YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.02287e+01 2.86393e-01 24 2000 3 2.03265e+01 7.62660e-01 156 2000 4 2.08452e+01 1.76046e+00 155 2000 5 2.49921e+01 1.90495e+00 176 2000 6 2.78989e+01 6.09566e-01 129 2000 7 2.97870e+01 1.09643e+00 144 2000 8 2.93975e+01 7.04710e-01 80 2000 9 2.84306e+01 1.17292e+00 140 2000 10 2.56918e+01 1.09214e+00 231 2000 11 2.48126e+01 1.16004e+00 131 2000 12 2.12841e+01 8.05295e-01 86 2001 1 1.87987e+01 6.32693e-01 96 2001 2 1.84939e+01 1.66551e+00 77 2001 3 1.90717e+01 1.07481e+00 118 2001 4 2.07545e+01 1.45027e+00 124 2001 5 2.35047e+01 1.62834e+00 238 2001 6 2.62389e+01 4.61859e-01 48 2001 7 2.81138e+01 1.02910e+00 80 2001 8 2.77525e+01 1.23172e+00 116 2001 9 2.87636e+01 8.28039e-01 163 2001 10 2.55429e+01 1.13884e+00 224 2001 11 2.32560e+01 7.39888e-01 234 2001 12 2.30311e+01 7.62614e-01 146 2002 1 1.99579e+01 1.75031e+00 84 2002 2 1.82429e+01 2.25610e+00 48 2002 3 1.90153e+01 1.19417e+00 72 2002 4 2.20689e+01 1.84097e+00 138 2002 5 2.52610e+01 1.36297e+00 205 2002 6 2.66797e+01 8.67459e-01 208 2002 7 2.90599e+01 1.14748e+00 636 2002 8 2.91857e+01 8.54070e-01 577 2002 9 2.84459e+01 1.21053e+00 408 2002 10 2.76695e+01 1.25143e+00 564 2002 11 2.41897e+01 1.40608e+00 471 2002 12 2.07486e+01 1.24087e+00 484 2003 1 1.77589e+01 1.41379e+00 651 2003 2 1.74392e+01 1.02754e+00 295 2003 3 1.88187e+01 1.15114e+00 332 2003 4 2.06515e+01 1.52757e+00 568 2003 5 2.49889e+01 1.48450e+00 593 2003 6 2.75052e+01 1.26734e+00 435 2003 7 2.85451e+01 1.28839e+00 507 2003 8 2.85785e+01 1.41215e+00 664 2003 9 2.86162e+01 9.91137e-01 553 2003 10 2.59246e+01 9.09188e-01 682 2003 11 2.48480e+01 7.65232e-01 811 2003 12 2.10400e+01 1.90204e+00 524 2004 1 1.91270e+01 1.45077e+00 444 2004 2 1.73465e+01 1.31234e+00 204 2004 3 1.89709e+01 9.07449e-01 727 2004 4 1.99003e+01 1.44726e+00 538 2004 5 2.43731e+01 2.10596e+00 832 2004 6 2.79027e+01 1.92932e+00 509 2004 7 2.96306e+01 1.18533e+00 708 2004 8 2.95607e+01 1.42458e+00 536 2004 9 2.78173e+01 1.48726e+00 632 2004 10 2.54037e+01 1.27473e+00 690 2004 11 2.40164e+01 1.30747e+00 556 2004 12 2.14580e+01 1.29420e+00 591 2005 1 1.93081e+01 1.53690e+00 524 2005 2 1.87930e+01 9.64414e-01 370 2005 3 1.82317e+01 9.61342e-01 454 2005 4 2.03303e+01 1.39225e+00 564 2005 5 2.36089e+01 1.88543e+00 747 2005 6 2.70532e+01 1.30901e+00 769 2005 7 2.87092e+01 1.67394e+00 654 2005 8 2.88521e+01 1.69179e+00 642 2005 9 2.86305e+01 8.67763e-01 864 2005 10 2.71067e+01 9.80578e-01 890 2005 11 2.35569e+01 1.30529e+00 650 2005 12 2.07192e+01 1.24460e+00 490 2006 1 1.90126e+01 8.34513e-01 493 