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 2.28966e+01 3.04219e+00 254 2002 8 1.88255e+01 5.10128e+00 256 2002 9 1.19902e+01 3.31344e+00 320 2002 10 1.45316e+01 2.06021e+00 373 2002 11 1.77917e+01 3.31313e+00 840 2002 12 1.99264e+01 3.59571e+00 699 2003 1 2.25331e+01 2.08917e+00 951 2003 2 2.36965e+01 3.95426e+00 484 2003 3 2.37224e+01 4.76702e+00 919 2003 4 2.38974e+01 8.75932e-01 175 2003 5 3.54572e+01 7.33062e+00 256 2003 6 8.85811e+00 3.74952e-01 50 2003 7 2.54374e+01 2.87097e+00 192 2003 8 2.43607e+01 4.77287e+00 154 2003 9 2.46789e+01 4.56250e+00 291 2003 10 2.32004e+01 3.44378e+00 588 2003 11 1.21140e+01 4.79419e+00 208 2003 12 1.99490e+01 3.63539e+00 500 2004 1 2.14245e+01 4.96190e+00 882 2004 2 2.13945e+01 2.36126e+00 660 2004 3 2.87380e+01 4.82845e+00 484 2004 4 2.34106e+01 7.08976e+00 747 2004 5 2.72143e+01 1.85278e+00 65 2004 6 2.51792e+01 4.08595e+00 185 2004 7 1.99145e+01 2.10058e+00 78 2004 8 2.13292e+01 7.72322e+00 220 2004 9 1.17124e+01 2.03684e+00 192 2004 10 1.29924e+01 4.99361e+00 359 2004 11 2.01191e+01 4.36267e+00 503 2004 12 1.68630e+01 2.66862e+00 591 2005 1 1.99475e+01 3.54788e+00 551 2005 2 1.81144e+01 1.18245e+01 695 2005 3 2.54572e+01 6.88760e+00 831 2005 4 2.88875e+01 4.47669e+00 423 2005 5 2.24478e+01 4.97520e+00 244 2005 6 1.72282e+01 3.78552e-01 64 2005 7 1.34493e+01 1.03199e+00 192 2005 8 1.85488e+01 2.77990e+00 186 2005 9 2.26783e+01 6.05215e+00 460 2005 10 2.76447e+01 4.46080e+00 90 2005 11 1.56215e+01 4.79243e+00 556 2005 12 1.85643e+01 7.19966e+00 654 2006 1 2.10572e+01 5.86971e+00 669 2006 2 2.41248e+01 3.26130e+00 905 2006 3 2.25832e+01 2.72026e+00 522 2006 4 2.03399e+01 4.54979e+00 415 2006 5 2.46967e+01 6.67237e+00 428 2006 6 3.40428e+01 7.33245e+00 128 2006 7 1.60552e+01 4.29293e+00 291 2006 8 2.37912e+01 1.79874e+00 244 2006 9 1.63869e+01 3.35598e+00 447 2006 10 2.34382e+01 1.92207e+00 436 2006 11 2.19499e+01 5.04288e+00 512 2006 12 1.90981e+01 2.86718e+00 537 2007 1 2.02316e+01 6.11719e+00 841 2007 2 2.56030e+01 5.26722e+00 854 2007 3 3.20026e+01 6.23674e+00 378 2007 4 2.49336e+01 5.14861e+00 400 2007 5 2.34235e+01 1.05721e+00 152 2007 6 1.76205e+01 2.32343e+00 127 2007 7 1.71037e+01 3.90788e+00 192 2007 8 2.31575e+01 7.08508e+00 128 2007 9 1.93627e+01 5.13014e+00 200 2007 10 2.67399e+01 5.62156e+00 396 2007 11 2.27594e+01 4.67273e+00 351 2007 12 1.79189e+01 4.48219e+00 563 2008 1 1.65446e+01 4.69826e+00 946 2008 2 2.59985e+01 2.03251e+00 612 2008 3 2.52667e+01 5.34697e+00 527 2008 4 2.57310e+01 3.58250e+00 306 2008 5 2.61754e+01 4.27988e+00 436 2008 6 1.72510e+01 3.64715e+00 192 2008 7 2.43057e+01 2.02463e+00 193 2008 8 2.06657e+01 3.97096e+00 215 2008 9 1.74979e+01 5.62017e+00 250 2008 10 2.51306e+01 4.85108e+00 452 2008 11 2.11932e+01 2.65014e+00 653 2008 12 2.01218e+01 5.92487e+00 532 2009 1 2.32034e+01 5.06904e+00 745 2009 2 2.31172e+01 4.93991e+00 562 2009 3 2.33296e+01 5.51232e+00 383 2009 4 1.33362e+01 1.07380e+01 554 2009 5 9.41321e+00 5.26449e+00 316 2009 6 1.16481e+01 4.82007e-01 80 2009 7 2.38609e+01 5.00840e+00 366 2009 8 2.67681e+01 2.24718e+00 284 2009 