YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 1.65185e+01 1.61532e-01 20 2000 3 1.97111e+01 1.50325e+00 149 2000 4 2.18492e+01 9.51997e-01 144 2000 5 2.54589e+01 2.03766e+00 216 2000 6 2.74071e+01 6.89285e-01 87 2000 7 2.96664e+01 9.65148e-01 128 2000 8 2.89851e+01 2.08342e+00 77 2000 9 2.69922e+01 7.36757e-01 64 2000 10 2.28908e+01 8.13305e-01 211 2000 11 2.07799e+01 2.36527e+00 145 2000 12 1.45376e+01 1.72853e+00 107 2001 1 1.27555e+01 1.41606e-01 32 2001 2 1.68748e+01 7.42250e-01 64 2001 3 1.66199e+01 1.62455e+00 69 2001 4 2.00898e+01 1.70597e+00 207 2001 5 2.42659e+01 1.56741e+00 216 2001 6 2.69957e+01 5.71793e-01 48 2001 7 2.97035e+01 5.93823e-01 48 2001 8 2.93750e+01 9.03528e-01 173 2001 9 2.66046e+01 1.12717e+00 117 2001 10 2.31020e+01 1.97029e+00 112 2001 11 1.98762e+01 7.20171e-01 176 2001 12 1.95951e+01 2.12004e+00 148 2002 1 1.39975e+01 7.75402e-02 32 2002 2 1.48271e+01 1.24925e+00 112 2002 3 1.67392e+01 3.59211e-01 19 2002 4 2.33606e+01 1.68445e+00 160 2002 5 2.61974e+01 1.31185e+00 184 2002 6 2.79635e+01 9.26871e-01 112 2002 7 2.91952e+01 1.47925e+00 419 2002 8 2.92697e+01 8.68220e-01 493 2002 9 2.85522e+01 1.07941e+00 465 2002 10 2.72320e+01 1.38926e+00 698 2002 11 2.12898e+01 2.43488e+00 511 2002 12 1.56340e+01 9.88853e-01 385 2003 1 1.34018e+01 1.06028e+00 584 2003 2 1.42017e+01 1.07628e+00 229 2003 3 2.02389e+01 1.19066e+00 312 2003 4 2.11845e+01 1.65826e+00 694 2003 5 2.62800e+01 1.33603e+00 645 2003 6 2.81759e+01 1.70920e+00 563 2003 7 2.93757e+01 1.39122e+00 439 2003 8 2.88121e+01 1.26330e+00 491 2003 9 2.83245e+01 1.03402e+00 556 2003 10 2.40969e+01 1.05586e+00 682 2003 11 2.20018e+01 1.48199e+00 797 2003 12 1.59104e+01 1.86100e+00 429 2004 1 1.32764e+01 1.06877e+00 381 2004 2 1.39158e+01 8.65078e-01 112 2004 3 1.78348e+01 1.35671e+00 619 2004 4 1.99785e+01 1.54594e+00 697 2004 5 2.55800e+01 1.80113e+00 987 2004 6 2.92638e+01 1.07486e+00 585 2004 7 2.99318e+01 1.22954e+00 562 2004 8 2.98057e+01 1.47206e+00 603 2004 9 2.73921e+01 1.77846e+00 516 2004 10 2.52059e+01 1.46242e+00 723 2004 11 2.22446e+01 2.08016e+00 563 2004 12 1.59207e+01 2.13056e+00 482 2005 1 1.38127e+01 1.41717e+00 303 2005 2 1.39774e+01 7.46231e-01 294 2005 3 1.63873e+01 1.51551e+00 531 2005 4 2.02183e+01 7.87464e-01 608 2005 5 2.42868e+01 2.11023e+00 742 2005 6 2.82194e+01 1.15818e+00 613 2005 7 2.96822e+01 1.69074e+00 594 2005 8 2.99179e+01 1.55673e+00 688 2005 9 2.81367e+01 1.07154e+00 741 2005 10 2.53840e+01 2.11408e+00 809 2005 11 2.06573e+01 1.55921e+00 616 2005 12 1.53533e+01 1.83072e+00 431 2006 1 1.45714e+01 1.06403e+00 355 