YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.92642e+01 2.29027e-01 13 2000 3 2.02955e+01 6.56008e-01 170 2000 4 2.14340e+01 1.32623e+00 143 2000 5 2.53459e+01 1.60119e+00 180 2000 6 2.76393e+01 7.40856e-01 144 2000 7 2.94421e+01 6.50549e-01 170 2000 8 2.87132e+01 1.30198e+00 55 2000 9 2.85641e+01 8.58063e-01 174 2000 10 2.60186e+01 9.61793e-01 228 2000 11 2.48575e+01 4.70323e-01 81 2000 12 2.14488e+01 1.42342e+00 129 2001 1 1.81808e+01 1.44451e+00 144 2001 2 1.89062e+01 5.33523e-01 54 2001 3 1.83904e+01 9.10048e-01 80 2001 4 2.12373e+01 1.25460e+00 144 2001 5 2.41766e+01 1.49409e+00 239 2001 6 2.60201e+01 9.51552e-01 48 2001 7 2.80718e+01 1.31220e+00 98 2001 8 2.79999e+01 9.65650e-01 188 2001 9 2.83491e+01 7.75199e-01 164 2001 10 2.55922e+01 1.21233e+00 242 2001 11 2.33956e+01 4.59550e-01 199 2001 12 2.24932e+01 8.84304e-01 204 2002 1 1.92639e+01 7.49122e-01 110 2002 2 1.87061e+01 1.50922e+00 82 2002 3 1.92416e+01 4.73668e-01 74 2002 4 2.19447e+01 1.36172e+00 112 2002 5 2.53968e+01 1.26269e+00 203 2002 6 2.68933e+01 7.51757e-01 168 2002 7 2.93857e+01 1.48135e+00 588 2002 8 2.90591e+01 1.17682e+00 550 2002 9 2.87239e+01 6.86514e-01 348 2002 10 2.78047e+01 1.23051e+00 500 2002 11 2.34412e+01 1.73194e+00 468 2002 12 2.01482e+01 1.79917e+00 436 2003 1 1.73425e+01 1.08163e+00 592 2003 2 1.69187e+01 1.20137e+00 324 2003 3 1.87413e+01 1.56317e+00 368 2003 4 2.06282e+01 1.57476e+00 551 2003 5 2.52448e+01 1.75762e+00 506 2003 6 2.73304e+01 1.48889e+00 451 2003 7 2.85228e+01 1.54538e+00 545 2003 8 2.86418e+01 1.45296e+00 611 2003 9 2.84880e+01 8.82338e-01 537 2003 10 2.57634e+01 9.00550e-01 650 2003 11 2.46646e+01 8.70808e-01 811 2003 12 2.07110e+01 1.88770e+00 507 2004 1 1.93516e+01 1.62340e+00 374 2004 2 1.77749e+01 1.35923e+00 220 2004 3 1.88115e+01 9.92931e-01 728 2004 4 2.00766e+01 1.54901e+00 577 2004 5 2.44600e+01 2.02298e+00 821 2004 6 2.77809e+01 1.83631e+00 477 2004 7 3.01949e+01 9.79736e-01 680 2004 8 2.90325e+01 1.76607e+00 518 2004 9 2.77035e+01 1.39594e+00 589 2004 10 2.52961e+01 1.43036e+00 678 2004 11 2.39859e+01 1.08216e+00 515 2004 12 2.14102e+01 1.24684e+00 526 2005 1 1.96429e+01 1.34555e+00 480 2005 2 1.91678e+01 8.39785e-01 301 2005 3 1.81569e+01 1.19550e+00 438 2005 4 2.06714e+01 1.33370e+00 641 2005 5 2.38725e+01 1.89392e+00 849 2005 6 2.71783e+01 1.50060e+00 779 2005 7 2.88307e+01 1.52610e+00 695 2005 8 2.95427e+01 1.59316e+00 619 2005 9 2.88508e+01 1.17741e+00 865 2005 10 2.70438e+01 1.07124e+00 981 2005 11 2.33731e+01 1.40186e+00 616 2005 12 2.06217e+01 1.45836e+00 550 2006 1 1.87775e+01 1.14361e+00 476 