YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.70508e+01 3.60783e-01 32 2000 3 1.98624e+01 1.38100e+00 150 2000 4 2.19242e+01 9.76243e-01 160 2000 5 2.53023e+01 2.08426e+00 176 2000 6 2.72619e+01 7.57797e-01 78 2000 7 2.99582e+01 7.83984e-01 128 2000 8 2.98427e+01 1.50368e-01 48 2000 9 2.63153e+01 1.44313e+00 120 2000 10 2.33188e+01 9.42404e-01 258 2000 11 2.15427e+01 2.09589e+00 144 2000 12 1.51518e+01 1.68375e+00 98 2001 1 1.37437e+01 1.82432e-02 16 2001 2 1.63219e+01 1.25625e+00 70 2001 3 1.67939e+01 1.38638e+00 115 2001 4 1.99279e+01 1.72780e+00 184 2001 5 2.44270e+01 1.05795e+00 212 2001 6 2.57297e+01 9.55077e-01 60 2001 7 2.92854e+01 6.53762e-01 48 2001 8 2.91652e+01 7.41325e-01 128 2001 9 2.68451e+01 1.41047e+00 128 2001 10 2.30972e+01 1.70840e+00 128 2001 11 2.00419e+01 5.27471e-01 227 2001 12 1.91789e+01 1.83293e+00 139 2002 1 1.31687e+01 1.48487e-01 16 2002 2 1.49517e+01 1.38232e+00 112 2002 3 1.54206e+01 2.10375e+00 40 2002 4 2.31158e+01 1.98728e+00 160 2002 5 2.62490e+01 1.75882e+00 174 2002 6 2.81199e+01 6.35871e-01 112 2002 7 2.90683e+01 1.58789e+00 406 2002 8 2.90897e+01 1.14460e+00 518 2002 9 2.85630e+01 1.06113e+00 418 2002 10 2.72871e+01 1.51499e+00 556 2002 11 2.15245e+01 2.37703e+00 514 2002 12 1.58337e+01 9.40642e-01 328 2003 1 1.37503e+01 1.31845e+00 593 2003 2 1.42300e+01 1.29970e+00 247 2003 3 1.94117e+01 1.27908e+00 307 2003 4 2.10123e+01 1.89964e+00 623 2003 5 2.58594e+01 1.39861e+00 576 2003 6 2.77809e+01 1.80183e+00 446 2003 7 2.94129e+01 1.02249e+00 347 2003 8 2.84592e+01 1.44452e+00 472 2003 9 2.79741e+01 1.68940e+00 544 2003 10 2.39183e+01 9.67083e-01 619 2003 11 2.19522e+01 1.37274e+00 733 2003 12 1.60686e+01 1.58330e+00 401 2004 1 1.41593e+01 1.45649e+00 359 2004 2 1.36217e+01 1.03694e+00 196 2004 3 1.75182e+01 1.99413e+00 574 2004 4 2.01707e+01 1.60108e+00 689 2004 5 2.55298e+01 1.57135e+00 902 2004 6 2.87847e+01 1.32066e+00 621 2004 7 2.94553e+01 1.66723e+00 505 2004 8 2.98392e+01 1.20510e+00 541 2004 9 2.73700e+01 2.04854e+00 541 2004 10 2.49540e+01 1.36435e+00 759 2004 11 2.24572e+01 2.16667e+00 499 2004 12 1.64514e+01 2.21675e+00 439 2005 1 1.42992e+01 9.03035e-01 284 2005 2 1.40651e+01 1.25738e+00 300 2005 3 1.64992e+01 1.54213e+00 535 2005 4 2.00569e+01 9.46607e-01 635 2005 5 2.41689e+01 2.06002e+00 776 2005 6 2.78586e+01 1.04611e+00 568 2005 7 2.95545e+01 1.51450e+00 649 2005 8 2.96275e+01 1.46996e+00 608 2005 9 2.80247e+01 1.08143e+00 705 2005 10 2.54409e+01 1.97325e+00 775 2005 11 2.06349e+01 1.58944e+00 479 2005 12 1.57117e+01 1.88339e+00 439 2006 1 1.51173e+01 1.20883e+00 390 