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 7.34073e+00 2.45642e+00 664 2002 8 4.47885e+00 7.99020e-01 694 2002 9 5.57528e+00 1.33239e+00 1022 2002 10 4.33044e+00 8.72977e-01 703 2002 11 3.99536e+00 5.60100e-01 851 2002 12 5.13006e+00 8.68854e-01 371 2003 1 5.37582e+00 7.53209e-01 1127 2003 2 4.60137e+00 6.90027e-01 357 2003 3 4.53414e+00 4.27784e-01 437 2003 4 5.50378e+00 1.05156e+00 273 2003 5 6.16349e+00 1.23306e+00 136 2003 6 7.40616e+00 2.10689e+00 503 2003 7 5.84440e+00 1.31429e+00 414 2003 8 4.33173e+00 8.37107e-01 701 2003 9 4.76070e+00 1.29820e+00 842 2003 10 4.53926e+00 1.38549e+00 963 2003 11 4.17494e+00 9.63292e-01 768 2003 12 4.20028e+00 1.20222e+00 538 2004 1 4.79065e+00 7.82167e-01 492 2004 2 3.99596e+00 5.38834e-01 577 2004 3 4.97083e+00 8.97180e-01 732 2004 4 5.60845e+00 1.30052e+00 265 2004 5 6.22306e+00 1.01883e+00 255 2004 6 7.21005e+00 1.10580e+00 575 2004 7 6.21721e+00 1.62360e+00 681 2004 8 4.46722e+00 8.78558e-01 774 2004 9 4.55023e+00 9.15881e-01 780 2004 10 4.54307e+00 8.02630e-01 625 2004 11 3.82329e+00 5.32673e-01 295 2004 12 4.10643e+00 8.10316e-01 517 2005 1 4.61971e+00 6.14075e-01 803 2005 2 4.21302e+00 6.02988e-01 548 2005 3 4.21109e+00 7.43470e-01 646 2005 4 5.47999e+00 1.51284e+00 394 2005 5 6.32767e+00 9.91974e-01 269 2005 6 5.26995e+00 1.51781e+00 400 2005 7 6.06804e+00 1.92856e+00 203 2005 8 4.65840e+00 1.09054e+00 726 2005 9 3.80810e+00 6.73456e-01 813 2005 10 4.43792e+00 1.23449e+00 1108 2005 11 4.14180e+00 8.76798e-01 381 2005 12 4.13057e+00 1.16271e+00 781 2006 1 3.82667e+00 3.87184e-01 448 2006 2 4.74571e+00 8.96039e-01 420 2006 3 5.04569e+00 9.99725e-01 832 2006 4 5.69332e+00 1.16583e+00 393 2006 5 6.57384e+00 8.26234e-01 65 2006 6 6.60067e+00 1.25217e+00 525 2006 7 5.57712e+00 1.52638e+00 292 2006 8 4.28542e+00 2.09663e+00 196 2006 9 4.52989e+00 1.02258e+00 949 2006 10 5.02167e+00 9.36295e-01 885 2006 11 3.68961e+00 8.21951e-01 734 2006 12 4.12529e+00 5.94809e-01 802 2007 1 4.71742e+00 6.31271e-01 873 2007 2 4.88279e+00 7.76856e-01 813 2007 3 5.00524e+00 6.71805e-01 611 2007 4 4.55500e+00 6.86385e-01 192 2007 5 6.11009e+00 6.48072e-01 78 2007 6 6.40985e+00 8.80301e-01 492 2007 7 4.32831e+00 1.17023e+00 262 2007 8 5.41483e+00 1.60233e+00 687 2007 9 3.77141e+00 1.29805e+00 830 2007 10 4.00307e+00 1.19677e+00 713 2007 11 3.49240e+00 5.50691e-01 899 2007 12 3.55783e+00 6.12806e-01 568 2008 1 4.49054e+00 6.15673e-01 443 2008 2 4.14833e+00 5.33127e-01 508 2008 3 5.50404e+00 7.64770e-01 410 2008 4 4.74632e+00 1.67908e+00 119 2008 5 7.55483e+00 1.26371e+00 66 2008 6 5.22095e+00 2.96644e+00 163 2008 7 5.74150e+00 1.78009e+00 283 2008 8 3.55179e+00 1.16160e+00 106 2008 9 3.57296e+00 1.18878e+00 226 2008 10 3.60754e+00 6.74657e-01 512 2008 11 3.86878e+00 4.81775e-01 404 2008 12 4.85861e+00 1.33673e+00 950 2009 1 4.80734e+00 7.26639e-01 733 2009 2 4.92862e+00 1.51684e+00 320 2009 3 4.13598e+00 8.30146e-01 428 2009 4 4.89651e+00 4.79055e-01 58 2009 5 6.35523e+00 1.59145e+00 187 2009 6 5.37809e+00 1.53227e+00 350 2009 7 6.97111e+00 7.12338e-01 109 2009 8 5.64030e+00 1.60329e+00 374 2009 9 