YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.83431e+01 7.54751e-02 16 2000 3 1.94159e+01 1.01540e+00 157 2000 4 2.13603e+01 7.23421e-01 119 2000 5 2.51946e+01 1.44640e+00 177 2000 6 2.75880e+01 7.47010e-01 159 2000 7 2.94295e+01 5.94770e-01 126 2000 8 2.94284e+01 2.03702e-01 32 2000 9 2.86194e+01 8.92708e-01 144 2000 10 2.56105e+01 8.59036e-01 242 2000 11 2.40483e+01 7.63496e-01 98 2000 12 2.02354e+01 1.35595e+00 157 2001 1 1.68039e+01 1.58800e+00 172 2001 2 1.80533e+01 1.07678e+00 30 2001 3 1.81493e+01 7.61418e-01 80 2001 4 2.04567e+01 1.85444e+00 160 2001 5 2.42856e+01 1.25899e+00 224 2001 6 2.55051e+01 1.28528e+00 49 2001 7 2.81023e+01 1.66407e+00 96 2001 8 2.81690e+01 8.28594e-01 174 2001 9 2.83258e+01 6.00632e-01 192 2001 10 2.50425e+01 1.46153e+00 237 2001 11 2.25342e+01 6.66844e-01 201 2001 12 2.19163e+01 1.12593e+00 197 2002 1 1.78305e+01 9.68056e-01 108 2002 2 1.84107e+01 3.23671e-01 57 2002 3 1.68362e+01 1.50595e+00 43 2002 4 2.16843e+01 1.66966e+00 112 2002 5 2.54505e+01 1.44786e+00 200 2002 6 2.65265e+01 1.02523e+00 151 2002 7 2.94892e+01 1.48460e+00 631 2002 8 2.91103e+01 1.17099e+00 580 2002 9 2.83921e+01 9.04163e-01 379 2002 10 2.75691e+01 1.55813e+00 522 2002 11 2.23279e+01 1.85086e+00 503 2002 12 1.85805e+01 1.94315e+00 399 2003 1 1.70830e+01 1.15769e+00 606 2003 2 1.65624e+01 1.14642e+00 324 2003 3 1.87712e+01 1.33364e+00 328 2003 4 2.05769e+01 1.82248e+00 556 2003 5 2.55569e+01 1.61877e+00 570 2003 6 2.72595e+01 1.39421e+00 441 2003 7 2.90148e+01 1.17000e+00 546 2003 8 2.84834e+01 1.14383e+00 593 2003 9 2.85621e+01 8.16833e-01 650 2003 10 2.53978e+01 1.16433e+00 658 2003 11 2.39408e+01 9.81204e-01 774 2003 12 1.94108e+01 1.56357e+00 507 2004 1 1.81642e+01 1.27868e+00 294 2004 2 1.69071e+01 1.30150e+00 262 2004 3 1.82798e+01 1.17191e+00 601 2004 4 1.98668e+01 1.56698e+00 493 2004 5 2.43329e+01 2.14699e+00 797 2004 6 2.77257e+01 1.93729e+00 524 2004 7 2.98790e+01 1.17636e+00 695 2004 8 2.92733e+01 1.40992e+00 513 2004 9 2.76818e+01 1.51453e+00 621 2004 10 2.57456e+01 1.10906e+00 653 2004 11 2.36642e+01 1.57155e+00 468 2004 12 2.01013e+01 1.47405e+00 461 2005 1 1.81725e+01 1.59626e+00 536 2005 2 1.78878e+01 1.19381e+00 286 2005 3 1.77548e+01 1.07040e+00 389 2005 4 2.05495e+01 1.38585e+00 580 2005 5 2.36871e+01 1.99782e+00 814 2005 6 2.75644e+01 1.62584e+00 740 2005 7 2.90461e+01 1.54806e+00 658 2005 8 2.97508e+01 1.23932e+00 557 2005 9 2.89102e+01 1.10738e+00 879 2005 10 2.68334e+01 1.24851e+00 991 2005 11 2.22395e+01 1.58317e+00 538 2005 12 1.94804e+01 1.48456e+00 540 2006 1 1.75655e+01 1.32394e+00 438 