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 2.43380e+01 1.81750e+00 390 2002 8 2.49784e+01 2.91810e+00 180 2002 9 2.29532e+01 5.12954e+00 268 2002 10 1.08646e+01 2.33211e+00 809 2002 11 4.85786e+00 2.47885e+00 429 2002 12 2.86973e+00 1.24987e+00 307 2003 1 5.57390e+00 1.35450e+00 512 2003 2 7.79463e+00 2.71411e+00 761 2003 3 1.59753e+01 3.91917e+00 374 2003 4 1.35251e+01 4.31541e+00 512 2003 5 2.47952e+01 3.11144e+00 414 2003 6 2.32798e+01 1.81954e+00 222 2003 7 2.51665e+01 4.07393e+00 142 2003 8 2.41457e+01 3.93265e+00 386 2003 9 1.87947e+01 1.81058e+00 188 2003 10 1.65472e+01 3.93310e+00 609 2003 11 1.35670e+01 4.46199e+00 896 2003 12 1.76484e+00 1.68769e+00 424 2004 1 6.10737e+00 1.82860e+00 657 2004 2 9.42278e+00 3.05235e+00 610 2004 3 1.37544e+01 3.80242e+00 832 2004 4 1.74105e+01 5.02699e+00 482 2004 5 1.93284e+01 6.06892e+00 640 2004 6 2.79449e+01 4.31450e+00 448 2004 7 3.15578e+01 4.03785e+00 195 2004 8 1.82815e+01 2.60374e+00 555 2004 9 1.55775e+01 2.43128e+00 409 2004 10 9.72039e+00 2.23518e+00 944 2004 11 7.92712e+00 2.87277e+00 708 2004 12 8.10684e+00 5.38690e+00 550 2005 1 4.83891e+00 1.82710e+00 768 2005 2 9.47176e+00 2.41442e+00 844 2005 3 1.17505e+01 3.54148e+00 508 2005 4 1.40609e+01 2.82204e+00 475 2005 5 1.97540e+01 1.94781e+00 346 2005 6 2.49297e+01 1.35167e+00 232 2005 7 1.72767e+01 4.14956e+00 721 2005 8 1.77508e+01 3.44995e+00 402 2005 9 1.35363e+01 5.80534e+00 665 2005 10 1.86322e+01 3.57748e+00 308 2005 11 1.99665e+00 7.30632e-01 355 2005 12 2.99112e+00 1.70548e+00 472 2006 1 6.79593e+00 4.52849e+00 471 2006 2 1.03541e+01 6.69747e+00 704 2006 3 2.08305e+01 3.43104e+00 925 2006 4 2.69377e+01 2.34807e+00 708 2006 5 2.92372e+01 5.19033e+00 617 2006 6 2.67356e+01 2.79409e+00 460 2006 7 2.65835e+01 2.43475e+00 318 2006 8 2.58300e+01 3.45797e+00 442 2006 9 2.32524e+01 3.70207e+00 414 2006 10 1.00458e+01 3.27915e+00 560 2006 11 6.11202e+00 2.28392e+00 432 2006 12 9.02672e+00 3.18537e+00 542 2007 1 1.12953e+01 4.06426e+00 670 2007 2 9.45694e+00 1.55430e+00 494 2007 3 1.65938e+01 4.06637e+00 825 2007 4 1.64607e+01 5.44703e+00 896 2007 5 2.18523e+01 3.95532e+00 600 2007 6 2.14581e+01 3.56255e+00 336 2007 7 2.54716e+01 1.86321e+00 640 2007 8 2.15815e+01 2.02170e+00 538 2007 9 2.28110e+01 3.27261e+00 144 2007 10 1.18640e+01 4.60278e+00 456 2007 11 6.30909e+00 4.65021e+00 549 2007 12 1.12804e+01 5.04283e+00 912 2008 1 8.06158e+00 3.66294e+00 366 2008 2 1.18707e+01 3.80180e+00 701 2008 3 1.64010e+01 7.70649e+00 640 2008 4 2.50775e+01 3.12553e+00 817 2008 5 2.73173e+01 2.09226e+00 297 2008 6 2.63319e+01 3.62370e+00 534 2008 7 2.29152e+01 4.20248e+00 388 2008 8 1.93250e+01 7.73100e+00 150 2008 9 8.29213e+00 6.54026e+00 390 2008 10 6.92735e+00 3.24428e+00 395 2008 11 6.21903e+00 2.28994e+00 838 2008 12 6.80754e+00 2.98593e+00 634 2009 1 6.62481e+00 2.23774e+00 609 2009 2 9.04835e+00 3.56281e+00 784 2009 3 1.07121e+01 7.70136e+00 704 2009 4 2.72130e+01 2.78151e+00 490 2009 5 2.54258e+01 3.79689e+00 456 2009 6 2.70483e+01 2.12325e+00 348 2009 7 2.55264e+01 8.67936e+00 309 2009 8 2.35874e+01 4.17465e+00 577 2009 9 