9 1.63296e+01 3.46770e+00 439 2009 10 2.16238e+01 3.72828e+00 573 2009 11 2.27844e+01 3.31621e+00 559 2009 12 1.96553e+01 4.71842e+00 635 2010 1 1.51208e+01 6.32567e+00 582 2010 2 2.34232e+01 6.17255e+00 529 2010 3 2.76105e+01 6.28077e+00 544 2010 4 2.13213e+01 6.55876e+00 257 2010 5 2.19028e+01 6.52979e-01 212 2010 6 2.54479e+01 2.26245e+00 188 2010 7 1.30540e+01 9.88420e-01 26 2010 8 1.02002e+01 3.47910e+00 288 2010 9 1.68356e+01 2.85437e+00 275 2010 10 2.09614e+01 3.88887e+00 459 2010 11 1.09652e+01 2.35729e+00 464 2010 12 1.02043e+01 3.27857e+00 518 2011 1 2.24059e+01 2.40938e+00 805 2011 2 2.40302e+01 4.35071e+00 596 2011 3 2.29042e+01 4.07330e+00 451 2011 4 2.59610e+01 3.27935e+00 522 2011 5 2.45541e+01 6.19218e+00 135 2011 6 1.28858e+01 5.48693e-01 64 2011 7 2.04424e+01 1.02458e+00 126 2011 8 2.27582e+01 8.85772e-01 187 2011 9 2.01091e+01 1.36980e+00 320 2011 10 2.21578e+01 4.29758e+00 360 2011 11 1.72230e+01 2.77989e+00 528 2011 12 1.97316e+01 2.64731e+00 534 2012 1 2.42070e+01 4.71146e+00 826 2012 2 2.80735e+01 3.29192e+00 786 2012 3 2.55578e+01 2.37587e+00 253 2012 4 1.94052e+01 5.44567e+00 270 2012 5 2.78411e+01 3.15560e+00 156 2012 6 2.60591e+01 5.87069e+00 192 2012 7 2.01521e+01 8.99035e-01 128 2012 8 2.40933e+01 3.73515e+00 275 2012 9 1.49111e+01 5.72572e+00 318 2012 10 1.34577e+01 4.79108e+00 374 2012 11 2.11555e+01 3.80468e+00 670 2012 12 1.91727e+01 3.70288e+00 688 2013 1 1.62557e+01 5.36964e+00 667 2013 2 2.42647e+01 5.92799e+00 824 2013 3 2.13366e+01 6.93585e+00 512 2013 4 2.53292e+01 6.73438e+00 372 2013 5 2.88124e+01 5.06446e+00 256 2013 6 nan nan 0 2013 7 2.06840e+01 4.97493e+00 351 2013 8 1.66633e+01 3.76739e+00 279 2013 9 1.29329e+01 4.13662e+00 335 2013 10 1.63603e+01 3.53249e+00 352 2013 11 1.45833e+01 2.64933e+00 531 2013 12 1.61248e+01 5.24395e+00 422 2014 1 2.09194e+01 3.98992e+00 581 2014 2 2.60654e+01 4.23458e+00 743 2014 3 2.60025e+01 5.90877e+00 518 2014 4 2.64449e+01 5.11593e+00 435 2014 5 2.38230e+01 2.96673e+00 317 2014 6 2.52797e+01 3.97515e+00 256 2014 7 3.01960e+01 4.73305e+00 128 2014 8 2.74601e+01 4.69220e+00 192 2014 9 2.60486e+01 2.52974e+00 250 2014 10 1.55803e+01 3.89802e+00 566 2014 11 1.83507e+01 6.38011e+00 597 2014 12 2.24216e+01 4.16154e+00 777 2015 1 2.37690e+01 5.02549e+00 795 2015 2 2.02802e+01 5.50401e+00 568 2015 3 2.82120e+01 5.74394e+00 698 2015 4 3.09956e+01 6.68208e+00 352 2015 5 2.31112e+01 1.86447e+00 192 2015 6 2.97709e+01 7.48817e-01 64 2015 7 2.07917e+01 3.32767e-01 64 2015 8 2.27890e+01 2.05594e+00 390 2015 9 2.10867e+01 2.89795e+00 335 2015 10 1.96749e+01 3.27891e+00 640 2015 11 2.20009e+01 4.35820e+00 400 2015 12 2.27048e+01 2.69956e+00 570 2016 1 1.93444e+01 5.01782e+00 692 2016 2 2.34222e+01 3.49545e+00 661 2016 3 2.65797e+01 5.50835e+00 354 2016 4 2.54471e+01 6.79429e+00 445 2016 5 2.00845e+01 1.73220e+00 153 2016 6 2.90302e+01 3.56065e+00 256 2016 7 2.12887e+01 1.26909e+00 192 2016 8 2.60300e+01 5.15960e+00 390 2016 9 2.46751e+01 3.28473e+00 488 2016 10 1.48052e+01 3.52161e+00 224 2016 11 1.69029e+01 3.84105e+00 359 2016 12 1.91827e+01 4.26435e+00 588 