4.42379e+00 8.41838e-01 433 2009 10 3.82910e+00 8.40857e-01 429 2009 11 3.49680e+00 7.32819e-01 465 2009 12 4.29776e+00 6.21227e-01 695 2010 1 4.55358e+00 8.02594e-01 704 2010 2 5.01990e+00 9.41458e-01 508 2010 3 6.11233e+00 1.04470e+00 493 2010 4 5.21928e+00 6.52097e-01 176 2010 5 4.90194e+00 7.72890e-01 199 2010 6 3.38998e+00 5.68616e-01 70 2010 7 7.02255e+00 1.08538e+00 410 2010 8 5.47013e+00 1.25104e+00 128 2010 9 3.57393e+00 1.36729e+00 525 2010 10 4.05225e+00 1.16048e+00 685 2010 11 4.38465e+00 8.12393e-01 1018 2010 12 3.89391e+00 5.99436e-01 736 2011 1 4.58710e+00 6.54687e-01 651 2011 2 4.42226e+00 6.89402e-01 438 2011 3 5.62213e+00 8.44460e-01 567 2011 4 4.81588e+00 1.75512e-01 97 2011 5 4.19508e+00 4.78624e-01 127 2011 6 6.83361e+00 2.08653e+00 270 2011 7 6.81025e+00 1.46578e+00 256 2011 8 7.62339e+00 1.89727e+00 684 2011 9 5.41305e+00 1.22805e+00 673 2011 10 4.25941e+00 1.01517e+00 616 2011 11 3.59711e+00 7.86431e-01 522 2011 12 4.72885e+00 6.91831e-01 985 2012 1 4.06008e+00 5.81506e-01 764 2012 2 3.96813e+00 7.16137e-01 479 2012 3 3.44193e+00 9.87526e-01 256 2012 4 6.39339e+00 5.54614e-01 127 2012 5 nan nan 0 2012 6 9.01109e+00 1.00865e+00 269 2012 7 8.25426e+00 6.28476e-01 128 2012 8 6.12911e+00 1.15916e+00 611 2012 9 4.41557e+00 1.11511e+00 630 2012 10 4.31410e+00 1.08507e+00 673 2012 11 4.50794e+00 7.72384e-01 598 2012 12 4.22558e+00 1.08226e+00 472 2013 1 5.34824e+00 1.06819e+00 512 2013 2 4.96363e+00 9.62104e-01 610 2013 3 4.68269e+00 6.18826e-01 537 2013 4 3.79851e+00 7.72678e-01 100 2013 5 6.10790e+00 1.11087e+00 192 2013 6 8.22671e+00 2.40185e+00 437 2013 7 8.03624e+00 1.60800e+00 359 2013 8 8.36049e+00 1.24429e+00 932 2013 9 4.09079e+00 8.47728e-01 709 2013 10 5.08566e+00 1.59488e+00 986 2013 11 4.80583e+00 9.44509e-01 538 2013 12 5.07952e+00 1.31819e+00 837 2014 1 6.23372e+00 8.24338e-01 732 2014 2 5.13537e+00 6.11148e-01 692 2014 3 5.90872e+00 9.80191e-01 606 2014 4 4.24710e+00 1.29271e+00 208 2014 5 5.85327e+00 8.58295e-01 423 2014 6 5.81962e+00 9.04884e-01 496 2014 7 5.96914e+00 1.66099e+00 605 2014 8 7.29082e+00 9.79855e-01 590 2014 9 5.42721e+00 1.11666e+00 1009 2014 10 3.79660e+00 4.94147e-01 811 2014 11 4.21399e+00 1.21181e+00 818 2014 12 5.17850e+00 9.30688e-01 1063 2015 1 5.31066e+00 1.13585e+00 755 2015 2 6.04699e+00 6.88796e-01 546 2015 3 5.54134e+00 7.64860e-01 431 2015 4 5.09009e+00 7.47542e-01 206 2015 5 4.47297e+00 9.79174e-01 82 2015 6 5.37538e+00 1.00670e+00 568 2015 7 6.36842e+00 1.55153e+00 209 2015 8 6.03273e+00 1.53235e+00 443 2015 9 4.63846e+00 1.13857e+00 416 2015 10 3.47053e+00 6.97053e-01 244 2015 11 3.89451e+00 7.08895e-01 685 2015 12 4.16005e+00 1.03299e+00 567 2016 1 4.35491e+00 5.07469e-01 756 2016 2 5.89284e+00 6.61786e-01 1207 2016 3 5.15386e+00 5.67912e-01 424 2016 4 7.41946e+00 2.23286e+00 524 2016 5 5.85802e+00 1.27024e+00 385 2016 6 6.78168e+00 1.12212e+00 499 2016 7 6.76265e+00 1.22545e+00 498 2016 8 5.81037e+00 1.29786e+00 618 2016 9 3.97193e+00 1.21653e+00 791 2016 10 4.18127e+00 5.85565e-01 1009 2016 11 4.04401e+00 9.02658e-01 635 2016 12 4.73715e+00 1.12889e+00 472 2017 1 