017 12 1.36833e+00 2.89060e-01 839 2018 1 1.08430e+00 2.56066e-01 1011 2018 2 1.30163e+00 1.69500e-01 576 2018 3 1.03522e+00 2.96805e-01 831 2018 4 7.69925e-01 1.90790e-01 384 2018 5 8.42537e-01 1.35715e-01 530 2018 6 7.14337e-01 2.00986e-01 534 2018 7 6.80025e-01 1.96718e-01 842 2018 8 1.23926e+00 4.95948e-01 885 2018 9 1.22421e+00 3.53577e-01 862 2018 10 1.38526e+00 5.21724e-01 340 2018 11 1.35625e+00 1.46694e-01 506 2018 12 1.33200e+00 1.44142e-01 619 2019 1 1.33036e+00 1.23252e-01 320 2019 2 1.17171e+00 1.64884e-01 698 2019 3 1.07351e+00 1.49958e-01 932 2019 4 6.92099e-01 2.25516e-01 684 2019 5 1.32693e+00 5.03232e-01 793 2019 6 5.18714e-01 2.11283e-01 996 2019 7 4.19838e-01 8.79109e-02 936 2019 8 7.04194e-01 1.92934e-01 1137 2019 9 1.45694e+00 3.62827e-01 1283 2019 10 1.61289e+00 2.47225e-01 680 2019 11 1.60152e+00 1.56972e-01 623 2019 12 1.54480e+00 3.49191e-01 450 2020 1 1.10679e+00 1.48558e-01 894 2020 2 1.18648e+00 1.52562e-01 865 2020 3 1.12070e+00 3.14883e-01 832 2020 4 6.61006e-01 1.27855e-01 485 2020 5 6.23686e-01 3.48991e-01 527 2020 6 3.81596e-01 9.50540e-02 974 2020 7 6.08122e-01 1.77761e-01 814 2020 8 9.35225e-01 3.30467e-01 512 2020 9 2.28301e+00 8.45878e-01 879 2020 10 1.79991e+00 3.76623e-01 1406 2020 11 1.74834e+00 4.46456e-01 521 2020 12 1.81154e+00 3.95997e-01 530 2021 1 1.46941e+00 2.33358e-01 826 2021 2 1.23376e+00 1.39662e-01 778 2021 3 1.14131e+00 1.40652e-01 638 2021 4 5.69595e-01 9.22968e-02 257 2021 5 3.90993e-01 8.06114e-02 613 2021 6 4.30385e-01 1.09742e-01 897 2021 7 6.11049e-01 1.19396e-01 896 2021 8 1.43404e+00 1.58678e+00 804 2021 9 2.49470e+00 1.76522e+00 1044 2021 10 1.54188e+00 1.98624e-01 1249 2021 11 1.77501e+00 3.08006e-01 702 2021 12 1.53026e+00 3.50377e-01 548 2022 1 1.19376e+00 2.35913e-01 614 2022 2 1.03983e+00 1.56242e-01 768 2022 3 1.26211e+00 2.96742e-01 512 2022 4 1.16506e+00 3.24644e-01 128 2022 5 4.95424e-01 8.08628e-02 384 2022 6 4.83125e-01 1.09417e-01 373 2022 7 6.06516e-01 2.35312e-01 402 2022 8 6.22933e-01 1.53911e-01 384 2022 9 1.02493e+00 3.07630e-01 760 2022 10 1.37342e+00 3.50918e-01 1024 2022 11 1.48852e+00 2.31163e-01 382 2022 12 1.24905e+00 3.04322e-01 697 2023 1 1.12313e+00 1.24897e-01 448 2023 2 1.01357e+00 2.06197e-01 478 2023 3 6.09003e-01 1.19317e-01 609 2023 4 6.93978e-01 1.25206e-01 787 2023 5 5.88982e-01 1.47441e-01 448 2023 6 5.42285e-01 1.32796e-01 877 2023 7 5.02586e-01 8.46542e-02 829 2023 8 7.12400e-01 2.49207e-01 681 2023 9 1.56069e+00 5.75322e-01 808 2023 10 1.93053e+00 2.76239e-01 751 2023 11 1.80705e+00 3.21337e-01 585 2023 12 1.78858e+00 4.66212e-01 740 2024 1 1.40719e+00 2.58368e-01 1016 2024 2 1.00246e+00 1.49106e-01 1121 2024 3 8.17971e-01 1.12763e-01 730 2024 4 5.88568e-01 7.50255e-02 128