YEAR MONTH MEAN STDEV COUNT 2002 1 nan nan 0 2002 2 nan nan 0 2002 3 nan nan 0 2002 4 nan nan 0 2002 5 nan nan 0 2002 6 nan nan 0 2002 7 6.31632e+01 8.15521e-01 393 2002 8 5.40313e+01 3.08712e+00 611 2002 9 4.48696e+01 3.62006e+00 707 2002 10 3.15010e+01 3.23020e+00 322 2002 11 2.23829e+01 1.76917e-01 128 2002 12 1.51642e+01 2.16441e-02 64 2003 1 1.84337e+01 2.32596e-02 37 2003 2 2.62222e+01 2.61893e+00 128 2003 3 4.18846e+01 1.99818e+00 258 2003 4 5.28933e+01 2.90861e+00 481 2003 5 5.95878e+01 2.03726e+00 225 2003 6 6.48763e+01 1.30514e-01 342 2003 7 6.26391e+01 1.64174e+00 775 2003 8 5.41210e+01 2.09387e+00 902 2003 9 4.33951e+01 2.86753e+00 712 2003 10 3.17076e+01 3.22873e+00 554 2003 11 2.03337e+01 1.77751e+00 448 2003 12 1.54536e+01 4.05253e-01 338 2004 1 1.71657e+01 4.59374e-02 46 2004 2 2.95412e+01 2.41691e+00 435 2004 3 4.19896e+01 3.08450e+00 279 2004 4 5.26848e+01 3.40170e+00 520 2004 5 6.10760e+01 1.73122e+00 554 2004 6 6.45206e+01 4.46426e-01 501 2004 7 6.26479e+01 1.50648e+00 460 2004 8 5.52191e+01 3.04520e+00 552 2004 9 4.27410e+01 3.26333e+00 902 2004 10 3.34411e+01 3.22492e+00 329 2004 11 2.07411e+01 1.66207e+00 350 2004 12 1.51292e+01 3.12210e-02 72 2005 1 2.07322e+01 1.03387e+00 154 2005 2 2.19953e+01 2.51179e-02 52 2005 3 3.97464e+01 1.66641e+00 334 2005 4 5.22648e+01 1.80489e+00 768 2005 5 6.07690e+01 1.98920e+00 703 2005 6 6.45548e+01 4.32677e-01 565 2005 7 6.17983e+01 1.53009e+00 674 2005 8 5.49782e+01 2.46522e+00 680 2005 9 4.41914e+01 3.61446e+00 999 2005 10 3.28423e+01 4.35251e+00 359 2005 11 2.22378e+01 2.04224e+00 255 2005 12 1.51810e+01 9.99928e-04 2 2006 1 1.90058e+01 1.78383e+00 312 2006 2 3.14414e+01 4.56751e-02 64 2006 3 3.96279e+01 4.18234e+00 630 2006 4 5.17889e+01 3.47561e+00 967 2006 5 5.97093e+01 1.63488e+00 443 2006 6 6.45061e+01 2.57454e-01 460 2006 7 6.18378e+01 1.27211e+00 458 2006 8 5.54397e+01 2.80705e+00 1009 2006 9 4.12358e+01 2.90852e+00 319 2006 10 3.37678e+01 2.88689e+00 383 2006 11 1.93044e+01 1.73147e+00 181 2006 12 1.51091e+01 1.33982e-01 216 2007 1 1.56725e+01 4.63114e-02 4 2007 2 3.12884e+01 5.93938e-01 96 2007 3 4.21931e+01 3.20554e+00 384 2007 4 5.36828e+01 2.01044e+00 450 2007 5 5.98761e+01 2.16600e+00 651 2007 6 6.47153e+01 1.52216e-01 697 2007 7 6.19013e+01 1.56592e+00 615 2007 8 5.47160e+01 3.33368e+00 741 2007 9 4.39056e+01 3.53306e+00 930 2007 10 2.93972e+01 3.42484e+00 345 2007 11 2.29166e+01 1.55661e+00 209 2007 12 1.58821e+01 7.58480e-01 126 2008 1 1.54301e+01 2.98829e-01 65 2008 2 3.01341e+01 2.32629e-01 89 2008 3 4.10493e+01 3.14285e+00 280 2008 4 5.22427e+01 3.07668e+00 815 2008 5 6.15417e+01 1.74537e+00 396 2008 6 6.45287e+01 2.41016e-01 403 2008 7 6.26306e+01 1.57859e+00 555 2008 8 5.36653e+01 2.80847e+00 625 2008 9 4.41495e+01 3.36456e+00 786 2008 10 3.15440e+01 3.21195e+00 547 2008 11 2.29882e+01 1.20663e+00 368 2008 12 1.54679e+01 1.10187e-02 14 2009 1 1.63960e+01 6.21347e-01 183 2009 2 2.58295e+01 1.86855e+00 272 2009 3 4.00255e+01 3.05957e+00 614 2009 4 5.19377e+01 3.17135e+00 673 2009 5 6.09808e+01 1.52250e+00 601 2009 6 6.46194e+01 2.76294e-01 385 2009 