4.21358e+00 8.71703e-01 757 2017 2 4.29785e+00 7.47772e-01 505 2017 3 5.75200e+00 6.81292e-01 313 2017 4 5.28656e+00 9.12627e-01 351 2017 5 4.98918e+00 1.29966e+00 152 2017 6 6.71395e+00 1.34319e+00 815 2017 7 5.76273e+00 1.42389e+00 332 2017 8 4.36876e+00 1.24499e+00 547 2017 9 2.64690e+00 1.05433e+00 363 2017 10 4.00911e+00 9.55831e-01 669 2017 11 3.95557e+00 6.21864e-01 685 2017 12 4.16080e+00 9.69485e-01 864 2018 1 4.85544e+00 5.69331e-01 898 2018 2 5.30649e+00 5.37743e-01 549 2018 3 5.65392e+00 7.46607e-01 708 2018 4 6.07355e+00 5.29982e-01 153 2018 5 4.82482e+00 1.11872e+00 228 2018 6 5.70863e+00 1.83554e+00 119 2018 7 5.42569e+00 8.81615e-01 425 2018 8 7.77553e+00 8.08527e-01 559 2018 9 5.33680e+00 1.42112e+00 705 2018 10 3.92829e+00 1.06179e+00 458 2018 11 3.24449e+00 6.23153e-01 321 2018 12 4.17780e+00 4.66814e-01 625 2019 1 4.00347e+00 4.41708e-01 320 2019 2 4.64995e+00 7.97753e-01 662 2019 3 5.64671e+00 6.69209e-01 735 2019 4 4.85425e+00 8.61512e-01 472 2019 5 5.16719e+00 1.07569e+00 406 2019 6 6.78217e+00 9.73509e-01 625 2019 7 6.73694e+00 1.65121e+00 512 2019 8 6.15577e+00 1.76424e+00 714 2019 9 5.78866e+00 8.90320e-01 975 2019 10 4.50402e+00 8.67332e-01 569 2019 11 3.83452e+00 7.29456e-01 652 2019 12 4.34075e+00 7.75919e-01 772 2020 1 4.75308e+00 6.23773e-01 837 2020 2 4.22451e+00 6.59463e-01 582 2020 3 4.71592e+00 8.10984e-01 661 2020 4 4.98899e+00 4.41806e-01 212 2020 5 6.14999e+00 1.08701e+00 246 2020 6 5.61258e+00 1.06720e+00 686 2020 7 7.18303e+00 1.08067e+00 641 2020 8 5.24392e+00 9.40028e-01 465 2020 9 4.23978e+00 9.77470e-01 878 2020 10 4.85689e+00 9.59581e-01 1301 2020 11 3.93989e+00 7.66935e-01 703 2020 12 3.85502e+00 5.49422e-01 671 2021 1 4.62264e+00 6.14236e-01 785 2021 2 5.17627e+00 8.16079e-01 754 2021 3 5.25975e+00 4.60154e-01 495 2021 4 5.35686e+00 1.52514e+00 90 2021 5 6.23568e+00 8.66446e-01 400 2021 6 7.66762e+00 1.57627e+00 525 2021 7 8.67792e+00 1.52634e+00 714 2021 8 6.27613e+00 1.71838e+00 666 2021 9 4.64163e+00 1.10969e+00 1076 2021 10 4.03198e+00 1.17239e+00 1110 2021 11 3.76630e+00 5.55734e-01 692 2021 12 3.82679e+00 7.57211e-01 530 2022 1 4.12850e+00 5.68840e-01 722 2022 2 5.17849e+00 5.95475e-01 691 2022 3 4.99262e+00 8.65547e-01 362 2022 4 3.32668e+00 0.00000e+00 1 2022 5 5.50339e+00 1.15119e+00 124 2022 6 6.05335e+00 8.42790e-01 510 2022 7 7.29148e+00 1.77923e+00 193 2022 8 7.58724e+00 1.03332e+00 357 2022 9 4.52776e+00 1.03800e+00 745 2022 10 4.81465e+00 5.85860e-01 874 2022 11 3.36403e+00 6.53558e-01 518 2022 12 4.27342e+00 9.79773e-01 595 2023 1 4.33888e+00 5.34381e-01 754 2023 2 4.55005e+00 8.20770e-01 494 2023 3 6.11808e+00 5.88766e-01 769 2023 4 6.79952e+00 7.20217e-01 733 2023 5 5.17640e+00 1.22210e+00 396 2023 6 6.94734e+00 1.10259e+00 713 2023 7 6.99499e+00 9.86389e-01 863 2023 8 6.63803e+00 1.03088e+00 576 2023 9 5.75739e+00 1.02998e+00 624 2023 10 4.08065e+00 6.75150e-01 772 2023 11 3.67409e+00 9.02637e-01 695 2023 12 4.04333e+00 9.97286e-01 766 2024 1 3.93188e+00 7.93216e-01 1028 2024 2 5.51012e+00 6.29840e-01 1016 2024 3 5.50932e+00 7.43186e-01 741 2024 4 6.66224e+00 2.10822e-01 128