2006 2 1.85112e+01 9.25549e-01 391 2006 3 1.94991e+01 1.13001e+00 659 2006 4 2.21221e+01 1.94069e+00 599 2006 5 2.43457e+01 1.68209e+00 754 2006 6 2.82777e+01 1.60849e+00 849 2006 7 2.91429e+01 1.59296e+00 612 2006 8 2.99803e+01 1.26927e+00 730 2006 9 2.92385e+01 1.11101e+00 692 2006 10 2.72296e+01 1.23396e+00 701 2006 11 2.31130e+01 1.56581e+00 755 2006 12 2.01118e+01 1.10820e+00 433 2007 1 1.86163e+01 1.41476e+00 227 2007 2 1.84487e+01 8.28956e-01 438 2007 3 1.82846e+01 8.53924e-01 634 2007 4 2.08140e+01 1.43119e+00 544 2007 5 2.35919e+01 1.13282e+00 815 2007 6 2.68931e+01 1.94415e+00 652 2007 7 2.87145e+01 1.20434e+00 519 2007 8 2.94753e+01 1.45424e+00 705 2007 9 2.88171e+01 7.25401e-01 683 2007 10 2.72370e+01 1.14004e+00 650 2007 11 2.38116e+01 1.29790e+00 859 2007 12 2.13879e+01 1.06672e+00 571 2008 1 1.97863e+01 9.36305e-01 434 2008 2 1.89831e+01 1.07236e+00 508 2008 3 1.85087e+01 9.53838e-01 498 2008 4 2.07714e+01 1.02618e+00 578 2008 5 2.38918e+01 2.22745e+00 682 2008 6 2.91271e+01 1.15978e+00 652 2008 7 2.91317e+01 1.64728e+00 587 2008 8 2.81032e+01 1.02744e+00 524 2008 9 2.78254e+01 9.99237e-01 639 2008 10 2.61340e+01 1.11973e+00 799 2008 11 2.37946e+01 1.15270e+00 849 2008 12 2.04969e+01 1.09444e+00 484 2009 1 1.92728e+01 1.08385e+00 516 2009 2 1.86851e+01 1.16484e+00 547 2009 3 2.01045e+01 1.19662e+00 577 2009 4 2.06335e+01 1.01728e+00 609 2009 5 2.47172e+01 1.47940e+00 708 2009 6 2.77499e+01 1.71937e+00 918 2009 7 2.81724e+01 1.48030e+00 562 2009 8 2.88207e+01 1.18276e+00 591 2009 9 2.82266e+01 9.42408e-01 662 2009 10 2.69532e+01 1.26508e+00 567 2009 11 2.35033e+01 1.08528e+00 473 2009 12 1.99658e+01 7.81521e-01 204 2010 1 1.90115e+01 9.09154e-01 421 2010 2 1.60726e+01 1.08794e+00 422 2010 3 1.66384e+01 9.27955e-01 488 2010 4 1.99441e+01 1.14819e+00 563 2010 5 2.54314e+01 2.24197e+00 684 2010 6 3.01320e+01 1.84421e+00 772 2010 7 2.92118e+01 1.17687e+00 808 2010 8 2.93206e+01 1.47724e+00 558 2010 9 2.90810e+01 9.53876e-01 700 2010 10 2.60061e+01 1.23391e+00 1009 2010 11 2.32720e+01 1.33778e+00 779 2010 12 2.00888e+01 1.96654e+00 714 2011 1 1.75957e+01 1.01543e+00 500 2011 2 1.69843e+01 1.01839e+00 362 2011 3 1.89164e+01 1.41845e+00 542 2011 4 2.15973e+01 1.51121e+00 696 2011 5 2.46020e+01 1.49737e+00 990 2011 6 2.89416e+01 1.33001e+00 758 2011 7 2.98418e+01 1.33400e+00 501 2011 8 3.06554e+01 1.39912e+00 784 2011 9 2.83875e+01 6.78021e-01 768 2011 10 2.61383e+01 1.38414e+00 902 2011 11 2.31382e+01 1.00412e+00 568 2011 12 2.11819e+01 9.50697e-01 544 2012 1 1.94369e+01 1.15833e+00 593 2012 2 1.71890e+01 2.02877e+00 