2006 2 1.67387e+01 9.88820e-01 472 2006 3 1.81994e+01 1.14384e+00 620 2006 4 2.19127e+01 2.12472e+00 632 2006 5 2.46851e+01 1.59883e+00 738 2006 6 2.85380e+01 1.63479e+00 764 2006 7 2.94221e+01 1.38228e+00 539 2006 8 3.01411e+01 1.16480e+00 683 2006 9 2.91638e+01 1.12415e+00 711 2006 10 2.67017e+01 1.54455e+00 709 2006 11 2.19728e+01 1.53782e+00 756 2006 12 2.01143e+01 1.12141e+00 349 2007 1 1.89119e+01 1.14073e+00 308 2007 2 1.73752e+01 1.20194e+00 369 2007 3 1.78248e+01 1.15070e+00 610 2007 4 2.01894e+01 1.70301e+00 573 2007 5 2.35216e+01 1.12597e+00 769 2007 6 2.71527e+01 1.60768e+00 620 2007 7 2.88522e+01 1.08978e+00 491 2007 8 2.97891e+01 1.04766e+00 780 2007 9 2.90319e+01 1.15474e+00 580 2007 10 2.66020e+01 1.59456e+00 636 2007 11 2.31408e+01 1.13854e+00 772 2007 12 2.08690e+01 8.03095e-01 482 2008 1 1.87757e+01 1.05268e+00 479 2008 2 1.81327e+01 9.13910e-01 502 2008 3 1.76644e+01 1.21453e+00 475 2008 4 2.05449e+01 1.09995e+00 613 2008 5 2.41117e+01 2.24843e+00 760 2008 6 2.88987e+01 1.55075e+00 668 2008 7 2.87103e+01 1.37121e+00 598 2008 8 2.80477e+01 1.56347e+00 501 2008 9 2.77007e+01 8.38047e-01 707 2008 10 2.55809e+01 1.14958e+00 814 2008 11 2.31105e+01 1.17722e+00 788 2008 12 1.93800e+01 1.26358e+00 483 2009 1 1.79603e+01 1.19572e+00 537 2009 2 1.70700e+01 1.00955e+00 503 2009 3 1.81647e+01 1.22664e+00 592 2009 4 2.07604e+01 1.49388e+00 674 2009 5 2.48575e+01 1.50372e+00 663 2009 6 2.78617e+01 1.72000e+00 772 2009 7 2.80648e+01 1.17673e+00 568 2009 8 2.89647e+01 7.99755e-01 618 2009 9 2.80009e+01 1.02316e+00 568 2009 10 2.66634e+01 1.43959e+00 506 2009 11 2.19854e+01 1.84345e+00 597 2009 12 1.78540e+01 1.58429e+00 242 2010 1 1.66268e+01 1.63330e+00 381 2010 2 1.52369e+01 8.48744e-01 394 2010 3 1.67361e+01 1.15630e+00 540 2010 4 2.01032e+01 1.69027e+00 554 2010 5 2.59683e+01 2.20655e+00 658 2010 6 3.05324e+01 1.55279e+00 816 2010 7 2.97948e+01 1.15394e+00 731 2010 8 2.95355e+01 1.50228e+00 485 2010 9 2.91003e+01 8.56534e-01 866 2010 10 2.56245e+01 1.15816e+00 1078 2010 11 2.27710e+01 1.25699e+00 621 2010 12 1.88652e+01 1.95678e+00 726 2011 1 1.65315e+01 1.08112e+00 589 2011 2 1.60064e+01 1.21013e+00 244 2011 3 1.88152e+01 1.49226e+00 582 2011 4 2.23745e+01 1.51853e+00 701 2011 5 2.48835e+01 1.52560e+00 867 2011 6 2.97183e+01 1.09624e+00 778 2011 7 3.00248e+01 1.45843e+00 658 2011 8 3.01964e+01 1.35128e+00 881 2011 9 2.81276e+01 8.91392e-01 705 2011 10 2.57799e+01 1.57065e+00 1021 2011 11 2.27530e+01 1.33739e+00 546 2011 12 2.00696e+01 9.66202e-01 465 2012 1 1.74124e+01 1.14877e+00 513 2012 2 1.71937e+01 1.54283e+00 