2006 2 1.79073e+01 1.19165e+00 439 2006 3 1.94812e+01 1.15884e+00 635 2006 4 2.15782e+01 2.24713e+00 718 2006 5 2.45858e+01 1.57913e+00 781 2006 6 2.82582e+01 1.67232e+00 756 2006 7 2.93940e+01 1.34882e+00 553 2006 8 3.02520e+01 1.05507e+00 643 2006 9 2.93241e+01 1.14922e+00 730 2006 10 2.71936e+01 1.52466e+00 717 2006 11 2.26687e+01 1.47311e+00 737 2006 12 2.07319e+01 1.43285e+00 398 2007 1 1.93657e+01 1.18650e+00 327 2007 2 1.83466e+01 9.69032e-01 448 2007 3 1.83800e+01 1.17842e+00 593 2007 4 2.08363e+01 1.56283e+00 555 2007 5 2.37503e+01 8.90592e-01 838 2007 6 2.71316e+01 1.69657e+00 577 2007 7 2.89815e+01 9.86405e-01 478 2007 8 2.98459e+01 9.17396e-01 784 2007 9 2.87720e+01 1.22501e+00 631 2007 10 2.68717e+01 1.32582e+00 613 2007 11 2.39681e+01 1.13122e+00 773 2007 12 2.13057e+01 8.92473e-01 541 2008 1 1.96715e+01 9.39392e-01 479 2008 2 1.91548e+01 9.34402e-01 529 2008 3 1.82958e+01 9.07584e-01 449 2008 4 2.06655e+01 8.49349e-01 596 2008 5 2.40805e+01 2.56024e+00 680 2008 6 2.90869e+01 1.56037e+00 702 2008 7 2.92870e+01 1.02814e+00 606 2008 8 2.83341e+01 1.06588e+00 524 2008 9 2.78110e+01 8.93001e-01 667 2008 10 2.60899e+01 1.08665e+00 769 2008 11 2.38474e+01 1.05401e+00 822 2008 12 2.03943e+01 1.08008e+00 497 2009 1 1.89676e+01 1.54545e+00 535 2009 2 1.78832e+01 1.33895e+00 512 2009 3 1.89813e+01 1.28230e+00 665 2009 4 2.07776e+01 1.39874e+00 655 2009 5 2.49593e+01 1.65019e+00 728 2009 6 2.81266e+01 1.79752e+00 769 2009 7 2.85965e+01 1.31169e+00 557 2009 8 2.90550e+01 8.20375e-01 592 2009 9 2.82447e+01 7.97304e-01 484 2009 10 2.69403e+01 1.35026e+00 485 2009 11 2.31564e+01 1.40231e+00 555 2009 12 1.94164e+01 1.34484e+00 214 2010 1 1.85685e+01 1.49773e+00 456 2010 2 1.55238e+01 1.20736e+00 451 2010 3 1.67371e+01 1.19577e+00 531 2010 4 2.00153e+01 1.51048e+00 552 2010 5 2.59235e+01 2.34084e+00 665 2010 6 3.03847e+01 1.59027e+00 838 2010 7 2.94338e+01 1.34475e+00 849 2010 8 2.99739e+01 1.43728e+00 452 2010 9 2.90618e+01 8.31820e-01 872 2010 10 2.58872e+01 1.26903e+00 1106 2010 11 2.31744e+01 1.37035e+00 722 2010 12 2.04678e+01 1.69923e+00 675 2011 1 1.77142e+01 1.71431e+00 518 2011 2 1.69372e+01 1.17625e+00 405 2011 3 1.92717e+01 1.46755e+00 638 2011 4 2.22440e+01 1.40055e+00 719 2011 5 2.48506e+01 1.59092e+00 921 2011 6 2.95833e+01 1.08912e+00 845 2011 7 2.97983e+01 1.39197e+00 643 2011 8 3.05680e+01 1.51754e+00 878 2011 9 2.80787e+01 6.98470e-01 834 2011 10 2.62524e+01 1.42891e+00 965 2011 11 2.32197e+01 1.28827e+00 534 2011 12 2.11087e+01 5.96499e-01 418 2012 1 1.85356e+01 1.49348e+00 486 2012 2 1.77751e+01 1.75670e+00 