2006 2 1.49477e+01 1.01047e+00 387 2006 3 1.79291e+01 1.16402e+00 636 2006 4 2.21689e+01 2.08633e+00 730 2006 5 2.46686e+01 1.35701e+00 837 2006 6 2.80677e+01 1.23457e+00 785 2006 7 2.99402e+01 1.41787e+00 689 2006 8 3.06088e+01 1.02562e+00 758 2006 9 2.87604e+01 1.29769e+00 568 2006 10 2.51299e+01 2.08629e+00 793 2006 11 1.89887e+01 1.82799e+00 577 2006 12 1.60549e+01 1.54832e+00 269 2007 1 1.50366e+01 1.39018e+00 221 2007 2 1.39537e+01 8.76920e-01 314 2007 3 1.77197e+01 1.31920e+00 706 2007 4 2.06865e+01 1.35558e+00 553 2007 5 2.42322e+01 1.13053e+00 893 2007 6 2.72441e+01 1.93061e+00 724 2007 7 3.00963e+01 1.18466e+00 435 2007 8 3.04224e+01 1.51198e+00 754 2007 9 2.88560e+01 1.42977e+00 602 2007 10 2.63890e+01 1.21479e+00 516 2007 11 2.01358e+01 1.40979e+00 762 2007 12 1.78363e+01 1.05803e+00 344 2008 1 1.45085e+01 1.34397e+00 271 2008 2 1.57928e+01 8.64077e-01 416 2008 3 1.73964e+01 1.52801e+00 580 2008 4 2.12544e+01 1.25151e+00 678 2008 5 2.47494e+01 1.85298e+00 724 2008 6 2.87077e+01 1.20360e+00 675 2008 7 2.92793e+01 1.45046e+00 527 2008 8 2.87281e+01 1.33123e+00 397 2008 9 2.77368e+01 1.41579e+00 628 2008 10 2.42355e+01 1.60827e+00 920 2008 11 1.84990e+01 1.55604e+00 612 2008 12 1.56168e+01 7.35226e-01 354 2009 1 1.45556e+01 1.35645e+00 533 2009 2 1.42103e+01 1.00966e+00 520 2009 3 1.76661e+01 1.93486e+00 512 2009 4 2.11897e+01 1.89208e+00 674 2009 5 2.55170e+01 1.20641e+00 642 2009 6 2.75713e+01 1.17112e+00 698 2009 7 2.86276e+01 1.23299e+00 601 2009 8 2.95913e+01 1.37334e+00 574 2009 9 2.83753e+01 9.41758e-01 617 2009 10 2.59136e+01 2.26079e+00 686 2009 11 2.02403e+01 1.17312e+00 432 2009 12 1.56431e+01 1.83002e+00 186 2010 1 1.26283e+01 1.55033e+00 390 2010 2 1.29927e+01 7.84695e-01 398 2010 3 1.51433e+01 1.34720e+00 395 2010 4 2.09313e+01 1.65442e+00 626 2010 5 2.66429e+01 2.43852e+00 811 2010 6 3.03873e+01 1.16557e+00 779 2010 7 2.97239e+01 1.38958e+00 676 2010 8 3.00715e+01 1.38104e+00 322 2010 9 2.92017e+01 1.10815e+00 743 2010 10 2.50139e+01 1.02824e+00 1026 2010 11 2.06929e+01 1.31608e+00 796 2010 12 1.51746e+01 2.60621e+00 690 2011 1 1.16348e+01 8.68689e-01 432 2011 2 1.30298e+01 1.02040e+00 217 2011 3 1.86806e+01 1.36210e+00 568 2011 4 2.29832e+01 1.78087e+00 861 2011 5 2.54537e+01 1.52796e+00 985 2011 6 2.92057e+01 1.62989e+00 688 2011 7 2.99323e+01 1.29649e+00 524 2011 8 3.05657e+01 1.11895e+00 704 2011 9 2.81924e+01 8.96658e-01 715 2011 10 2.42805e+01 1.59391e+00 756 2011 11 1.93260e+01 1.19533e+00 560 2011 12 1.66343e+01 9.96495e-01 336 2012 1 1.55615e+01 8.98389e-01 596 2012 2 1.57041e+01 1.49687e+00 