216 2012 3 2.05726e+01 1.97898e+00 557 2012 4 2.25114e+01 8.88394e-01 860 2012 5 2.63132e+01 1.70352e+00 953 2012 6 2.72028e+01 9.73979e-01 576 2012 7 2.85742e+01 1.45475e+00 492 2012 8 2.94209e+01 7.95879e-01 417 2012 9 2.73695e+01 1.22454e+00 734 2012 10 2.62243e+01 8.73416e-01 1010 2012 11 2.21012e+01 1.17280e+00 709 2012 12 2.09716e+01 1.62948e+00 439 2013 1 1.84076e+01 9.66835e-01 377 2013 2 1.85546e+01 1.05527e+00 348 2013 3 1.77293e+01 1.20089e+00 615 2013 4 2.06489e+01 1.20969e+00 331 2013 5 2.33311e+01 1.65796e+00 671 2013 6 2.73666e+01 1.48702e+00 640 2013 7 2.86288e+01 8.46929e-01 418 2013 8 2.87014e+01 1.27521e+00 573 2013 9 2.93481e+01 9.50740e-01 747 2013 10 2.66378e+01 1.54661e+00 630 2013 11 2.36080e+01 1.67318e+00 432 2013 12 2.08372e+01 1.27683e+00 418 2014 1 1.72950e+01 1.55712e+00 328 2014 2 1.64381e+01 1.05630e+00 309 2014 3 1.70254e+01 1.06838e+00 355 2014 4 1.97044e+01 1.49890e+00 569 2014 5 2.45983e+01 1.77106e+00 661 2014 6 2.83450e+01 1.78608e+00 712 2014 7 2.83390e+01 1.56020e+00 715 2014 8 2.91026e+01 1.18677e+00 780 2014 9 2.94139e+01 1.30891e+00 535 2014 10 2.64244e+01 1.24396e+00 914 2014 11 2.19273e+01 1.88661e+00 637 2014 12 2.01645e+01 8.93614e-01 445 2015 1 1.87456e+01 1.38598e+00 388 2015 2 1.80485e+01 1.10007e+00 475 2015 3 1.93469e+01 1.21422e+00 374 2015 4 2.20949e+01 1.07791e+00 369 2015 5 2.52033e+01 1.81743e+00 767 2015 6 2.84579e+01 1.12473e+00 729 2015 7 2.92942e+01 1.62025e+00 697 2015 8 2.96743e+01 1.05791e+00 751 2015 9 2.90025e+01 1.30739e+00 671 2015 10 2.54468e+01 1.18203e+00 691 2015 11 2.39146e+01 1.49055e+00 562 2015 12 2.19775e+01 7.45019e-01 487 2016 1 2.01557e+01 1.53705e+00 409 2016 2 1.79536e+01 1.11525e+00 590 2016 3 1.89407e+01 1.06406e+00 365 2016 4 2.09190e+01 1.05610e+00 542 2016 5 2.49796e+01 1.45287e+00 571 2016 6 2.90524e+01 1.28225e+00 662 2016 7 3.03408e+01 1.04406e+00 816 2016 8 2.95560e+01 1.37761e+00 506 2016 9 2.94060e+01 1.10664e+00 646 2016 10 2.72899e+01 1.39837e+00 809 2016 11 2.39427e+01 1.43884e+00 676 2016 12 2.09371e+01 1.45346e+00 499 2017 1 1.86790e+01 1.12586e+00 430 2017 2 1.90484e+01 1.27175e+00 487 2017 3 1.96487e+01 1.48024e+00 624 2017 4 2.25378e+01 9.76445e-01 781 2017 5 2.46560e+01 1.15034e+00 668 2017 6 2.73453e+01 1.40646e+00 318 2017 7 2.95713e+01 1.54879e+00 798 2017 8 2.99833e+01 1.27134e+00 574 2017 9 2.82496e+01 1.25734e+00 627 2017 10 2.64923e+01 1.14399e+00 751 2017 11 2.33783e+01 1.30492e+00 755 2017 12 2.06759e+01 9.11463e-01 404 2018 1 1.88321e+01 1.22610e+00 569 2018 2 2.02092e+01 1.40778e+00 440 2018 3 2.00838e+01 1.34439e+00 