YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.18702e+01 8.78163e-01 61 2000 3 2.42895e+01 1.04868e+00 162 2000 4 2.55538e+01 8.33733e-01 150 2000 5 2.66896e+01 1.85974e+00 80 2000 6 2.86871e+01 1.46432e+00 115 2000 7 2.98596e+01 1.02882e+00 153 2000 8 2.85846e+01 1.79642e+00 95 2000 9 3.06575e+01 6.64663e-01 95 2000 10 2.63804e+01 2.54984e+00 137 2000 11 2.39441e+01 7.94251e-01 144 2000 12 2.30227e+01 1.00985e+00 84 2001 1 2.03642e+01 1.53035e+00 56 2001 2 2.30493e+01 1.36770e+00 153 2001 3 2.25793e+01 1.77629e+00 153 2001 4 2.54083e+01 1.58020e+00 144 2001 5 2.60544e+01 1.94347e+00 96 2001 6 2.98408e+01 1.16119e+00 65 2001 7 2.89785e+01 1.58355e+00 112 2001 8 3.02128e+01 1.56080e+00 127 2001 9 2.86287e+01 7.29657e-01 48 2001 10 2.67570e+01 8.24745e-01 48 2001 11 2.38284e+01 1.17148e+00 96 2001 12 2.38505e+01 1.29894e+00 127 2002 1 2.26551e+01 2.01736e+00 176 2002 2 2.21682e+01 2.13426e-01 48 2002 3 2.48996e+01 1.83086e+00 103 2002 4 2.75108e+01 7.02647e-01 144 2002 5 2.79254e+01 1.20579e+00 126 2002 6 2.80284e+01 3.71677e-01 44 2002 7 2.93211e+01 1.52404e+00 547 2002 8 2.98135e+01 1.15231e+00 485 2002 9 2.91522e+01 1.11808e+00 375 2002 10 2.83958e+01 8.55982e-01 807 2002 11 2.46363e+01 2.32962e+00 526 2002 12 2.09084e+01 1.49049e+00 529 2003 1 1.71739e+01 1.95055e+00 451 2003 2 2.21941e+01 1.92982e+00 709 2003 3 2.65521e+01 1.16571e+00 523 2003 4 2.48135e+01 2.00746e+00 579 2003 5 2.83643e+01 1.61423e+00 573 2003 6 2.86966e+01 1.43166e+00 289 2003 7 2.94821e+01 1.18268e+00 529 2003 8 2.92720e+01 1.07393e+00 395 2003 9 2.90792e+01 1.23576e+00 404 2003 10 2.75218e+01 1.33991e+00 603 2003 11 2.42676e+01 9.17038e-01 540 2003 12 1.94617e+01 1.68863e+00 479 2004 1 2.02623e+01 1.40475e+00 623 2004 2 2.17753e+01 1.51201e+00 592 2004 3 2.29158e+01 1.09263e+00 436 2004 4 2.33981e+01 1.66338e+00 670 2004 5 2.67545e+01 1.63699e+00 652 2004 6 3.01454e+01 9.81071e-01 522 2004 7 3.03501e+01 1.27649e+00 629 2004 8 3.01887e+01 1.75136e+00 298 2004 9 2.83747e+01 1.20832e+00 448 2004 10 2.65536e+01 1.19487e+00 527 2004 11 2.38282e+01 1.34242e+00 646 2004 12 2.12455e+01 2.11882e+00 411 2005 1 1.98509e+01 2.08088e+00 676 2005 2 2.03370e+01 1.30227e+00 526 2005 3 2.23451e+01 2.27602e+00 574 2005 4 2.35091e+01 1.08929e+00 730 2005 5 2.62889e+01 1.79311e+00 617 2005 6 2.89189e+01 1.32840e+00 258 2005 7 3.00805e+01 1.14238e+00 612 2005 8 3.04009e+01 1.44732e+00 566 2005 9 2.96998e+01 1.54103e+00 454 2005 10 2.71534e+01 2.71164e+00 299 2005 11 2.36067e+01 1.49212e+00 737 2005 12 2.13597e+01 1.63576e+00 598 2006 1 2.04413e+01 1.65463e+00 472 