2.11369e+01 3.57228e+00 442 2009 10 1.52942e+01 3.85943e+00 734 2009 11 4.59037e+00 4.51162e+00 381 2009 12 4.96034e+00 2.70634e+00 545 2010 1 9.99117e+00 4.10209e+00 165 2010 2 6.60055e+00 3.49629e+00 250 2010 3 1.07476e+01 3.44963e+00 576 2010 4 1.46664e+01 5.10763e+00 384 2010 5 2.74419e+01 5.43217e+00 501 2010 6 2.51471e+01 2.38477e+00 610 2010 7 2.14308e+01 1.95900e+00 279 2010 8 2.19040e+01 2.31127e+00 531 2010 9 2.00449e+01 5.73677e+00 291 2010 10 1.22548e+01 4.48110e+00 986 2010 11 4.04709e+00 1.28205e+00 810 2010 12 4.73802e+00 2.13115e+00 117 2011 1 3.39871e+00 1.10249e+00 321 2011 2 6.26972e+00 3.12199e+00 1097 2011 3 1.61591e+01 3.74549e+00 894 2011 4 2.31921e+01 2.59301e+00 703 2011 5 2.55992e+01 3.34570e+00 764 2011 6 2.85718e+01 1.55313e+00 405 2011 7 3.04068e+01 2.09894e+00 655 2011 8 2.74091e+01 3.63755e+00 540 2011 9 1.79473e+01 2.27994e+00 332 2011 10 6.89870e+00 4.75524e+00 198 2011 11 6.80287e+00 4.06632e+00 769 2011 12 5.53031e+00 2.89254e+00 1030 2012 1 6.33935e+00 3.11527e+00 894 2012 2 1.75861e+01 5.91773e+00 662 2012 3 2.04833e+01 6.11363e+00 891 2012 4 2.64666e+01 4.22999e+00 755 2012 5 2.19104e+01 4.54343e+00 576 2012 6 2.71432e+01 2.52698e+00 320 2012 7 2.81844e+01 2.33960e+00 240 2012 8 2.78246e+01 3.61695e+00 381 2012 9 2.44847e+01 1.49548e+00 448 2012 10 2.09657e+01 5.45161e+00 554 2012 11 6.48363e+00 1.43421e+00 811 2012 12 5.53950e+00 4.06854e+00 592 2013 1 9.75061e+00 6.15609e+00 685 2013 2 6.39438e+00 2.95599e+00 467 2013 3 1.16652e+01 5.33532e+00 576 2013 4 2.04158e+01 2.97555e+00 640 2013 5 2.12215e+01 1.85048e+00 502 2013 6 1.77862e+01 4.50989e+00 384 2013 7 2.14111e+01 2.09489e+00 386 2013 8 1.76941e+01 6.03340e+00 445 2013 9 1.05323e+01 1.58963e+00 193 2013 10 1.84284e+01 4.40141e+00 673 2013 11 7.03821e+00 3.38799e+00 483 2013 12 2.15821e+00 8.44983e-01 689 2014 1 2.09133e+00 8.27802e-01 418 2014 2 7.41078e+00 2.75852e+00 842 2014 3 1.15193e+01 2.44043e+00 619 2014 4 1.92204e+01 3.29723e+00 576 2014 5 2.25707e+01 3.51709e+00 710 2014 6 2.36389e+01 3.51929e+00 300 2014 7 2.04313e+01 9.94336e-01 215 2014 8 2.56471e+01 6.09909e+00 498 2014 9 1.78554e+01 4.97122e+00 177 2014 10 1.49749e+01 2.43220e+00 836 2014 11 6.68239e+00 3.45519e+00 738 2014 12 5.46238e+00 1.81979e+00 830 2015 1 6.90555e+00 4.17953e+00 559 2015 2 6.31727e+00 1.12407e+00 562 2015 3 1.66761e+01 4.91995e+00 787 2015 4 2.27665e+01 2.42826e+00 516 2015 5 2.33153e+01 1.64787e+00 763 2015 6 2.45402e+01 2.53869e+00 375 2015 7 2.69929e+01 2.01966e+00 205 2015 8 2.22752e+01 3.54024e+00 527 2015 9 1.41944e+01 2.89005e+00 304 2015 10 1.56141e+01 3.31163e+00 690 2015 11 1.03518e+01 4.51755e+00 654 2015 12 9.03590e+00 3.33905e+00 562 2016 1 6.57836e+00 4.88625e+00 199 2016 2 4.97125e+00 2.11985e+00 402 2016 3 1.42080e+01 5.38328e+00 397 2016 4 1.90257e+01 2.72159e+00 512 2016 5 1.56121e+01 5.36092e+00 540 2016 6 2.59131e+01 4.10552e+00 383 2016 7 2.80015e+01 2.82440e+00 662 2016 8 2.29041e+01 3.85832e+00 515 2016 9 1.78887e+01 3.62879e+00 793 2016 10 6.30838e+00 4.42415e+00 962 2016 11 7.03978e+00 2.46187e+00 1073 2016 12 7.90874e+00 2.12751e+00 