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 1.18753e+01 9.03545e+00 664 2002 8 2.09962e+00 1.80458e+00 694 2002 9 5.15640e+00 4.35956e+00 1022 2002 10 1.88252e+00 1.90910e+00 703 2002 11 1.13383e+00 7.90248e-01 851 2002 12 3.63344e+00 2.10548e+00 371 2003 1 4.17892e+00 2.19946e+00 1127 2003 2 2.26393e+00 1.30352e+00 357 2003 3 1.96348e+00 9.12369e-01 437 2003 4 4.75322e+00 3.24993e+00 273 2003 5 6.89516e+00 4.35749e+00 136 2003 6 1.19844e+01 7.39789e+00 503 2003 7 5.95773e+00 4.37183e+00 414 2003 8 1.85962e+00 1.63725e+00 701 2003 9 3.16259e+00 3.12334e+00 842 2003 10 2.83470e+00 3.32552e+00 963 2003 11 1.72546e+00 1.59298e+00 768 2003 12 2.00564e+00 2.78612e+00 538 2004 1 2.73062e+00 1.91729e+00 492 2004 2 1.11707e+00 7.70197e-01 577 2004 3 3.24869e+00 2.15210e+00 732 2004 4 5.23390e+00 4.28113e+00 265 2004 5 7.01550e+00 3.33609e+00 255 2004 6 1.06672e+01 3.95737e+00 575 2004 7 7.45660e+00 5.38904e+00 681 2004 8 2.12154e+00 2.31613e+00 774 2004 9 2.34113e+00 2.12340e+00 780 2004 10 2.23907e+00 1.60918e+00 625 2004 11 8.98186e-01 6.40678e-01 295 2004 12 1.47952e+00 1.14437e+00 517 2005 1 2.24336e+00 1.25222e+00 803 2005 2 1.48596e+00 9.88825e-01 548 2005 3 1.58868e+00 1.20825e+00 646 2005 4 5.09078e+00 4.82800e+00 394 2005 5 7.33619e+00 3.41513e+00 269 2005 6 4.56657e+00 4.62539e+00 400 2005 7 7.11992e+00 6.87098e+00 203 2005 8 2.70331e+00 2.78352e+00 726 2005 9 9.63039e-01 8.50358e-01 813 2005 10 2.45952e+00 2.86206e+00 1108 2005 11 1.57878e+00 1.54020e+00 381 2005 12 1.85351e+00 1.72148e+00 781 2006 1 8.27124e-01 4.29769e-01 448 2006 2 2.73516e+00 1.95557e+00 420 2006 3 3.51024e+00 2.64878e+00 832 2006 4 5.43819e+00 3.39960e+00 393 2006 5 8.14584e+00 2.78277e+00 65 2006 6 8.38779e+00 4.64814e+00 525 2006 7 5.53616e+00 3.98303e+00 292 2006 8 3.47006e+00 4.23824e+00 196 2006 9 2.40365e+00 2.15484e+00 949 2006 10 3.40608e+00 2.36522e+00 885 2006 11 9.44005e-01 1.11775e+00 734 2006 12 1.34341e+00 8.41726e-01 802 2007 1 2.46172e+00 1.43137e+00 873 2007 2 2.92252e+00 2.10414e+00 813 2007 3 3.16021e+00 1.62650e+00 611 2007 4 2.16752e+00 1.41425e+00 192 2007 5 6.41311e+00 2.17311e+00 78 2007 6 7.57151e+00 2.99350e+00 492 2007 7 2.19668e+00 2.50368e+00 262 2007 8 4.97399e+00 4.91522e+00 687 2007 9 1.47684e+00 1.78800e+00 830 2007 10 1.63791e+00 1.41157e+00 713 2007 11 5.61110e-01 4.71272e-01 899 2007 12 6.60314e-01 6.55180e-01 568 2008 1 1.98660e+00 1.32848e+00 443 2008 2 1.34218e+00 8.64390e-01 508 2008 3 4.53738e+00 2.44055e+00 410 2008 4 3.76440e+00 3.38738e+00 119 2008 5 1.21039e+01 4.36925e+00 66 2008 6 6.57261e+00 8.75833e+00 163 2008 7 6.18956e+00 5.50823e+00 283 2008 8 1.12157e+00 1.52268e+00 106 2008 9 1.14937e+00 1.38611e+00 226 2008 10 7.60532e-01 9.21898e-01 512 2008 11 9.23606e-01 5.94463e-01 404 2008 12 3.45045e+00 3.21699e+00 950 2009 1 2.73423e+00 1.49781e+00 733 2009 2 3.88624e+00 3.22388e+00 320 2009 3 1.54276e+00 1.23676e+00 428 2009 4 2.78238e+00 1.07537e+00 58 2009 5 7.81152e+00 5.62063e+00 187 2009 6 4.87690e+00 4.44672e+00 350 2009 7 9.56734e+00 2.67458e+00 109 2009 8 5.65553e+00 5.04050e+00 374 2009 9 