2006 2 2.09594e+01 2.15973e+00 644 2006 3 2.29352e+01 1.32542e+00 763 2006 4 2.51523e+01 1.71707e+00 721 2006 5 2.67489e+01 1.66773e+00 684 2006 6 2.93342e+01 1.17926e+00 518 2006 7 2.86832e+01 1.57615e+00 380 2006 8 3.01530e+01 1.29951e+00 474 2006 9 2.89806e+01 1.15422e+00 502 2006 10 2.70297e+01 1.56585e+00 598 2006 11 2.20259e+01 2.40294e+00 368 2006 12 2.25732e+01 1.40518e+00 360 2007 1 2.24571e+01 1.33812e+00 585 2007 2 2.05101e+01 1.09298e+00 343 2007 3 2.26375e+01 9.55287e-01 491 2007 4 2.42825e+01 1.34828e+00 673 2007 5 2.60660e+01 1.42533e+00 656 2007 6 2.82225e+01 1.35141e+00 370 2007 7 3.04633e+01 1.21626e+00 488 2007 8 3.05540e+01 9.78811e-01 668 2007 9 2.95677e+01 1.48967e+00 507 2007 10 2.74828e+01 1.04374e+00 345 2007 11 2.36672e+01 1.17369e+00 644 2007 12 2.32754e+01 1.51381e+00 607 2008 1 2.08749e+01 1.37590e+00 495 2008 2 2.32313e+01 1.54711e+00 572 2008 3 2.30738e+01 1.45181e+00 469 2008 4 2.48037e+01 1.47262e+00 704 2008 5 2.73042e+01 1.90645e+00 752 2008 6 2.84028e+01 8.35297e-01 530 2008 7 2.97809e+01 1.47966e+00 533 2008 8 3.00153e+01 1.52712e+00 474 2008 9 2.83483e+01 9.68780e-01 472 2008 10 2.63786e+01 2.18019e+00 434 2008 11 2.19839e+01 2.02907e+00 656 2008 12 2.12752e+01 1.32415e+00 560 2009 1 2.03042e+01 2.07144e+00 545 2009 2 2.06212e+01 1.73384e+00 577 2009 3 2.17757e+01 1.95213e+00 469 2009 4 2.46176e+01 1.13044e+00 646 2009 5 2.74567e+01 1.29279e+00 620 2009 6 2.97757e+01 1.39722e+00 444 2009 7 3.01046e+01 1.21788e+00 556 2009 8 3.01845e+01 1.12967e+00 668 2009 9 2.93595e+01 1.07134e+00 328 2009 10 2.85098e+01 1.92159e+00 703 2009 11 2.40561e+01 2.31159e+00 485 2009 12 2.34162e+01 2.10391e+00 408 2010 1 1.91389e+01 1.92136e+00 309 2010 2 1.88203e+01 2.05374e+00 281 2010 3 1.94326e+01 2.05553e+00 475 2010 4 2.34370e+01 1.34770e+00 532 2010 5 2.80989e+01 1.47569e+00 715 2010 6 3.05720e+01 1.27612e+00 651 2010 7 2.96678e+01 1.65057e+00 358 2010 8 3.08828e+01 1.48400e+00 463 2010 9 2.92748e+01 1.04013e+00 518 2010 10 2.64557e+01 1.17427e+00 736 2010 11 2.34367e+01 1.70922e+00 561 2010 12 1.88598e+01 2.43423e+00 452 2011 1 1.91283e+01 1.53436e+00 516 2011 2 2.19869e+01 1.66354e+00 726 2011 3 2.32659e+01 1.59765e+00 715 2011 4 2.67287e+01 1.17411e+00 760 2011 5 2.73013e+01 8.78914e-01 798 2011 6 2.90545e+01 1.58602e+00 617 2011 7 3.01866e+01 1.39413e+00 557 2011 8 2.96690e+01 1.30631e+00 358 2011 9 2.97510e+01 1.02345e+00 614 2011 10 2.61538e+01 2.48719e+00 374 2011 11 2.35629e+01 1.09574e+00 686 2011 12 2.21880e+01 1.04841e+00 571 2012 1 1.98093e+01 2.16325e+00 592 2012 2 2.24547e+01 1.88095e+00 430 