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 2.23045e+00 6.24206e-01 150 2002 8 2.38238e+00 7.34750e-01 448 2002 9 2.53342e+00 1.08360e+00 384 2002 10 2.53617e+00 1.08018e+00 705 2002 11 3.03939e+00 1.77889e+00 839 2002 12 2.82168e+00 1.79537e+00 602 2003 1 3.06561e+00 1.04311e+00 768 2003 2 3.37110e+00 1.46027e+00 484 2003 3 1.72083e+01 6.19070e+00 58 2003 4 nan nan 0 2003 5 6.37703e+00 6.62911e+00 256 2003 6 1.09093e+01 6.56688e+00 311 2003 7 1.24929e+01 9.45937e+00 62 2003 8 1.41596e+01 9.42709e+00 281 2003 9 3.97128e+00 3.04430e+00 368 2003 10 4.84352e+00 2.16891e+00 861 2003 11 5.65057e+00 3.69172e+00 848 2003 12 2.70022e+00 1.35028e+00 865 2004 1 3.78863e+00 2.52052e+00 832 2004 2 2.55513e+00 8.64805e-01 406 2004 3 7.23759e+00 5.95992e+00 698 2004 4 1.97347e+00 7.91019e-01 408 2004 5 1.89956e+00 7.30620e-01 636 2004 6 2.67087e+00 1.26522e+00 495 2004 7 4.28871e+00 1.66434e+00 384 2004 8 4.23545e+00 3.93605e+00 370 2004 9 1.07232e+01 1.07672e+01 221 2004 10 2.52053e+01 9.61330e+00 93 2004 11 2.49751e+01 1.13633e+01 89 2004 12 1.65457e+01 1.01421e+01 472 2005 1 9.29602e+00 7.05323e+00 704 2005 2 7.68243e+00 3.37555e+00 635 2005 3 4.37761e+00 3.03275e+00 514 2005 4 1.19870e+01 8.41612e+00 274 2005 5 6.27452e+00 2.74228e+00 31 2005 6 5.42231e+00 1.53891e+00 256 2005 7 1.53892e+01 1.07420e+01 349 2005 8 1.68169e+01 9.88125e+00 145 2005 9 5.29594e+00 2.08077e+00 374 2005 10 4.53846e+00 4.89481e+00 1004 2005 11 3.94804e+00 3.37347e+00 1030 2005 12 3.67745e+00 1.84282e+00 1088 2006 1 1.10184e+01 9.46175e+00 634 2006 2 1.03729e+01 6.12424e+00 472 2006 3 8.56893e+00 5.59225e+00 987 2006 4 3.74966e+00 2.50684e+00 438 2006 5 1.66892e+00 1.03890e+00 409 2006 6 2.70958e+00 8.62443e-01 357 2006 7 3.37300e+00 2.40107e+00 322 2006 8 3.76525e+00 2.61331e+00 368 2006 9 2.73227e+00 1.17963e+00 776 2006 10 2.19916e+00 8.72934e-01 918 2006 11 2.05845e+00 1.05273e+00 896 2006 12 1.60057e+00 1.69178e+00 516 2007 1 1.51060e+00 1.05982e+00 341 2007 2 1.40713e+00 9.55118e-01 753 2007 3 1.45404e+00 7.36751e-01 1052 2007 4 1.47125e+00 9.19651e-01 576 2007 5 1.02400e+00 3.24303e-01 130 2007 6 1.57999e+00 5.79918e-01 383 2007 7 2.08667e+00 8.31546e-01 450 2007 8 3.51299e+00 1.40111e+00 563 2007 9 3.17928e+00 9.40532e-01 403 2007 10 2.90190e+00 1.27229e+00 715 2007 11 2.29189e+00 1.84102e+00 1088 2007 12 3.18334e+00 2.50280e+00 801 2008 1 2.09491e+00 1.88591e+00 576 2008 2 2.52090e+00 1.14475e+00 721 2008 3 1.09878e+01 1.11812e+01 558 2008 4 5.43229e+00 2.10151e+00 452 2008 5 6.62915e+00 3.18777e+00 448 2008 6 4.55267e+00 1.84430e+00 448 2008 7 2.96033e+00 1.25418e+00 445 2008 8 3.78186e+00 1.82310e+00 192 2008 9 7.36500e+00 5.57975e+00 530 2008 10 5.65230e+00 3.57971e+00 908 2008 11 1.89977e+00 1.34731e+00 1024 2008 12 6.71963e+00 5.42734e+00 886 2009 1 3.71419e+00 1.55243e+00 749 2009 2 2.70850e+00 1.25656e+00 996 2009 3 2.23023e+00 9.24933e-01 926 2009 4 8.88506e+00 9.47931e+00 383 2009 5 6.59116e+00 2.88803e+00 140 2009 6 2.02328e+00 6.18710e-01 251 2009 7 9.37892e+00 9.78217e+00 166 2009 8 8.23434e+00 5.51955e+00 639 2009 9 7.72508e+00 