111 2012 3 2.08718e+01 1.83644e+00 613 2012 4 2.25381e+01 8.44552e-01 859 2012 5 2.54033e+01 1.57405e+00 945 2012 6 2.69614e+01 9.68627e-01 595 2012 7 2.83682e+01 1.34667e+00 565 2012 8 2.94753e+01 8.86380e-01 392 2012 9 2.76136e+01 9.71091e-01 640 2012 10 2.63636e+01 8.00118e-01 894 2012 11 2.25300e+01 9.40394e-01 653 2012 12 2.18938e+01 1.19710e+00 441 2013 1 1.94802e+01 8.09542e-01 376 2013 2 1.95012e+01 9.58510e-01 394 2013 3 1.85175e+01 9.83739e-01 522 2013 4 2.06142e+01 1.27371e+00 477 2013 5 2.31801e+01 1.97072e+00 776 2013 6 2.74523e+01 1.71653e+00 624 2013 7 2.78694e+01 1.07222e+00 367 2013 8 2.89291e+01 1.65623e+00 590 2013 9 2.93356e+01 9.44830e-01 697 2013 10 2.69294e+01 1.22565e+00 619 2013 11 2.37616e+01 1.60038e+00 532 2013 12 2.17413e+01 1.43316e+00 438 2014 1 1.91869e+01 1.65216e+00 403 2014 2 1.76204e+01 1.12406e+00 449 2014 3 1.79296e+01 1.10225e+00 417 2014 4 1.96508e+01 1.39006e+00 524 2014 5 2.35221e+01 1.46836e+00 629 2014 6 2.82168e+01 1.63847e+00 766 2014 7 2.85307e+01 1.29639e+00 659 2014 8 2.96359e+01 1.08624e+00 748 2014 9 2.97088e+01 1.01582e+00 596 2014 10 2.69794e+01 1.11322e+00 930 2014 11 2.25156e+01 1.56186e+00 664 2014 12 2.17655e+01 1.17240e+00 443 2015 1 2.00507e+01 1.53441e+00 411 2015 2 1.90072e+01 1.11679e+00 455 2015 3 2.00161e+01 1.10174e+00 352 2015 4 2.18073e+01 1.58330e+00 316 2015 5 2.51099e+01 1.72913e+00 782 2015 6 2.86931e+01 1.19281e+00 799 2015 7 2.91337e+01 1.40763e+00 720 2015 8 2.95341e+01 1.43232e+00 728 2015 9 2.87631e+01 1.04826e+00 569 2015 10 2.61953e+01 1.05642e+00 613 2015 11 2.49226e+01 1.29138e+00 630 2015 12 2.24454e+01 1.31166e+00 387 2016 1 2.09052e+01 1.15954e+00 426 2016 2 1.83071e+01 1.07804e+00 651 2016 3 1.88405e+01 9.72524e-01 416 2016 4 2.07287e+01 1.49036e+00 550 2016 5 2.46590e+01 1.73036e+00 592 2016 6 2.85584e+01 1.25847e+00 625 2016 7 3.05724e+01 1.01402e+00 746 2016 8 2.94545e+01 1.26591e+00 521 2016 9 2.92682e+01 1.01117e+00 717 2016 10 2.73400e+01 1.18875e+00 817 2016 11 2.48696e+01 1.50975e+00 729 2016 12 2.22192e+01 1.17081e+00 503 2017 1 2.13114e+01 9.17584e-01 514 2017 2 1.98592e+01 1.05351e+00 490 2017 3 2.02163e+01 1.27277e+00 602 2017 4 2.19916e+01 1.19165e+00 749 2017 5 2.44358e+01 1.29907e+00 626 2017 6 2.68602e+01 1.20637e+00 343 2017 7 2.93155e+01 1.36675e+00 728 2017 8 2.99928e+01 1.10273e+00 554 2017 9 2.81675e+01 1.18147e+00 616 2017 10 2.67690e+01 8.97355e-01 831 2017 11 2.45399e+01 9.63659e-01 755 2017 12 2.18935e+01 1.32935e+00 351 2018 1 2.00209e+01 1.02707e+00 471 2018 2 2.08500e+01 1.16144e+00 438 2018 3 2.06876e+01 1.56743e+00 