2006 2 1.53306e+01 8.55022e-01 455 2006 3 1.80622e+01 1.17496e+00 680 2006 4 2.18904e+01 1.80408e+00 846 2006 5 2.47252e+01 1.20221e+00 704 2006 6 2.81507e+01 1.23333e+00 728 2006 7 3.01623e+01 1.27072e+00 561 2006 8 3.05305e+01 1.13020e+00 791 2006 9 2.87602e+01 1.45010e+00 670 2006 10 2.52959e+01 1.92743e+00 786 2006 11 1.88853e+01 1.87621e+00 561 2006 12 1.62692e+01 1.38411e+00 289 2007 1 1.51767e+01 1.07089e+00 166 2007 2 1.42180e+01 9.93233e-01 330 2007 3 1.82293e+01 1.43453e+00 692 2007 4 2.06262e+01 1.40529e+00 527 2007 5 2.42570e+01 1.11043e+00 911 2007 6 2.71297e+01 2.07224e+00 616 2007 7 2.94201e+01 1.50168e+00 535 2007 8 3.04316e+01 1.23553e+00 628 2007 9 2.86581e+01 1.56887e+00 572 2007 10 2.62832e+01 1.03925e+00 476 2007 11 2.03831e+01 1.38606e+00 766 2007 12 1.78227e+01 1.16758e+00 341 2008 1 1.44411e+01 1.39806e+00 254 2008 2 1.61275e+01 8.28268e-01 365 2008 3 1.80778e+01 1.39653e+00 556 2008 4 2.14813e+01 1.24532e+00 709 2008 5 2.47593e+01 1.61746e+00 688 2008 6 2.84971e+01 1.16230e+00 656 2008 7 2.88513e+01 1.47330e+00 474 2008 8 2.83283e+01 1.44509e+00 443 2008 9 2.77548e+01 1.70888e+00 580 2008 10 2.42306e+01 1.59181e+00 807 2008 11 1.84718e+01 2.04595e+00 597 2008 12 1.57268e+01 1.05805e+00 396 2009 1 1.51501e+01 1.44963e+00 517 2009 2 1.46593e+01 9.64986e-01 569 2009 3 1.76287e+01 1.97424e+00 588 2009 4 2.13633e+01 1.62064e+00 626 2009 5 2.52789e+01 1.24267e+00 574 2009 6 2.69976e+01 1.34781e+00 669 2009 7 2.83963e+01 1.20337e+00 617 2009 8 2.95706e+01 1.12515e+00 591 2009 9 2.82851e+01 8.50977e-01 576 2009 10 2.59447e+01 2.26567e+00 638 2009 11 2.04344e+01 1.43614e+00 413 2009 12 1.59398e+01 1.92007e+00 134 2010 1 1.30519e+01 1.63204e+00 455 2010 2 1.34587e+01 7.52766e-01 380 2010 3 1.53801e+01 1.49914e+00 439 2010 4 2.09791e+01 1.62768e+00 599 2010 5 2.66087e+01 2.25467e+00 740 2010 6 3.00995e+01 1.26616e+00 792 2010 7 2.93316e+01 1.52287e+00 662 2010 8 3.00472e+01 1.31316e+00 326 2010 9 2.92653e+01 1.03655e+00 790 2010 10 2.51451e+01 1.12344e+00 938 2010 11 2.07200e+01 1.23710e+00 703 2010 12 1.53676e+01 2.61724e+00 650 2011 1 1.21552e+01 7.06317e-01 466 2011 2 1.36412e+01 1.30090e+00 222 2011 3 1.83392e+01 1.24973e+00 470 2011 4 2.27842e+01 1.82099e+00 844 2011 5 2.52711e+01 1.40963e+00 815 2011 6 2.94977e+01 1.02646e+00 672 2011 7 2.98748e+01 9.49338e-01 476 2011 8 3.02564e+01 9.88544e-01 736 2011 9 2.80634e+01 7.87155e-01 616 2011 10 2.45200e+01 1.59441e+00 774 2011 11 1.92552e+01 9.84667e-01 492 2011 12 1.71128e+01 9.82211e-01 289 2012 1 1.58386e+01 1.03617e+00 527 2012 2 1.56321e+01 1.28386e+00 185 