175 2012 3 2.08913e+01 1.64066e+00 580 2012 4 2.24901e+01 8.42066e-01 847 2012 5 2.58802e+01 1.85506e+00 976 2012 6 2.69954e+01 1.08404e+00 640 2012 7 2.85604e+01 1.28628e+00 435 2012 8 2.89775e+01 1.39385e+00 528 2012 9 2.74419e+01 1.34384e+00 697 2012 10 2.65610e+01 8.70721e-01 988 2012 11 2.27213e+01 1.05893e+00 644 2012 12 2.18236e+01 1.44556e+00 420 2013 1 1.96600e+01 7.37205e-01 343 2013 2 1.94165e+01 1.29794e+00 312 2013 3 1.82219e+01 9.26833e-01 583 2013 4 2.06959e+01 1.41848e+00 380 2013 5 2.32698e+01 1.53879e+00 671 2013 6 2.76219e+01 1.61498e+00 640 2013 7 2.84534e+01 1.29381e+00 498 2013 8 2.87905e+01 1.21078e+00 528 2013 9 2.92158e+01 1.05045e+00 770 2013 10 2.68832e+01 1.35434e+00 640 2013 11 2.45709e+01 1.54667e+00 445 2013 12 2.15097e+01 1.79500e+00 393 2014 1 1.88615e+01 1.32072e+00 372 2014 2 1.74845e+01 1.16786e+00 384 2014 3 1.75361e+01 7.48541e-01 409 2014 4 1.95813e+01 1.47781e+00 528 2014 5 2.42366e+01 1.78650e+00 693 2014 6 2.83052e+01 1.72159e+00 705 2014 7 2.84834e+01 1.43123e+00 668 2014 8 2.93983e+01 1.09428e+00 687 2014 9 2.95085e+01 1.07024e+00 539 2014 10 2.66259e+01 1.04641e+00 919 2014 11 2.26081e+01 1.69910e+00 646 2014 12 2.11321e+01 1.51410e+00 538 2015 1 1.98080e+01 1.17560e+00 376 2015 2 1.93663e+01 9.35339e-01 517 2015 3 1.97088e+01 1.53747e+00 449 2015 4 2.22444e+01 9.92670e-01 336 2015 5 2.50444e+01 1.81949e+00 782 2015 6 2.86382e+01 1.20141e+00 681 2015 7 2.93846e+01 1.54110e+00 718 2015 8 2.98625e+01 9.74243e-01 714 2015 9 2.88405e+01 1.32209e+00 614 2015 10 2.60145e+01 1.08475e+00 631 2015 11 2.45367e+01 1.28220e+00 572 2015 12 2.28377e+01 8.31734e-01 414 2016 1 2.11071e+01 1.26226e+00 442 2016 2 1.83600e+01 1.15982e+00 555 2016 3 1.90272e+01 1.22672e+00 420 2016 4 2.07210e+01 1.48361e+00 541 2016 5 2.48336e+01 1.62128e+00 566 2016 6 2.89739e+01 1.24007e+00 619 2016 7 3.02628e+01 1.07336e+00 733 2016 8 2.97162e+01 1.12336e+00 544 2016 9 2.92794e+01 1.20828e+00 743 2016 10 2.74540e+01 1.33304e+00 937 2016 11 2.45726e+01 1.36544e+00 700 2016 12 2.22469e+01 1.25698e+00 607 2017 1 1.99923e+01 1.54638e+00 439 2017 2 1.91818e+01 1.48468e+00 538 2017 3 2.03724e+01 1.07133e+00 623 2017 4 2.22744e+01 9.37944e-01 788 2017 5 2.45912e+01 1.18279e+00 636 2017 6 2.72554e+01 1.06007e+00 322 2017 7 2.96231e+01 1.50434e+00 752 2017 8 2.98080e+01 1.56012e+00 555 2017 9 2.80556e+01 1.38666e+00 642 2017 10 2.69639e+01 9.46701e-01 721 2017 11 2.42728e+01 1.09147e+00 722 2017 12 2.18169e+01 1.42210e+00 447 2018 1 1.98807e+01 1.18366e+00 542 2018 2 2.07848e+01 1.13164e+00 480 2018 3 2.05395e+01 1.42757e+00 