996 2017 1 7.13534e+00 3.93060e+00 718 2017 2 1.25836e+01 5.68867e+00 881 2017 3 1.74767e+01 5.82053e+00 872 2017 4 2.00029e+01 1.45364e+00 384 2017 5 2.56734e+01 2.13364e+00 635 2017 6 2.65426e+01 3.30526e+00 132 2017 7 2.77084e+01 3.00874e+00 326 2017 8 2.31810e+01 4.32536e+00 406 2017 9 9.29208e+00 5.66870e+00 354 2017 10 9.90179e+00 4.76559e+00 357 2017 11 6.56986e+00 3.38259e+00 971 2017 12 3.81778e+00 2.82648e+00 1054 2018 1 4.80082e+00 2.71149e+00 738 2018 2 1.50524e+01 3.06309e+00 999 2018 3 1.80038e+01 3.73548e+00 1001 2018 4 2.33328e+01 3.79382e+00 832 2018 5 2.48359e+01 3.69275e+00 384 2018 6 2.90608e+01 2.20298e+00 383 2018 7 2.53363e+01 5.34300e+00 552 2018 8 1.74602e+01 1.39227e+00 358 2018 9 1.23315e+01 5.21345e+00 416 2018 10 1.48801e+01 4.81447e+00 844 2018 11 1.67950e+01 4.22571e+00 444 2018 12 3.38945e+00 2.96107e+00 184 2019 1 6.41498e+00 3.12125e+00 442 2019 2 8.98073e+00 2.40118e+00 832 2019 3 1.99450e+01 3.13937e+00 707 2019 4 2.17153e+01 3.95497e+00 404 2019 5 2.75172e+01 3.23537e+00 750 2019 6 1.34445e+01 6.19504e+00 768 2019 7 2.06704e+01 2.93518e+00 576 2019 8 2.05851e+01 2.31210e+00 320 2019 9 1.68971e+01 3.86599e+00 541 2019 10 9.79203e+00 2.94523e+00 570 2019 11 6.58098e+00 1.58386e+00 468 2019 12 6.57825e+00 1.65830e+00 559 2020 1 4.52836e+00 2.12194e+00 902 2020 2 1.42650e+01 4.83992e+00 636 2020 3 1.71576e+01 4.93685e+00 1088 2020 4 2.28037e+01 2.96221e+00 334 2020 5 2.18964e+01 1.89453e+00 320 2020 6 2.05159e+01 1.85787e+00 458 2020 7 2.39209e+01 2.58404e+00 247 2020 8 2.45460e+01 3.44090e+00 526 2020 9 1.66309e+01 4.30089e+00 265 2020 10 1.59499e+01 6.71531e+00 299 2020 11 4.41472e+00 2.64882e+00 729 2020 12 4.22944e+00 2.61366e+00 555 2021 1 7.89829e+00 2.90035e+00 925 2021 2 1.43494e+01 5.54215e+00 836 2021 3 1.82104e+01 6.16165e+00 1022 2021 4 2.11606e+01 2.19105e+00 640 2021 5 2.78359e+01 3.03415e+00 317 2021 6 2.50735e+01 1.66633e+00 256 2021 7 2.65706e+01 3.51383e+00 455 2021 8 2.85418e+01 4.32821e+00 502 2021 9 1.97859e+01 2.73993e+00 585 2021 10 1.89708e+01 2.80027e+00 505 2021 11 2.89328e+00 2.62358e+00 662 2021 12 1.16079e+01 4.12916e+00 834 2022 1 1.05691e+01 4.16385e+00 566 2022 2 7.79283e+00 3.07676e+00 835 2022 3 1.95472e+01 6.80735e+00 849 2022 4 2.07032e+01 5.89154e+00 256 2022 5 2.43053e+01 4.82469e+00 514 2022 6 2.63435e+01 3.88348e+00 585 2022 7 2.83005e+01 4.56828e+00 272 2022 8 2.19311e+01 3.03959e+00 175 2022 9 2.18773e+01 7.20855e+00 166 2022 10 2.80137e+00 1.58611e+00 564 2022 11 2.62446e+00 1.46790e+00 641 2022 12 1.38933e+00 7.95104e-01 785 2023 1 7.59888e+00 5.08966e+00 922 2023 2 1.38622e+01 4.42161e+00 1188 2023 3 2.19405e+01 3.31882e+00 1007 2023 4 3.00405e+01 2.21319e+00 320 2023 5 2.85434e+01 4.01314e+00 692 2023 6 2.60078e+01 4.76297e+00 305 2023 7 2.76122e+01 1.03938e+01 384 2023 8 2.20263e+01 8.15600e+00 482 2023 9 1.09463e+01 3.66954e+00 585 2023 10 8.55404e+00 2.47983e+00 497 2023 11 7.28871e+00 1.86897e+00 639 2023 12 7.93953e+00 2.87044e+00 450 2024 1 1.40493e+01 5.18808e+00 317 2024 2 1.22575e+01 5.88389e+00 963 2024 3 2.16331e+01 4.00590e+00 623 2024 4 nan nan 0