2012 3 2.05204e+01 2.20165e+00 657 2012 4 2.29563e+01 8.67908e-01 874 2012 5 2.62816e+01 1.20756e+00 741 2012 6 2.71937e+01 1.15597e+00 561 2012 7 2.91863e+01 1.18365e+00 514 2012 8 2.89379e+01 1.03175e+00 339 2012 9 2.79044e+01 1.42285e+00 575 2012 10 2.53217e+01 1.25221e+00 671 2012 11 1.98845e+01 1.29772e+00 642 2012 12 1.67546e+01 1.31212e+00 342 2013 1 1.57083e+01 1.04983e+00 276 2013 2 1.65270e+01 7.88294e-01 372 2013 3 1.68885e+01 1.04567e+00 635 2013 4 2.05280e+01 1.82447e+00 573 2013 5 2.41313e+01 1.71607e+00 619 2013 6 2.78413e+01 1.23144e+00 621 2013 7 2.85555e+01 1.29998e+00 309 2013 8 2.99358e+01 1.33430e+00 475 2013 9 2.93794e+01 1.35087e+00 757 2013 10 2.53575e+01 1.42590e+00 638 2013 11 1.97040e+01 2.44809e+00 382 2013 12 1.69794e+01 1.34233e+00 308 2014 1 1.36406e+01 9.13448e-01 289 2014 2 1.47916e+01 1.35146e+00 284 2014 3 1.67202e+01 1.35781e+00 501 2014 4 2.00540e+01 1.64160e+00 537 2014 5 2.47196e+01 1.74779e+00 639 2014 6 2.82334e+01 1.54642e+00 640 2014 7 2.88328e+01 1.06084e+00 607 2014 8 2.92250e+01 1.47559e+00 799 2014 9 2.90747e+01 1.25295e+00 427 2014 10 2.52893e+01 1.37162e+00 877 2014 11 1.91310e+01 2.30302e+00 504 2014 12 1.63035e+01 8.36580e-01 493 2015 1 1.44636e+01 1.45059e+00 389 2015 2 1.46115e+01 9.16085e-01 399 2015 3 1.81324e+01 1.91545e+00 413 2015 4 2.17571e+01 2.01441e+00 297 2015 5 2.61607e+01 1.61298e+00 793 2015 6 2.93865e+01 1.24693e+00 617 2015 7 2.96593e+01 1.37676e+00 478 2015 8 3.02257e+01 1.37899e+00 422 2015 9 2.80168e+01 1.67350e+00 360 2015 10 2.42119e+01 1.38844e+00 631 2015 11 2.20973e+01 2.40851e+00 475 2015 12 1.87340e+01 8.69080e-01 287 2016 1 1.55642e+01 1.65349e+00 441 2016 2 1.57874e+01 1.05822e+00 432 2016 3 1.89242e+01 1.40279e+00 402 2016 4 2.16461e+01 1.71293e+00 593 2016 5 2.50175e+01 1.37064e+00 714 2016 6 2.86986e+01 1.17313e+00 701 2016 7 3.06674e+01 1.33826e+00 890 2016 8 3.03019e+01 1.56926e+00 607 2016 9 2.93318e+01 9.63439e-01 673 2016 10 2.61324e+01 1.66608e+00 867 2016 11 2.15816e+01 1.72022e+00 677 2016 12 1.79752e+01 1.19492e+00 335 2017 1 1.68457e+01 1.48067e+00 322 2017 2 1.80734e+01 1.68075e+00 505 2017 3 1.87622e+01 1.53230e+00 647 2017 4 2.27789e+01 1.36248e+00 690 2017 5 2.50505e+01 1.42070e+00 542 2017 6 2.81573e+01 1.67831e+00 435 2017 7 2.99591e+01 1.48469e+00 551 2017 8 2.94163e+01 1.53493e+00 485 2017 9 2.81669e+01 1.50723e+00 643 2017 10 2.53043e+01 1.57124e+00 877 2017 11 2.08855e+01 1.32378e+00 686 2017 12 1.76814e+01 1.89022e+00 400 2018 1 1.20876e+01 1.43217e+00 367 2018 2 1.66906e+01 3.02731e+00 207 2018 3 1.84313e+01 1.52929e+00 673 