7 6.26880e+01 9.04366e-01 293 2009 8 5.53942e+01 2.58040e+00 842 2009 9 4.59044e+01 3.23938e+00 557 2009 10 3.04298e+01 2.74150e+00 317 2009 11 2.09273e+01 2.03568e+00 280 2009 12 1.48572e+01 1.19347e-02 16 2010 1 1.86370e+01 1.63392e+00 147 2010 2 2.89049e+01 3.17585e+00 133 2010 3 3.94172e+01 3.88846e+00 437 2010 4 5.17251e+01 2.62559e+00 707 2010 5 6.18310e+01 1.76027e+00 629 2010 6 6.44471e+01 3.68831e-01 586 2010 7 6.22182e+01 1.53690e+00 1037 2010 8 5.40403e+01 2.74250e+00 685 2010 9 4.37507e+01 3.10296e+00 558 2010 10 3.11366e+01 2.54031e+00 573 2010 11 2.06548e+01 1.94019e+00 448 2010 12 nan nan 0 2011 1 nan nan 0 2011 2 2.88404e+01 1.21022e+00 271 2011 3 4.11083e+01 3.93822e+00 555 2011 4 5.10555e+01 3.44357e+00 320 2011 5 5.96477e+01 1.53848e+00 339 2011 6 6.46163e+01 3.67932e-01 467 2011 7 6.24630e+01 1.48765e+00 866 2011 8 5.50211e+01 2.81365e+00 620 2011 9 4.43467e+01 3.02637e+00 700 2011 10 3.32144e+01 2.69936e+00 459 2011 11 2.25751e+01 1.69014e+00 336 2011 12 1.54377e+01 1.06135e-01 70 2012 1 1.69483e+01 6.26694e-01 134 2012 2 2.58524e+01 2.65552e+00 205 2012 3 4.00381e+01 2.74791e+00 415 2012 4 5.14264e+01 2.95728e+00 509 2012 5 6.14408e+01 1.46953e+00 528 2012 6 6.45342e+01 3.18713e-01 788 2012 7 6.18278e+01 1.76113e+00 874 2012 8 5.38898e+01 3.00483e+00 1114 2012 9 4.39069e+01 3.93424e+00 770 2012 10 3.24133e+01 3.92787e+00 279 2012 11 2.00111e+01 1.23544e+00 299 2012 12 1.52366e+01 4.50244e-02 169 2013 1 1.90484e+01 2.41876e+00 97 2013 2 2.45308e+01 6.77296e-01 157 2013 3 3.97728e+01 3.92665e+00 460 2013 4 5.22948e+01 2.84860e+00 531 2013 5 5.98573e+01 2.36977e+00 711 2013 6 6.44442e+01 3.19609e-01 555 2013 7 6.19785e+01 1.06510e+00 584 2013 8 5.55619e+01 2.08890e+00 875 2013 9 4.16832e+01 3.08367e+00 686 2013 10 3.25561e+01 3.66828e+00 506 2013 11 1.83647e+01 1.45819e+00 128 2013 12 nan nan 0 2014 1 1.79674e+01 5.02500e-02 32 2014 2 2.76041e+01 1.62227e+00 192 2014 3 4.04172e+01 3.63352e+00 231 2014 4 5.19750e+01 3.19317e+00 516 2014 5 6.05379e+01 2.13788e+00 371 2014 6 6.46004e+01 2.38457e-01 388 2014 7 6.29394e+01 1.09145e+00 497 2014 8 5.45703e+01 2.76274e+00 697 2014 9 4.28165e+01 3.50758e+00 994 2014 10 3.16777e+01 3.18131e+00 445 2014 11 2.09288e+01 2.55589e+00 185 2014 12 1.57728e+01 2.51110e-01 71 2015 1 1.89582e+01 1.17490e+00 349 2015 2 nan nan 0 2015 3 4.04986e+01 3.10324e+00 539 2015 4 5.21187e+01 3.35338e+00 725 2015 5 6.08418e+01 1.74331e+00 588 2015 6 6.44690e+01 3.14481e-01 489 2015 7 6.13186e+01 1.41510e+00 800 2015 8 5.54179e+01 2.58527e+00 915 2015 9 4.39470e+01 2.64885e+00 766 2015 10 3.09272e+01 2.49986e+00 591 2015 11 2.13679e+01 2.44705e+00 614 2015 12 1.53946e+01 1.23044e-01 166 2016 1 1.79255e+01 1.41675e+00 163 2016 2 2.70462e+01 2.35871e+00 185 2016 3 4.05491e+01 4.47013e+00 278 2016 4 5.18049e+01 2.37608e+00 484 2016 5 6.11915e+01 1.75067e+00 538 2016 6 6.46500e+01 2.50033e-01 501 2016 7 6.21753e+01 1.68365e+00 698 2016 8 5.43497e+01 3.38078e+00 1055 2016 9 4.48171e+01 3.54972e+00 804 2016 10 3.29654e+01 1.95137e+00 538 2016 11 2.09277e+01 1.17033e+00 423 2016 12 1.58912e+01 