655 2018 4 2.12414e+01 9.43573e-01 685 2018 5 2.52536e+01 2.06030e+00 738 2018 6 2.88358e+01 1.52704e+00 677 2018 7 2.93562e+01 1.13995e+00 594 2018 8 2.90949e+01 1.20319e+00 741 2018 9 2.93579e+01 8.73079e-01 717 2018 10 2.77666e+01 1.61206e+00 844 2018 11 2.33519e+01 1.49354e+00 292 2018 12 2.08214e+01 2.34613e+00 270 2019 1 1.87251e+01 1.67231e+00 436 2019 2 2.01456e+01 1.31468e+00 190 2019 3 1.92044e+01 1.13030e+00 586 2019 4 2.04686e+01 1.32168e+00 468 2019 5 2.59854e+01 1.81205e+00 853 2019 6 2.86749e+01 1.11103e+00 593 2019 7 2.97411e+01 1.10280e+00 601 2019 8 2.98598e+01 9.92251e-01 502 2019 9 2.95185e+01 1.06983e+00 877 2019 10 2.82939e+01 9.72936e-01 544 2019 11 2.46536e+01 1.31843e+00 543 2019 12 2.19619e+01 1.48369e+00 398 2020 1 2.08700e+01 1.21042e+00 461 2020 2 1.97266e+01 1.00751e+00 469 2020 3 2.19507e+01 1.89578e+00 534 2020 4 2.25009e+01 6.74680e-01 464 2020 5 2.42672e+01 1.39184e+00 689 2020 6 2.75726e+01 9.94724e-01 572 2020 7 2.91790e+01 9.71931e-01 562 2020 8 2.99639e+01 1.06798e+00 432 2020 9 2.89501e+01 1.63950e+00 499 2020 10 2.57136e+01 1.08566e+00 694 2020 11 2.48918e+01 1.15826e+00 799 2020 12 2.18997e+01 1.35378e+00 685 2021 1 1.96569e+01 9.31942e-01 436 2021 2 1.92405e+01 1.03641e+00 416 2021 3 1.97296e+01 1.17193e+00 496 2021 4 2.13405e+01 6.51156e-01 625 2021 5 2.37220e+01 1.19354e+00 716 2021 6 2.67260e+01 1.37948e+00 410 2021 7 2.93213e+01 8.61785e-01 541 2021 8 3.01326e+01 1.11701e+00 537 2021 9 2.82459e+01 9.09730e-01 587 2021 10 2.70624e+01 9.59442e-01 447 2021 11 2.34826e+01 1.10038e+00 783 2021 12 2.16921e+01 1.38698e+00 643 2022 1 2.05339e+01 1.17791e+00 544 2022 2 1.93289e+01 1.04126e+00 609 2022 3 1.96248e+01 6.13699e-01 690 2022 4 2.16751e+01 8.46913e-01 422 2022 5 2.55346e+01 7.35036e-01 713 2022 6 2.87712e+01 1.73974e+00 768 2022 7 2.97778e+01 1.02213e+00 609 2022 8 3.01941e+01 1.09375e+00 526 2022 9 2.95593e+01 9.14949e-01 720 2022 10 2.65600e+01 1.17218e+00 693 2022 11 2.39323e+01 1.30280e+00 430 2022 12 2.28937e+01 1.10716e+00 702 2023 1 2.16389e+01 1.17168e+00 580 2023 2 2.06420e+01 1.04300e+00 442 2023 3 2.11669e+01 9.52476e-01 635 2023 4 2.16823e+01 8.89309e-01 562 2023 5 2.40465e+01 1.80932e+00 607 2023 6 2.70938e+01 1.91214e+00 618 2023 7 3.01758e+01 1.20866e+00 652 2023 8 3.10937e+01 8.26086e-01 951 2023 9 3.05193e+01 8.72113e-01 761 2023 10 2.65439e+01 1.64948e+00 789 2023 11 2.40084e+01 1.12271e+00 547 2023 12 2.13037e+01 9.37979e-01 352 2024 1 2.01427e+01 9.92631e-01 309 2024 2 1.83091e+01 1.06210e+00 410 2024 3 1.96709e+01 9.92798e-01 422 2024 4 2.14502e+01 3.44349e-01 48