162 2012 3 2.03396e+01 2.28184e+00 726 2012 4 2.31838e+01 9.52704e-01 897 2012 5 2.61695e+01 1.33928e+00 819 2012 6 2.74833e+01 1.01414e+00 599 2012 7 2.94811e+01 1.42669e+00 569 2012 8 2.91301e+01 1.11907e+00 453 2012 9 2.81643e+01 1.15481e+00 587 2012 10 2.52319e+01 1.94685e+00 741 2012 11 1.94722e+01 1.40976e+00 680 2012 12 1.68035e+01 1.84176e+00 370 2013 1 1.51440e+01 1.13708e+00 288 2013 2 1.59876e+01 1.27163e+00 417 2013 3 1.64678e+01 1.17560e+00 630 2013 4 2.03416e+01 1.94912e+00 553 2013 5 2.43126e+01 1.71031e+00 754 2013 6 2.76909e+01 1.82083e+00 590 2013 7 2.87897e+01 1.55959e+00 303 2013 8 3.01197e+01 1.52263e+00 561 2013 9 2.94992e+01 1.68590e+00 758 2013 10 2.56163e+01 1.54022e+00 754 2013 11 2.09806e+01 2.25069e+00 431 2013 12 1.68586e+01 1.45776e+00 320 2014 1 1.32883e+01 1.46520e+00 312 2014 2 1.47719e+01 1.62290e+00 274 2014 3 1.65982e+01 1.20534e+00 466 2014 4 2.04467e+01 1.47053e+00 566 2014 5 2.48585e+01 1.96013e+00 615 2014 6 2.83689e+01 1.69945e+00 669 2014 7 2.92619e+01 1.54651e+00 609 2014 8 2.98361e+01 1.21525e+00 844 2014 9 2.92015e+01 1.14951e+00 364 2014 10 2.55175e+01 1.64428e+00 834 2014 11 1.88119e+01 2.14344e+00 539 2014 12 1.61882e+01 1.05350e+00 415 2015 1 1.43375e+01 1.38454e+00 376 2015 2 1.39212e+01 1.09662e+00 435 2015 3 1.85842e+01 1.90119e+00 409 2015 4 2.29950e+01 2.18799e+00 384 2015 5 2.64121e+01 1.75220e+00 872 2015 6 2.97065e+01 1.19304e+00 600 2015 7 2.96713e+01 1.17030e+00 529 2015 8 3.02496e+01 1.54078e+00 531 2015 9 2.82291e+01 1.50902e+00 325 2015 10 2.43927e+01 1.35956e+00 638 2015 11 2.22556e+01 2.63646e+00 438 2015 12 1.82915e+01 1.16788e+00 301 2016 1 1.54944e+01 1.72820e+00 435 2016 2 1.49040e+01 1.00992e+00 436 2016 3 1.86302e+01 1.65337e+00 383 2016 4 2.19997e+01 1.43413e+00 554 2016 5 2.53668e+01 1.48665e+00 705 2016 6 2.90603e+01 1.13529e+00 725 2016 7 3.10926e+01 1.22583e+00 787 2016 8 3.05499e+01 1.12339e+00 567 2016 9 2.94276e+01 1.11193e+00 661 2016 10 2.60856e+01 1.67039e+00 811 2016 11 2.12963e+01 2.15999e+00 670 2016 12 1.77092e+01 1.18069e+00 416 2017 1 1.65050e+01 1.18765e+00 339 2017 2 1.75670e+01 1.77099e+00 520 2017 3 1.85275e+01 1.61879e+00 706 2017 4 2.29319e+01 1.05152e+00 718 2017 5 2.51770e+01 1.44179e+00 550 2017 6 2.81945e+01 1.49102e+00 448 2017 7 3.03218e+01 1.50688e+00 504 2017 8 3.01129e+01 1.53172e+00 559 2017 9 2.80487e+01 1.47025e+00 584 2017 10 2.55732e+01 1.76229e+00 937 2017 11 2.07636e+01 1.28885e+00 709 2017 12 1.71918e+01 1.81420e+00 411 2018 1 1.18408e+01 1.58059e+00 409 2018 2 1.72826e+01 3.23798e+00 225 2018 3 1.83654e+01 1.52266e+00 