693 2018 4 2.09340e+01 8.83067e-01 687 2018 5 2.58353e+01 2.24274e+00 743 2018 6 2.88371e+01 1.59675e+00 544 2018 7 2.91981e+01 1.27016e+00 532 2018 8 2.90965e+01 1.18136e+00 571 2018 9 2.95084e+01 1.11377e+00 727 2018 10 2.79259e+01 1.55505e+00 814 2018 11 2.38307e+01 1.14109e+00 280 2018 12 1.98777e+01 1.89312e+00 300 2019 1 1.88156e+01 1.35247e+00 361 2019 2 1.96732e+01 9.37502e-01 176 2019 3 1.96388e+01 1.17369e+00 535 2019 4 2.06733e+01 9.63013e-01 420 2019 5 2.58626e+01 1.93503e+00 929 2019 6 2.89183e+01 1.34137e+00 569 2019 7 2.98746e+01 1.06272e+00 650 2019 8 2.98827e+01 1.42778e+00 480 2019 9 2.94338e+01 9.70940e-01 857 2019 10 2.79946e+01 1.26291e+00 530 2019 11 2.44339e+01 1.29402e+00 557 2019 12 2.17555e+01 1.11851e+00 431 2020 1 2.07141e+01 1.21802e+00 438 2020 2 1.94855e+01 1.25520e+00 448 2020 3 2.18230e+01 2.20289e+00 460 2020 4 2.23453e+01 1.08531e+00 437 2020 5 2.42996e+01 1.31515e+00 747 2020 6 2.72023e+01 7.34749e-01 496 2020 7 2.94528e+01 9.84121e-01 500 2020 8 3.04968e+01 7.99736e-01 468 2020 9 2.90097e+01 1.54800e+00 552 2020 10 2.57835e+01 8.44943e-01 631 2020 11 2.47327e+01 1.16662e+00 776 2020 12 2.19105e+01 1.56730e+00 627 2021 1 1.95105e+01 1.11154e+00 520 2021 2 1.83309e+01 8.86250e-01 372 2021 3 1.98223e+01 6.12879e-01 453 2021 4 2.17787e+01 7.46972e-01 656 2021 5 2.38495e+01 1.31346e+00 680 2021 6 2.72075e+01 1.21240e+00 460 2021 7 2.96368e+01 1.44289e+00 592 2021 8 3.01402e+01 1.21781e+00 514 2021 9 2.81272e+01 1.05314e+00 600 2021 10 2.66642e+01 1.09153e+00 512 2021 11 2.34182e+01 1.36753e+00 822 2021 12 2.13852e+01 7.69966e-01 632 2022 1 1.94430e+01 1.59070e+00 509 2022 2 1.88605e+01 1.18851e+00 531 2022 3 1.91371e+01 7.40304e-01 691 2022 4 2.16092e+01 8.11157e-01 422 2022 5 2.55828e+01 6.94579e-01 713 2022 6 2.90139e+01 1.71186e+00 688 2022 7 2.99113e+01 1.01413e+00 620 2022 8 3.00039e+01 9.69054e-01 460 2022 9 2.95758e+01 9.86361e-01 724 2022 10 2.61836e+01 1.34211e+00 796 2022 11 2.36441e+01 1.40015e+00 506 2022 12 2.24330e+01 1.22379e+00 649 2023 1 2.09317e+01 1.11865e+00 547 2023 2 2.02234e+01 1.04042e+00 587 2023 3 2.11512e+01 1.15589e+00 633 2023 4 2.14861e+01 8.53302e-01 404 2023 5 2.43211e+01 1.69521e+00 646 2023 6 2.74318e+01 1.93447e+00 663 2023 7 3.02939e+01 1.31601e+00 683 2023 8 3.09651e+01 9.70277e-01 900 2023 9 3.03858e+01 8.03980e-01 754 2023 10 2.63604e+01 1.80760e+00 819 2023 11 2.43147e+01 1.03656e+00 490 2023 12 2.14712e+01 1.09904e+00 400 2024 1 1.99179e+01 8.86685e-01 336 2024 2 1.89799e+01 5.77407e-01 446 2024 3 1.95187e+01 1.01635e+00 427 2024 4 2.01859e+01 3.97178e-01 48