2012 3 2.37305e+01 1.35933e+00 691 2012 4 2.48063e+01 1.28969e+00 570 2012 5 2.70119e+01 1.43157e+00 508 2012 6 2.87186e+01 1.25547e+00 398 2012 7 2.97337e+01 1.17261e+00 551 2012 8 2.98818e+01 1.40471e+00 543 2012 9 2.92002e+01 1.47659e+00 480 2012 10 2.66336e+01 2.20897e+00 562 2012 11 2.20986e+01 1.68310e+00 562 2012 12 2.27001e+01 1.42684e+00 448 2013 1 2.21961e+01 1.04823e+00 544 2013 2 2.21545e+01 1.54501e+00 596 2013 3 2.08903e+01 1.43122e+00 491 2013 4 2.53949e+01 1.48435e+00 572 2013 5 2.67575e+01 1.26667e+00 722 2013 6 2.89434e+01 1.34296e+00 385 2013 7 2.91391e+01 1.20056e+00 483 2013 8 2.93966e+01 9.73050e-01 362 2013 9 2.90811e+01 9.09284e-01 403 2013 10 2.75467e+01 1.34572e+00 714 2013 11 2.53374e+01 9.48267e-01 367 2013 12 2.31570e+01 1.19878e+00 548 2014 1 2.06172e+01 2.14570e+00 410 2014 2 2.39258e+01 1.70076e+00 685 2014 3 2.40090e+01 8.58316e-01 664 2014 4 2.59090e+01 1.72628e+00 658 2014 5 2.66425e+01 1.50266e+00 476 2014 6 2.92036e+01 1.82668e+00 483 2014 7 2.99376e+01 1.28159e+00 531 2014 8 3.10203e+01 1.22597e+00 711 2014 9 2.93853e+01 1.08220e+00 421 2014 10 2.66949e+01 1.64873e+00 572 2014 11 2.31293e+01 1.74869e+00 645 2014 12 2.18172e+01 1.75055e+00 600 2015 1 2.23625e+01 1.92084e+00 425 2015 2 1.97736e+01 1.44139e+00 577 2015 3 2.51864e+01 1.39382e+00 835 2015 4 2.72377e+01 1.88760e+00 691 2015 5 2.75223e+01 1.26720e+00 662 2015 6 2.99299e+01 1.48950e+00 474 2015 7 2.99102e+01 1.01481e+00 482 2015 8 3.07330e+01 9.73108e-01 584 2015 9 3.01220e+01 1.35129e+00 311 2015 10 2.74869e+01 1.60518e+00 462 2015 11 2.70252e+01 2.01957e+00 551 2015 12 2.44019e+01 1.01073e+00 394 2016 1 2.08267e+01 2.63331e+00 181 2016 2 2.08760e+01 1.36664e+00 486 2016 3 2.37705e+01 2.01969e+00 269 2016 4 2.54586e+01 1.18279e+00 668 2016 5 2.75340e+01 1.53207e+00 652 2016 6 2.98195e+01 1.09649e+00 580 2016 7 3.07068e+01 1.00097e+00 644 2016 8 3.08318e+01 1.30130e+00 441 2016 9 3.02911e+01 1.77863e+00 608 2016 10 2.69756e+01 1.64204e+00 448 2016 11 2.37225e+01 1.33720e+00 630 2016 12 2.42681e+01 6.97404e-01 599 2017 1 2.18865e+01 1.44676e+00 640 2017 2 2.27986e+01 1.14931e+00 716 2017 3 2.32146e+01 1.37250e+00 780 2017 4 2.46547e+01 1.33825e+00 405 2017 5 2.72949e+01 1.41888e+00 795 2017 6 2.92374e+01 1.47871e+00 259 2017 7 3.07287e+01 1.05457e+00 524 2017 8 3.11846e+01 1.40838e+00 564 2017 9 3.00010e+01 1.32453e+00 569 2017 10 2.70971e+01 1.95161e+00 506 2017 11 2.46085e+01 1.17953e+00 707 2017 12 2.29926e+01 1.69139e+00 779 2018 1 1.98938e+01 1.15110e+00 264 2018 2 2.43274e+01 1.25283e+00 685 2018 3 2.26708e+01 1.66197e+00 879 