2.04394e+00 1.62389e+00 433 2009 10 1.10101e+00 1.08154e+00 429 2009 11 6.56633e-01 5.69422e-01 465 2009 12 1.64070e+00 1.14555e+00 695 2010 1 2.25397e+00 1.68714e+00 704 2010 2 3.42960e+00 1.98315e+00 508 2010 3 6.63196e+00 3.54154e+00 493 2010 4 3.69638e+00 1.71584e+00 176 2010 5 2.99382e+00 1.65192e+00 199 2010 6 4.67841e-01 2.92509e-01 70 2010 7 9.90998e+00 3.99293e+00 410 2010 8 4.88179e+00 3.56698e+00 128 2010 9 1.32196e+00 1.52483e+00 525 2010 10 1.74159e+00 1.92038e+00 685 2010 11 1.93935e+00 1.65997e+00 1018 2010 12 1.02360e+00 7.57171e-01 736 2011 1 2.20465e+00 1.41575e+00 651 2011 2 1.91380e+00 1.24725e+00 438 2011 3 4.95440e+00 2.61630e+00 567 2011 4 2.48424e+00 3.88272e-01 97 2011 5 1.38467e+00 8.71545e-01 127 2011 6 1.01184e+01 6.76220e+00 270 2011 7 9.35985e+00 5.17046e+00 256 2011 8 1.25769e+01 7.03535e+00 684 2011 9 4.68020e+00 3.61050e+00 673 2011 10 1.91804e+00 2.04350e+00 616 2011 11 8.29853e-01 1.13804e+00 522 2011 12 2.52513e+00 1.66019e+00 985 2012 1 1.23838e+00 9.01984e-01 764 2012 2 1.20612e+00 1.04125e+00 479 2012 3 8.35316e-01 1.14036e+00 256 2012 4 7.36566e+00 1.96778e+00 127 2012 5 nan nan 0 2012 6 1.78060e+01 4.15854e+00 269 2012 7 1.46999e+01 2.55789e+00 128 2012 8 6.76687e+00 3.92731e+00 611 2012 9 2.26870e+00 2.27450e+00 630 2012 10 2.08330e+00 2.37115e+00 673 2012 11 2.13450e+00 1.70667e+00 598 2012 12 1.91571e+00 1.70688e+00 472 2013 1 4.40045e+00 2.68614e+00 512 2013 2 3.28731e+00 2.30641e+00 610 2013 3 2.38272e+00 1.32375e+00 537 2013 4 1.04221e+00 1.03273e+00 100 2013 5 6.66548e+00 3.73379e+00 192 2013 6 1.49001e+01 9.26727e+00 437 2013 7 1.39071e+01 6.41652e+00 359 2013 8 1.52025e+01 4.98138e+00 932 2013 9 1.48850e+00 1.36829e+00 709 2013 10 4.23895e+00 4.37077e+00 986 2013 11 2.91042e+00 2.28299e+00 538 2013 12 3.92107e+00 3.59092e+00 837 2014 1 6.90691e+00 2.90019e+00 732 2014 2 3.43807e+00 1.72511e+00 692 2014 3 5.93271e+00 3.18982e+00 606 2014 4 2.23471e+00 2.21964e+00 208 2014 5 5.65651e+00 2.88240e+00 423 2014 6 5.57647e+00 3.04595e+00 496 2014 7 6.72826e+00 5.08711e+00 605 2014 8 1.09020e+01 3.66730e+00 590 2014 9 4.61906e+00 3.19713e+00 1009 2014 10 8.43266e-01 5.59898e-01 811 2014 11 2.06906e+00 2.33729e+00 818 2014 12 3.80131e+00 2.28628e+00 1063 2015 1 4.34956e+00 2.98186e+00 755 2015 2 6.21467e+00 2.32274e+00 546 2015 3 4.65588e+00 2.39357e+00 431 2015 4 3.43241e+00 1.77235e+00 206 2015 5 2.25554e+00 1.76834e+00 82 2015 6 4.38533e+00 2.82750e+00 568 2015 7 7.78761e+00 5.65740e+00 209 2015 8 6.82834e+00 4.77379e+00 443 2015 9 2.75346e+00 2.44281e+00 416 2015 10 6.41430e-01 7.03359e-01 244 2015 11 1.09912e+00 1.00435e+00 685 2015 12 1.75966e+00 2.44663e+00 567 2016 1 1.66897e+00 9.40533e-01 756 2016 2 5.70032e+00 2.10791e+00 1207 2016 3 3.46212e+00 1.62753e+00 424 2016 4 1.18562e+01 8.51444e+00 524 2016 5 6.04534e+00 3.72524e+00 385 2016 6 9.06013e+00 3.82791e+00 499 2016 7 8.96085e+00 4.57594e+00 498 2016 8 5.87423e+00 4.13710e+00 618 2016 9 1.67646e+00 2.38241e+00 791 2016 10 1.42533e+00 9.87825e-01 1009 2016 11 1.46436e+00 1.47780e+00 635 2016 12 2.93480e+00 2.87793e+00 472 2017 1 