4.30070e-01 83 2017 1 1.56542e+01 4.66576e-02 49 2017 2 2.89651e+01 6.87191e-01 232 2017 3 4.02435e+01 2.07766e+00 446 2017 4 5.41660e+01 1.62338e+00 316 2017 5 6.22262e+01 9.56369e-01 257 2017 6 6.44664e+01 3.45942e-01 487 2017 7 6.19570e+01 1.94084e+00 545 2017 8 5.46209e+01 3.03050e+00 744 2017 9 4.22518e+01 2.28490e+00 598 2017 10 3.19657e+01 3.52521e+00 448 2017 11 1.81933e+01 9.79346e-01 325 2017 12 1.49457e+01 8.26715e-02 112 2018 1 2.08937e+01 4.20569e-02 56 2018 2 2.93157e+01 2.30075e+00 256 2018 3 4.07088e+01 2.78882e+00 598 2018 4 5.28935e+01 3.29868e+00 442 2018 5 6.09319e+01 1.69094e+00 520 2018 6 6.45272e+01 2.67936e-01 422 2018 7 6.27794e+01 1.39351e+00 1016 2018 8 5.52730e+01 2.70699e+00 548 2018 9 4.42552e+01 3.71577e+00 796 2018 10 2.95287e+01 3.34649e+00 222 2018 11 1.82690e+01 5.33890e-02 64 2018 12 1.50902e+01 1.75577e-01 69 2019 1 nan nan 0 2019 2 2.37891e+01 1.47887e+00 99 2019 3 4.14657e+01 2.98608e+00 408 2019 4 5.02558e+01 3.75144e+00 379 2019 5 6.10695e+01 1.72460e+00 192 2019 6 6.44796e+01 2.84321e-01 677 2019 7 6.28220e+01 1.48656e+00 519 2019 8 5.50598e+01 3.26388e+00 832 2019 9 4.47709e+01 3.10527e+00 663 2019 10 3.14895e+01 2.62678e+00 467 2019 11 1.96639e+01 5.18966e-02 64 2019 12 1.49394e+01 2.08438e-02 64 2020 1 1.86570e+01 4.32664e-02 64 2020 2 2.72866e+01 2.75306e+00 220 2020 3 3.81336e+01 3.81493e+00 496 2020 4 5.15789e+01 2.73891e+00 640 2020 5 6.17976e+01 1.63430e+00 545 2020 6 6.46315e+01 1.42960e-01 865 2020 7 6.15555e+01 1.83193e+00 684 2020 8 5.74776e+01 9.25081e-01 341 2020 9 4.17562e+01 2.37944e+00 317 2020 10 3.24439e+01 3.98258e+00 380 2020 11 2.06485e+01 2.37253e+00 256 2020 12 1.51897e+01 2.32922e-02 64 2021 1 1.86033e+01 5.46268e-01 58 2021 2 3.11373e+01 1.97924e+00 68 2021 3 3.90098e+01 3.97139e+00 756 2021 4 5.12863e+01 3.50885e+00 527 2021 5 6.12722e+01 1.65331e+00 575 2021 6 6.45492e+01 3.77616e-01 596 2021 7 6.10952e+01 1.34606e+00 439 2021 8 5.55689e+01 3.44156e+00 408 2021 9 4.41227e+01 3.25299e+00 739 2021 10 3.11890e+01 3.38519e+00 243 2021 11 2.16001e+01 1.64856e+00 220 2021 12 1.53056e+01 2.05422e-02 64 2022 1 1.82608e+01 1.63071e+00 312 2022 2 2.46061e+01 1.59257e+00 192 2022 3 3.84580e+01 4.25921e+00 458 2022 4 5.52231e+01 1.66673e+00 375 2022 5 6.11700e+01 1.97168e+00 443 2022 6 6.46219e+01 2.35561e-01 615 2022 7 6.22352e+01 1.33640e+00 692 2022 8 5.39232e+01 2.52425e+00 561 2022 9 4.57426e+01 4.04950e+00 390 2022 10 2.99518e+01 3.50088e+00 657 2022 11 2.25939e+01 6.90453e-01 298 2022 12 1.54382e+01 2.69086e-01 94 2023 1 1.60909e+01 4.00299e-02 64 2023 2 2.66458e+01 1.84425e+00 266 2023 3 4.33575e+01 1.48007e+00 229 2023 4 5.14897e+01 2.73951e+00 840 2023 5 6.15971e+01 2.32585e+00 529 2023 6 6.43682e+01 4.25935e-01 321 2023 7 6.19805e+01 1.62063e+00 627 2023 8 5.42194e+01 2.92485e+00 879 2023 9 4.40737e+01 3.72676e+00 904 2023 10 3.33148e+01 3.66149e+00 576 2023 11 2.16501e+01 1.83031e+00 107 2023 12 1.50634e+01 1.30576e-01 79 2024 1 1.56660e+01 1.21533e-01 81 2024 2 2.82738e+01 3.16076e+00 497 2024 3 3.96295e+01 4.19620e+00 597 2024 4 4.62837e+01 6.34328e-02 64