642 2018 4 2.09324e+01 8.67731e-01 725 2018 5 2.59437e+01 2.14608e+00 832 2018 6 2.86632e+01 1.75943e+00 608 2018 7 2.89172e+01 1.43801e+00 583 2018 8 2.92338e+01 9.98737e-01 632 2018 9 2.95205e+01 1.27112e+00 694 2018 10 2.75620e+01 1.61221e+00 823 2018 11 2.29784e+01 1.37585e+00 237 2018 12 1.85566e+01 1.50660e+00 296 2019 1 1.83429e+01 1.15521e+00 375 2019 2 1.77324e+01 1.52201e+00 188 2019 3 1.88623e+01 8.79664e-01 549 2019 4 2.06721e+01 9.68479e-01 501 2019 5 2.60425e+01 2.08279e+00 876 2019 6 2.88379e+01 1.51315e+00 538 2019 7 2.99079e+01 1.03844e+00 630 2019 8 2.99989e+01 1.24026e+00 454 2019 9 2.96138e+01 8.80868e-01 800 2019 10 2.81225e+01 1.32817e+00 518 2019 11 2.33074e+01 1.90900e+00 553 2019 12 2.05497e+01 8.32601e-01 394 2020 1 1.93338e+01 1.38076e+00 488 2020 2 1.83130e+01 1.11849e+00 433 2020 3 2.15127e+01 2.69668e+00 453 2020 4 2.19966e+01 1.08958e+00 511 2020 5 2.42009e+01 1.48572e+00 694 2020 6 2.73678e+01 9.21342e-01 500 2020 7 2.93567e+01 9.56092e-01 548 2020 8 3.03779e+01 8.91935e-01 536 2020 9 2.87305e+01 1.71167e+00 513 2020 10 2.54855e+01 7.80235e-01 639 2020 11 2.43385e+01 9.46539e-01 766 2020 12 2.04764e+01 1.55716e+00 638 2021 1 1.81676e+01 1.46077e+00 547 2021 2 1.68974e+01 1.02949e+00 439 2021 3 1.90379e+01 7.48033e-01 470 2021 4 2.08709e+01 8.07559e-01 622 2021 5 2.38059e+01 1.43522e+00 520 2021 6 2.74261e+01 1.21409e+00 457 2021 7 2.97767e+01 1.34119e+00 585 2021 8 3.01187e+01 1.12276e+00 500 2021 9 2.79949e+01 1.14059e+00 586 2021 10 2.65472e+01 1.03110e+00 535 2021 11 2.22708e+01 1.17189e+00 852 2021 12 2.00931e+01 8.19466e-01 642 2022 1 1.83672e+01 1.55388e+00 529 2022 2 1.70614e+01 1.24638e+00 573 2022 3 1.86369e+01 9.64164e-01 691 2022 4 2.14950e+01 9.59265e-01 454 2022 5 2.51722e+01 1.18082e+00 748 2022 6 2.92468e+01 1.69474e+00 667 2022 7 3.00958e+01 9.43081e-01 616 2022 8 3.01019e+01 1.24224e+00 409 2022 9 2.96940e+01 9.79337e-01 790 2022 10 2.58375e+01 1.45551e+00 779 2022 11 2.30480e+01 1.14493e+00 497 2022 12 2.12182e+01 1.08566e+00 618 2023 1 1.92410e+01 1.26764e+00 648 2023 2 1.90802e+01 1.42395e+00 457 2023 3 2.06780e+01 1.16209e+00 585 2023 4 2.17380e+01 6.77230e-01 448 2023 5 2.43208e+01 1.69091e+00 662 2023 6 2.75892e+01 1.85843e+00 652 2023 7 3.01111e+01 1.35972e+00 713 2023 8 3.06901e+01 1.10043e+00 961 2023 9 3.03124e+01 7.99750e-01 770 2023 10 2.62388e+01 1.82301e+00 737 2023 11 2.28297e+01 9.46361e-01 500 2023 12 2.02586e+01 1.09407e+00 398 2024 1 1.82489e+01 1.15383e+00 374 2024 2 1.77204e+01 9.19715e-01 496 2024 3 1.84644e+01 1.02734e+00 388 2024 4 1.96593e+01 3.32356e-01 48