2017 1 1.94047e+01 5.19567e+00 624 2017 2 2.51858e+01 4.74183e+00 725 2017 3 2.83524e+01 8.56513e+00 390 2017 4 2.28842e+01 6.33216e+00 395 2017 5 2.93576e+01 7.16212e+00 288 2017 6 2.43214e+01 8.83573e+00 323 2017 7 1.53493e+01 6.61424e+00 222 2017 8 9.14726e+00 2.04175e+00 192 2017 9 1.91632e+01 5.43027e+00 177 2017 10 1.78372e+01 3.94660e+00 350 2017 11 1.32456e+01 4.78362e+00 448 2017 12 1.82610e+01 4.37282e+00 592 2018 1 2.50694e+01 3.53141e+00 788 2018 2 2.54919e+01 3.24172e+00 553 2018 3 2.29880e+01 4.79520e+00 594 2018 4 2.96477e+01 6.55191e+00 490 2018 5 2.18206e+01 4.27343e+00 327 2018 6 1.69418e+01 2.40474e+00 243 2018 7 2.09056e+01 4.09996e+00 128 2018 8 2.15361e+01 3.98044e+00 372 2018 9 1.78607e+01 1.69803e+00 285 2018 10 1.29104e+01 4.03272e+00 626 2018 11 1.25998e+01 5.05063e+00 746 2018 12 2.05785e+01 4.04948e+00 437 2019 1 2.22617e+01 2.89979e+00 617 2019 2 1.89175e+01 7.83080e+00 499 2019 3 2.75779e+01 2.88940e+00 789 2019 4 3.03106e+01 6.69360e+00 451 2019 5 1.78409e+01 1.44114e+00 70 2019 6 2.49827e+01 8.20272e+00 243 2019 7 2.45974e+01 6.73441e+00 256 2019 8 2.75311e+01 4.62863e+00 459 2019 9 2.07877e+01 4.82846e+00 248 2019 10 2.26743e+01 5.10535e+00 441 2019 11 1.94323e+01 4.63697e+00 950 2019 12 1.81622e+01 4.23878e+00 704 2020 1 1.92406e+01 5.16679e+00 488 2020 2 2.52205e+01 6.86083e+00 443 2020 3 2.45694e+01 5.92105e+00 342 2020 4 2.72274e+01 5.21118e+00 950 2020 5 2.69493e+01 3.23087e+00 193 2020 6 2.35129e+01 4.48248e+00 523 2020 7 2.15389e+01 2.91884e+00 300 2020 8 2.81805e+01 1.51438e+00 174 2020 9 2.43388e+01 1.77324e+00 320 2020 10 2.18190e+01 2.91957e+00 302 2020 11 2.03683e+01 2.23735e+00 502 2020 12 1.87548e+01 4.86530e+00 952 2021 1 1.66419e+01 7.11929e+00 750 2021 2 3.08505e+01 6.52963e+00 618 2021 3 2.77602e+01 4.69230e+00 817 2021 4 2.74370e+01 6.64252e+00 514 2021 5 2.38097e+01 1.18731e+00 131 2021 6 5.04274e+00 7.31948e-01 36 2021 7 1.41822e+01 7.23432e+00 128 2021 8 2.67001e+01 3.02789e+00 245 2021 9 1.75586e+01 4.42263e+00 359 2021 10 1.33158e+01 3.01052e+00 552 2021 11 1.39582e+01 4.48426e+00 879 2021 12 1.93128e+01 2.49977e+00 1014 2022 1 2.17764e+01 4.60171e+00 869 2022 2 2.48827e+01 5.20220e+00 572 2022 3 3.26195e+01 4.61101e+00 472 2022 4 2.25510e+01 1.11808e+00 63 2022 5 2.84202e+01 5.61528e+00 160 2022 6 2.90246e+01 3.89088e+00 375 2022 7 2.37491e+01 3.61831e+00 254 2022 8 1.64508e+01 4.28487e+00 213 2022 9 1.43169e+01 7.68485e+00 193 2022 10 2.07141e+01 3.47444e+00 430 2022 11 1.93697e+01 2.61516e+00 708 2022 12 1.94669e+01 3.39387e+00 818 2023 1 2.10530e+01 5.12911e+00 710 2023 2 2.49271e+01 7.25453e+00 504 2023 3 2.25650e+01 6.45115e+00 929 2023 4 2.25232e+01 2.78416e+00 606 2023 5 1.97744e+01 3.65581e+00 502 2023 6 2.30205e+01 7.59024e+00 248 2023 7 nan nan 0 2023 8 2.05729e+01 6.54874e+00 393 2023 9 2.21394e+01 3.56323e+00 478 2023 10 2.39026e+01 6.67999e+00 469 2023 11 2.07488e+01 3.73653e+00 559 2023 12 2.14712e+01 4.79090e+00 767 2024 1 2.32749e+01 4.69814e+00 544 2024 2 1.99839e+01 5.61923e+00 692 2024 3 2.62012e+01 6.08725e+00 500 2024 4 2.72416e+01 1.09828e+00 64