6.77458e+00 748 2009 10 3.60191e+00 2.87836e+00 955 2009 11 2.14636e+00 1.26467e+00 723 2009 12 1.75334e+00 1.08067e+00 285 2010 1 3.76229e+00 1.99180e+00 896 2010 2 5.06129e+00 1.58312e+00 831 2010 3 1.03804e+01 6.90507e+00 949 2010 4 1.09817e+01 9.13056e+00 268 2010 5 4.51697e+00 1.74156e+00 490 2010 6 4.16937e+00 1.99685e+00 576 2010 7 4.87800e+00 2.41470e+00 287 2010 8 6.10459e+00 3.14197e+00 149 2010 9 4.95697e+00 2.16125e+00 600 2010 10 2.30044e+00 1.13566e+00 1536 2010 11 2.14724e+00 1.55264e+00 1222 2010 12 1.77274e+00 1.34188e+00 959 2011 1 1.74255e+00 1.40486e+00 596 2011 2 9.49002e-01 6.52866e-01 820 2011 3 1.36709e+00 7.00361e-01 773 2011 4 1.58879e+00 8.96266e-01 832 2011 5 1.29414e+00 5.98380e-01 808 2011 6 1.23556e+00 5.85916e-01 256 2011 7 2.29458e+00 7.06170e-01 450 2011 8 2.20146e+00 1.12638e+00 384 2011 9 2.34961e+00 8.29091e-01 728 2011 10 1.93399e+00 8.65769e-01 1084 2011 11 1.70151e+00 8.71614e-01 1060 2011 12 1.26140e+00 5.38887e-01 843 2012 1 1.22345e+00 6.60512e-01 930 2012 2 1.19548e+00 4.50099e-01 192 2012 3 1.64847e+00 1.36671e+00 832 2012 4 1.64416e+00 8.49072e-01 768 2012 5 1.94554e+00 4.75855e-01 359 2012 6 2.65873e+00 7.42313e-01 150 2012 7 5.08576e+00 4.03563e+00 110 2012 8 1.74377e+01 7.53039e+00 293 2012 9 1.50959e+01 9.57121e+00 428 2012 10 1.18431e+01 7.69879e+00 418 2012 11 3.38235e+00 1.18500e+00 849 2012 12 5.69006e+00 3.54954e+00 702 2013 1 3.21032e+00 2.52263e+00 716 2013 2 2.14497e+00 5.50457e-01 441 2013 3 3.01430e+00 2.76895e+00 655 2013 4 1.73191e+01 1.13640e+01 305 2013 5 4.18992e+00 2.09782e+00 345 2013 6 1.38518e+01 1.00535e+01 363 2013 7 2.60458e+01 1.20751e+01 67 2013 8 2.33141e+01 1.07430e+01 180 2013 9 2.31806e+01 1.24250e+01 126 2013 10 6.59719e+00 4.55304e+00 816 2013 11 7.67311e+00 5.00516e+00 482 2013 12 3.48054e+00 1.69473e+00 768 2014 1 4.07893e+00 1.04197e+00 458 2014 2 8.85377e+00 1.02675e+01 688 2014 3 7.96205e+00 5.93597e+00 491 2014 4 2.61699e+01 1.27006e+01 139 2014 5 2.00415e+01 9.12130e+00 124 2014 6 7.46882e+00 4.81114e+00 129 2014 7 1.23389e+01 7.54632e+00 461 2014 8 3.45301e+00 1.66376e+00 444 2014 9 8.81157e+00 6.91835e+00 335 2014 10 9.64657e+00 9.49716e+00 995 2014 11 2.26687e+00 1.51655e+00 938 2014 12 3.41994e+00 3.55639e+00 598 2015 1 6.12786e+00 7.32279e+00 788 2015 2 7.64571e+00 8.40822e+00 760 2015 3 1.28815e+01 6.87525e+00 290 2015 4 6.66117e+00 2.61063e+00 103 2015 5 3.71489e+00 1.48265e+00 594 2015 6 2.84256e+00 8.86513e-01 317 2015 7 4.43929e+00 2.77563e+00 157 2015 8 1.11187e+01 6.37491e+00 340 2015 9 1.00135e+01 5.05637e+00 198 2015 10 3.67250e+00 3.18895e+00 824 2015 11 5.54609e+00 3.57668e+00 845 2015 12 2.92244e+00 1.59247e+00 601 2016 1 3.06455e+00 2.01144e+00 502 2016 2 6.14711e+00 4.05635e+00 1024 2016 3 6.16470e+00 3.15755e+00 768 2016 4 4.73140e+00 4.02328e+00 399 2016 5 4.21317e+00 1.80329e+00 640 2016 6 2.49555e+00 8.64725e-01 489 2016 7 3.42896e+00 1.87568e+00 768 2016 8 3.93326e+00 1.96509e+00 597 2016 9 7.50188e+00 4.53318e+00 622 2016 10 3.23823e+00 1.73295e+00 956 2016 11 2.10408e+00 1.13246e+00 940 2016 12 2.05107e+00 