720 2018 4 2.09357e+01 1.30466e+00 541 2018 5 2.49606e+01 1.89474e+00 608 2018 6 2.87214e+01 1.81295e+00 560 2018 7 3.04365e+01 1.05194e+00 624 2018 8 3.00277e+01 1.43582e+00 517 2018 9 3.03342e+01 1.10166e+00 906 2018 10 2.73040e+01 2.30178e+00 845 2018 11 2.02207e+01 1.93049e+00 297 2018 12 1.63730e+01 1.59565e+00 278 2019 1 1.55152e+01 1.43173e+00 430 2019 2 1.70366e+01 2.16923e+00 155 2019 3 1.84405e+01 1.28401e+00 536 2019 4 2.18575e+01 1.79855e+00 541 2019 5 2.69559e+01 1.91710e+00 928 2019 6 2.94633e+01 1.17718e+00 459 2019 7 3.00009e+01 1.16765e+00 426 2019 8 3.01995e+01 1.18718e+00 512 2019 9 2.93471e+01 8.76819e-01 958 2019 10 2.71639e+01 1.73003e+00 642 2019 11 1.90828e+01 2.57057e+00 584 2019 12 1.66095e+01 1.01242e+00 416 2020 1 1.60723e+01 9.51635e-01 487 2020 2 1.53596e+01 9.53903e-01 409 2020 3 2.02112e+01 3.38488e+00 621 2020 4 2.33742e+01 9.21038e-01 434 2020 5 2.45591e+01 1.05342e+00 636 2020 6 2.88786e+01 1.23318e+00 579 2020 7 2.96045e+01 1.19822e+00 576 2020 8 3.09968e+01 1.08630e+00 398 2020 9 2.90073e+01 2.05079e+00 404 2020 10 2.54104e+01 8.64626e-01 686 2020 11 2.22843e+01 1.48208e+00 762 2020 12 1.63863e+01 1.61854e+00 761 2021 1 1.44782e+01 9.76746e-01 462 2021 2 1.55146e+01 1.39703e+00 453 2021 3 1.80026e+01 9.90556e-01 547 2021 4 2.12411e+01 1.19588e+00 625 2021 5 2.52051e+01 1.41480e+00 693 2021 6 2.75377e+01 1.26442e+00 407 2021 7 2.93325e+01 1.04214e+00 412 2021 8 3.04528e+01 1.39821e+00 404 2021 9 2.85007e+01 9.90801e-01 476 2021 10 2.61461e+01 1.52539e+00 627 2021 11 2.00531e+01 1.45288e+00 747 2021 12 1.79692e+01 7.38194e-01 571 2022 1 1.65285e+01 2.08397e+00 624 2022 2 1.49559e+01 1.88009e+00 512 2022 3 1.89668e+01 1.15274e+00 671 2022 4 2.27019e+01 1.17392e+00 527 2022 5 2.63036e+01 1.34884e+00 783 2022 6 2.96307e+01 1.53036e+00 662 2022 7 3.04349e+01 1.18301e+00 516 2022 8 3.11141e+01 1.07394e+00 435 2022 9 2.87356e+01 1.89855e+00 478 2022 10 2.39526e+01 1.28098e+00 925 2022 11 2.11168e+01 2.19185e+00 447 2022 12 1.74910e+01 2.10282e+00 790 2023 1 1.48673e+01 7.01592e-01 647 2023 2 1.67954e+01 1.44683e+00 478 2023 3 2.02430e+01 1.53792e+00 648 2023 4 2.24411e+01 6.97722e-01 540 2023 5 2.53489e+01 1.45556e+00 630 2023 6 2.73396e+01 1.56203e+00 611 2023 7 3.01343e+01 1.09425e+00 537 2023 8 3.13026e+01 1.00210e+00 711 2023 9 2.97880e+01 1.15556e+00 668 2023 10 2.45391e+01 1.31261e+00 727 2023 11 2.07870e+01 1.55827e+00 545 2023 12 1.53078e+01 1.45887e+00 304 2024 1 1.37818e+01 7.76230e-01 302 2024 2 1.49246e+01 1.10336e+00 482 2024 3 1.91019e+01 1.28473e+00 463 2024 4 2.04686e+01 3.45664e-01 47