2018 4 2.08334e+01 1.27782e+00 618 2018 5 2.50729e+01 1.83973e+00 629 2018 6 2.82166e+01 1.43164e+00 567 2018 7 3.01168e+01 1.32753e+00 506 2018 8 2.99090e+01 1.07459e+00 469 2018 9 3.02193e+01 1.20336e+00 717 2018 10 2.73584e+01 2.18574e+00 787 2018 11 2.06098e+01 2.02177e+00 288 2018 12 1.62426e+01 1.87244e+00 260 2019 1 1.58687e+01 1.37912e+00 386 2019 2 1.68562e+01 1.85517e+00 140 2019 3 1.84991e+01 1.40826e+00 484 2019 4 2.20652e+01 1.53905e+00 475 2019 5 2.71464e+01 1.95251e+00 931 2019 6 2.89260e+01 1.07721e+00 439 2019 7 2.99840e+01 1.37583e+00 441 2019 8 3.03492e+01 1.04029e+00 490 2019 9 2.93929e+01 9.63532e-01 948 2019 10 2.68474e+01 2.18235e+00 654 2019 11 1.93762e+01 2.07660e+00 564 2019 12 1.67680e+01 1.16518e+00 369 2020 1 1.58520e+01 1.17357e+00 499 2020 2 1.56418e+01 9.48953e-01 441 2020 3 2.02855e+01 3.23036e+00 510 2020 4 2.25558e+01 9.28417e-01 431 2020 5 2.42871e+01 1.28045e+00 632 2020 6 2.88040e+01 1.48757e+00 515 2020 7 2.90249e+01 1.33999e+00 437 2020 8 3.07954e+01 8.18911e-01 443 2020 9 2.84630e+01 1.97056e+00 413 2020 10 2.51531e+01 9.85481e-01 666 2020 11 2.21514e+01 1.70056e+00 797 2020 12 1.67909e+01 1.55875e+00 753 2021 1 1.48533e+01 1.03902e+00 397 2021 2 1.57732e+01 1.60101e+00 434 2021 3 1.80744e+01 1.08275e+00 541 2021 4 2.10630e+01 1.30718e+00 662 2021 5 2.48720e+01 1.21785e+00 749 2021 6 2.77792e+01 1.17073e+00 405 2021 7 2.93553e+01 1.18831e+00 436 2021 8 3.00380e+01 1.33506e+00 509 2021 9 2.83273e+01 1.06603e+00 547 2021 10 2.60482e+01 1.50009e+00 595 2021 11 2.05221e+01 1.50906e+00 705 2021 12 1.80329e+01 6.34090e-01 463 2022 1 1.61159e+01 1.84574e+00 596 2022 2 1.57605e+01 1.72431e+00 521 2022 3 1.88703e+01 9.66903e-01 630 2022 4 2.27099e+01 1.27864e+00 444 2022 5 2.61414e+01 1.44189e+00 630 2022 6 2.97280e+01 1.60478e+00 664 2022 7 3.07704e+01 9.10900e-01 544 2022 8 3.07948e+01 1.18715e+00 495 2022 9 2.84618e+01 1.74322e+00 546 2022 10 2.42797e+01 1.33889e+00 815 2022 11 2.15566e+01 1.74840e+00 437 2022 12 1.72551e+01 2.19977e+00 739 2023 1 1.58184e+01 6.61449e-01 583 2023 2 1.72611e+01 1.24484e+00 523 2023 3 2.02543e+01 1.41929e+00 577 2023 4 2.24741e+01 7.91199e-01 532 2023 5 2.51037e+01 1.53387e+00 660 2023 6 2.73036e+01 1.60435e+00 597 2023 7 2.94559e+01 1.24978e+00 644 2023 8 3.10038e+01 1.04455e+00 715 2023 9 2.95044e+01 1.23877e+00 636 2023 10 2.45070e+01 1.17193e+00 721 2023 11 2.08678e+01 1.49422e+00 535 2023 12 1.59135e+01 1.25657e+00 394 2024 1 1.41090e+01 7.74990e-01 321 2024 2 1.54334e+01 9.60008e-01 490 2024 3 1.88564e+01 1.25815e+00 425 2024 4 2.04698e+01 2.50856e-01 32