1.67742e+00 1.18215e+00 757 2017 2 1.72804e+00 9.94495e-01 505 2017 3 5.25984e+00 2.12297e+00 313 2017 4 4.08386e+00 2.30011e+00 351 2017 5 3.70959e+00 3.29504e+00 152 2017 6 8.87847e+00 4.90547e+00 815 2017 7 5.82641e+00 4.63348e+00 332 2017 8 2.30149e+00 1.96084e+00 547 2017 9 3.96351e-01 8.90186e-01 363 2017 10 1.44373e+00 1.45998e+00 669 2017 11 1.11189e+00 7.27585e-01 685 2017 12 1.70261e+00 1.62090e+00 864 2018 1 2.73507e+00 1.28642e+00 898 2018 2 3.85985e+00 1.58563e+00 549 2018 3 4.98884e+00 2.32611e+00 708 2018 4 6.23884e+00 1.79734e+00 153 2018 5 3.14399e+00 2.56276e+00 228 2018 6 6.28002e+00 5.39288e+00 119 2018 7 4.40250e+00 2.67556e+00 425 2018 8 1.27598e+01 3.23212e+00 559 2018 9 4.64071e+00 4.32599e+00 705 2018 10 1.44273e+00 1.49157e+00 458 2018 11 4.08770e-01 3.95895e-01 321 2018 12 1.35043e+00 7.42437e-01 625 2019 1 1.07792e+00 5.45901e-01 320 2019 2 2.44538e+00 1.68715e+00 662 2019 3 4.93110e+00 1.99723e+00 735 2019 4 2.93515e+00 2.21422e+00 472 2019 5 3.93488e+00 2.28279e+00 406 2019 6 8.98176e+00 3.32861e+00 625 2019 7 9.07402e+00 6.19977e+00 512 2019 8 7.25991e+00 6.21123e+00 714 2019 9 5.48910e+00 2.86918e+00 975 2019 10 2.21617e+00 1.51076e+00 569 2019 11 1.04332e+00 1.10715e+00 652 2019 12 1.83448e+00 1.49272e+00 772 2020 1 2.53572e+00 1.40799e+00 837 2020 2 1.54481e+00 1.06671e+00 582 2020 3 2.59336e+00 1.73012e+00 661 2020 4 2.98537e+00 1.11578e+00 212 2020 5 6.79409e+00 3.65411e+00 246 2020 6 5.06097e+00 3.46115e+00 686 2020 7 1.04947e+01 4.12319e+00 641 2020 8 3.95303e+00 2.72772e+00 465 2020 9 1.82766e+00 2.29418e+00 878 2020 10 3.04082e+00 2.23667e+00 1301 2020 11 1.20593e+00 1.09371e+00 703 2020 12 9.44269e-01 6.56776e-01 671 2021 1 2.24844e+00 1.36805e+00 785 2021 2 3.70619e+00 1.98081e+00 754 2021 3 3.70082e+00 1.24977e+00 495 2021 4 4.69006e+00 5.15941e+00 90 2021 5 6.94559e+00 2.97187e+00 400 2021 6 1.24729e+01 6.17994e+00 525 2021 7 1.65654e+01 5.97204e+00 714 2021 8 7.78518e+00 5.45079e+00 666 2021 9 2.70444e+00 2.79473e+00 1076 2021 10 1.74524e+00 2.28273e+00 1110 2021 11 8.42964e-01 6.52785e-01 692 2021 12 1.05368e+00 9.45650e-01 530 2022 1 1.33373e+00 1.02452e+00 722 2022 2 3.53674e+00 1.76370e+00 691 2022 3 3.30047e+00 1.63000e+00 362 2022 4 2.98905e-01 0.00000e+00 1 2022 5 4.78421e+00 3.80700e+00 124 2022 6 6.31691e+00 2.82754e+00 510 2022 7 1.12615e+01 6.65174e+00 193 2022 8 1.20332e+01 4.13400e+00 357 2022 9 2.41614e+00 2.28023e+00 745 2022 10 2.65082e+00 1.33346e+00 874 2022 11 5.24630e-01 6.30760e-01 518 2022 12 1.90287e+00 2.08670e+00 595 2023 1 1.65794e+00 9.60900e-01 754 2023 2 2.26530e+00 1.74921e+00 494 2023 3 6.40851e+00 2.04644e+00 769 2023 4 8.91767e+00 2.64185e+00 733 2023 5 4.05577e+00 3.43255e+00 396 2023 6 9.62043e+00 4.09531e+00 713 2023 7 9.72176e+00 3.80548e+00 863 2023 8 8.43988e+00 3.77165e+00 576 2023 9 5.47173e+00 3.42823e+00 624 2023 10 1.32778e+00 8.93057e-01 772 2023 11 1.00376e+00 1.18604e+00 695 2023 12 1.56980e+00 1.77887e+00 766 2024 1 1.21058e+00 1.02165e+00 1028 2024 2 4.48801e+00 1.95387e+00 1016 2024 3 4.55033e+00 2.29649e+00 741 2024 4 8.28382e+00 7.93839e-01 128