7.68755e-01 768 2017 1 2.26302e+00 9.27375e-01 642 2017 2 8.02786e+00 5.02561e+00 960 2017 3 3.29548e+00 2.65480e+00 934 2017 4 1.67971e+00 6.43122e-01 799 2017 5 1.53840e+00 6.27155e-01 558 2017 6 2.92783e+00 1.35686e+00 231 2017 7 5.62278e+00 2.86856e+00 141 2017 8 8.46562e+00 7.00018e+00 585 2017 9 7.93616e+00 6.05817e+00 341 2017 10 1.22888e+01 7.98041e+00 267 2017 11 5.73613e+00 5.36797e+00 1057 2017 12 3.00954e+00 1.70110e+00 578 2018 1 2.06595e+00 6.84213e-01 720 2018 2 3.86964e+00 4.75552e+00 574 2018 3 2.18032e+00 1.20582e+00 881 2018 4 2.60147e+00 1.14360e+00 640 2018 5 2.26478e+00 6.99813e-01 437 2018 6 2.76975e+00 1.10765e+00 256 2018 7 4.92108e+00 4.38179e+00 89 2018 8 1.54558e+01 1.15252e+01 203 2018 9 6.76714e+00 3.87308e+00 766 2018 10 4.78063e+00 2.08255e+00 960 2018 11 4.74965e+00 2.35071e+00 381 2018 12 8.65559e+00 7.53200e+00 477 2019 1 1.56191e+01 9.08658e+00 301 2019 2 2.57310e+01 1.23978e+01 173 2019 3 8.22917e+00 7.75709e+00 677 2019 4 6.33876e+00 6.84522e+00 382 2019 5 2.70804e+00 8.65961e-01 643 2019 6 2.42973e+00 4.75503e-01 128 2019 7 2.74438e+00 1.16532e+00 192 2019 8 1.10559e+01 1.01640e+01 462 2019 9 3.38081e+00 1.51525e+00 746 2019 10 3.75768e+00 1.03928e+00 729 2019 11 2.40017e+00 9.01888e-01 704 2019 12 3.55327e+00 2.58064e+00 578 2020 1 2.57181e+00 1.23584e+00 782 2020 2 2.30893e+00 8.78532e-01 502 2020 3 5.98580e+00 5.80528e+00 657 2020 4 4.45205e+00 2.49824e+00 411 2020 5 4.38918e+00 2.75439e+00 687 2020 6 4.44128e+00 1.94869e+00 384 2020 7 4.71750e+00 4.72763e+00 222 2020 8 7.37943e+00 5.42921e+00 256 2020 9 5.01789e+00 2.54721e+00 252 2020 10 5.96341e+00 3.15298e+00 629 2020 11 4.69822e+00 1.89242e+00 894 2020 12 3.04756e+00 1.34136e+00 817 2021 1 3.89881e+00 2.48124e+00 370 2021 2 6.60231e+00 3.39982e+00 665 2021 3 1.05868e+01 7.94400e+00 218 2021 4 1.09209e+01 7.53903e+00 489 2021 5 4.66059e+00 2.32972e+00 586 2021 6 2.33709e+00 9.80550e-01 193 2021 7 6.09185e+00 5.04311e+00 171 2021 8 1.29876e+01 1.49653e+01 111 2021 9 1.57484e+01 1.51227e+01 120 2021 10 1.06109e+01 7.21541e+00 424 2021 11 3.58990e+00 1.49322e+00 988 2021 12 4.38993e+00 2.10021e+00 745 2022 1 4.39756e+00 2.85920e+00 801 2022 2 3.69963e+00 2.22569e+00 1014 2022 3 3.27966e+00 1.20768e+00 826 2022 4 nan nan 0 2022 5 5.78856e+00 4.37926e+00 333 2022 6 4.78052e+00 2.68669e+00 415 2022 7 3.88925e+00 3.82623e+00 402 2022 8 7.32880e+00 4.60084e+00 468 2022 9 6.30273e+00 6.20678e+00 166 2022 10 2.10891e+00 2.20075e+00 1149 2022 11 3.68663e+00 2.34504e+00 540 2022 12 2.93453e+00 1.72879e+00 706 2023 1 1.84456e+00 8.05292e-01 895 2023 2 2.66852e+00 1.07414e+00 593 2023 3 6.15597e+00 4.53310e+00 756 2023 4 6.13345e+00 3.54288e+00 384 2023 5 4.58478e+00 3.05505e+00 290 2023 6 2.88068e+00 9.70127e-01 320 2023 7 9.25504e+00 1.06875e+01 533 2023 8 5.68695e+00 3.92581e+00 294 2023 9 1.10644e+01 8.83419e+00 559 2023 10 7.97200e+00 9.38656e+00 612 2023 11 2.39931e+00 9.35995e-01 765 2023 12 4.75950e+00 2.75146e+00 311 2024 1 1.74610e+01 9.69015e+00 284 2024 2 1.41767e+01 1.01351e+01 631 2024 3 9.02023e+00 5.34077e+00 511 2024 4 nan nan 0