2018 4 2.57690e+01 1.18600e+00 759 2018 5 2.57707e+01 1.45430e+00 298 2018 6 2.97711e+01 1.03606e+00 372 2018 7 3.08361e+01 8.87624e-01 484 2018 8 3.02984e+01 9.26641e-01 679 2018 9 3.01558e+01 1.28059e+00 521 2018 10 2.78140e+01 1.24569e+00 755 2018 11 2.59407e+01 1.89690e+00 512 2018 12 2.17678e+01 1.39412e+00 537 2019 1 2.15440e+01 1.72739e+00 672 2019 2 2.38754e+01 1.88530e+00 681 2019 3 2.45501e+01 1.51193e+00 691 2019 4 2.60744e+01 1.06510e+00 698 2019 5 2.82179e+01 1.33653e+00 798 2019 6 3.08300e+01 1.43360e+00 557 2019 7 3.05450e+01 1.43531e+00 552 2019 8 3.04474e+01 1.23027e+00 443 2019 9 2.88398e+01 1.40592e+00 614 2019 10 2.81666e+01 8.57915e-01 646 2019 11 2.48914e+01 2.44544e+00 585 2019 12 2.27801e+01 1.04177e+00 468 2020 1 2.24163e+01 1.26344e+00 509 2020 2 2.29954e+01 1.82910e+00 543 2020 3 2.45541e+01 1.98486e+00 768 2020 4 2.73470e+01 1.17973e+00 665 2020 5 2.70044e+01 1.52537e+00 537 2020 6 2.97818e+01 1.52625e+00 430 2020 7 3.04913e+01 1.57896e+00 470 2020 8 3.10028e+01 1.52146e+00 517 2020 9 2.97257e+01 1.19793e+00 468 2020 10 2.87074e+01 1.16250e+00 577 2020 11 2.51449e+01 1.50337e+00 373 2020 12 2.20708e+01 1.17727e+00 459 2021 1 2.13591e+01 1.50213e+00 534 2021 2 2.31453e+01 2.33979e+00 590 2021 3 2.43579e+01 1.74511e+00 686 2021 4 2.54229e+01 1.81348e+00 646 2021 5 2.73226e+01 1.77240e+00 651 2021 6 2.87640e+01 1.78304e+00 210 2021 7 2.98646e+01 1.29812e+00 578 2021 8 3.05479e+01 1.20302e+00 548 2021 9 2.94801e+01 1.18441e+00 581 2021 10 2.78622e+01 1.09635e+00 508 2021 11 2.32530e+01 1.51728e+00 523 2021 12 2.38228e+01 1.36982e+00 810 2022 1 2.18093e+01 1.85856e+00 436 2022 2 2.25448e+01 1.57675e+00 589 2022 3 2.47925e+01 1.27774e+00 758 2022 4 2.58355e+01 1.30789e+00 409 2022 5 2.81129e+01 1.12656e+00 780 2022 6 2.97850e+01 1.35104e+00 542 2022 7 3.01378e+01 1.06186e+00 491 2022 8 3.03463e+01 9.14311e-01 593 2022 9 3.05714e+01 1.51802e+00 543 2022 10 2.65930e+01 1.31926e+00 563 2022 11 2.64539e+01 8.99739e-01 737 2022 12 2.35521e+01 1.66620e+00 584 2023 1 2.15924e+01 1.80669e+00 823 2023 2 2.42017e+01 1.31026e+00 846 2023 3 2.51491e+01 1.63720e+00 624 2023 4 2.69724e+01 1.22901e+00 553 2023 5 2.80190e+01 1.17887e+00 618 2023 6 2.99373e+01 1.00322e+00 414 2023 7 3.18416e+01 1.00762e+00 412 2023 8 3.08578e+01 1.19946e+00 514 2023 9 3.03465e+01 1.16998e+00 482 2023 10 2.72037e+01 2.02434e+00 706 2023 11 2.51882e+01 1.23523e+00 511 2023 12 2.20470e+01 2.02981e+00 266 2024 1 2.17059e+01 2.01057e+00 274 2024 2 2.07440e+01 1.27889e+00 587 2024 3 2.51064e+01 1.14923e+00 537 2024 4 2.42576e+01 5.94410e-01 64