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 1.53861e+01 2.28866e+00 260 2002 8 1.84964e+01 8.10715e+00 396 2002 9 1.66029e+01 8.39547e+00 495 2002 10 1.41654e+01 6.73896e+00 732 2002 11 1.04407e+01 6.00912e+00 1033 2002 12 6.16914e+00 3.13005e+00 745 2003 1 3.49654e+00 2.86598e+00 983 2003 2 6.62811e+00 2.93145e+00 640 2003 3 1.77574e+00 2.54561e+00 160 2003 4 3.19515e+01 3.10426e+01 124 2003 5 8.32659e-01 1.04133e+00 126 2003 6 2.42799e+01 2.51215e+01 217 2003 7 8.23684e+00 4.02051e+00 70 2003 8 1.35828e+01 1.55685e+01 204 2003 9 1.72382e+01 1.36343e+01 449 2003 10 1.16222e+01 1.03717e+01 838 2003 11 1.07769e+01 6.08024e+00 1140 2003 12 4.73147e+00 3.86215e+00 896 2004 1 9.18153e+00 7.64392e+00 769 2004 2 9.47083e+00 3.61402e+00 192 2004 3 2.80529e+00 2.80407e+00 722 2004 4 5.81950e+00 3.01021e+00 577 2004 5 7.14673e+00 3.61245e+00 571 2004 6 1.14466e+01 3.64443e+00 286 2004 7 3.46176e+00 2.85908e+00 320 2004 8 1.10231e+01 8.60767e+00 406 2004 9 5.98437e+00 6.69772e+00 319 2004 10 4.90452e+00 1.44818e+01 223 2004 11 4.02274e+00 9.50689e+00 433 2004 12 2.06498e-01 4.17896e-01 650 2005 1 8.05145e+00 1.18125e+01 773 2005 2 1.67090e+00 1.50963e+00 573 2005 3 2.93389e+00 2.96630e+00 640 2005 4 8.51778e+00 1.48909e+01 380 2005 5 1.19627e+01 1.57598e+01 385 2005 6 8.47882e+00 1.18446e+01 448 2005 7 5.12308e+00 7.25420e+00 414 2005 8 3.13385e+00 3.41509e+00 128 2005 9 8.20926e+00 5.93490e+00 368 2005 10 1.21297e+01 1.23874e+01 1018 2005 11 7.39521e+00 5.47686e+00 1031 2005 12 7.93838e+00 4.11494e+00 1024 2006 1 5.54490e+00 4.81191e+00 854 2006 2 3.01732e+00 3.58204e+00 783 2006 3 4.17794e+00 9.39735e+00 804 2006 4 1.34680e+00 9.37788e-01 316 2006 5 1.25646e+01 7.86168e+00 635 2006 6 1.19936e+01 9.35890e+00 330 2006 7 1.07337e+01 1.18685e+01 510 2006 8 1.13355e+01 6.77740e+00 387 2006 9 1.02041e+01 6.35582e+00 640 2006 10 1.09546e+01 5.48123e+00 881 2006 11 1.18252e+01 5.99415e+00 887 2006 12 1.36518e+01 8.66440e+00 500 2007 1 1.75783e+01 5.73065e+00 512 2007 2 1.47187e+01 6.62794e+00 832 2007 3 1.49558e+01 4.30101e+00 1148 2007 4 1.27395e+01 5.40411e+00 747 2007 5 1.63442e+01 2.67148e+00 309 2007 6 1.45759e+01 2.91777e+00 460 2007 7 9.18208e+00 3.77827e+00 479 2007 8 9.88227e+00 3.52210e+00 448 2007 9 1.56033e+01 2.86749e+00 557 2007 10 1.94236e+01 4.39472e+00 677 2007 11 1.99359e+01 3.77614e+00 1093 2007 12 2.03795e+01 8.10567e+00 777 2008 1 1.87250e+01 6.68881e+00 894 2008 2 1.90357e+01 4.88839e+00 1152 2008 3 1.04571e+01 7.59069e+00 841 2008 4 6.41550e+00 1.27792e+01 478 2008 5 5.26677e+00 6.11639e+00 567 2008 6 1.37436e+01 1.17573e+01 290 2008 7 1.18481e+01 9.62391e+00 408 2008 8 7.55364e+00 2.30627e+00 192 2008 9 9.32359e+00 8.28836e+00 683 2008 10 7.45444e+00 5.54182e+00 965 2008 11 4.66863e+00 2.66008e+00 923 2008 12 5.10997e+00 3.67351e+00 832 2009 1 6.25152e+00 5.21175e+00 673 2009 2 6.14435e+00 3.18278e+00 960 2009 3 1.11669e+01 4.90838e+00 959 2009 4 6.52685e+00 6.96947e+00 614 2009 5 1.54257e+01 1.41389e+01 192 2009 6 9.39764e+00 1.02372e+01 442 2009 7 1.71136e+01 1.39453e+01 267 2009 8 9.40641e+00 6.62813e+00 458 2009 9 1.45905e+01 1.30750e+01 697 2009 10 9.92625e+00 5.23808e+00 824 2009 11 9.64247e+00 4.41946e+00 696 2009 12 7.67452e+00 4.77229e+00 256 2010 1 1.99635e+00 1.65782e+00 895 2010 2 3.24266e+00 6.36228e+00 760 2010 3 3.87831e-01 7.79523e-01 829 2010 4 2.18742e+00 3.33032e+00 266 2010 5 9.13904e+00 1.49973e+01 451 2010 6 9.76606e+00 5.74335e+00 596 2010 7 1.04145e+01 1.01169e+01 364 2010 8 1.94749e+01 5.60851e+00 122 2010 9 8.91343e+00 8.53679e+00 689 2010 10 6.69098e+00 5.19562e+00 1593 2010 11 1.11804e+01 5.69611e+00 1195 2010 12 1.14111e+01 6.08183e+00 1049 2011 1 1.48325e+01 5.00333e+00 832 2011 2 1.27037e+01 4.62353e+00 691 2011 3 1.01341e+01 3.34733e+00 811 2011 4 6.61047e+00 5.03596e+00 791 2011 5 1.04187e+01 6.92775e+00 628 2011 6 6.74851e+00 4.34317e+00 227 2011 7 6.68338e+00 4.35490e+00 379 2011 8 1.12293e+01 7.79026e+00 657 2011 9 1.28379e+01 7.79724e+00 694 2011 10 1.54621e+01 6.69878e+00 1033 2011 11 2.09882e+01 5.60832e+00 1088 2011 12 2.46660e+01 3.82504e+00 1048 2012 1 1.67300e+01 6.68643e+00 1070 2012 2 2.34943e+01 4.83753e+00 384 2012 3 1.64879e+01 6.15937e+00 1001 2012 4 1.49728e+01 6.77080e+00 904 2012 5 1.49738e+01 4.53501e+00 468 2012 6 1.35773e+01 9.17001e+00 320 2012 7 6.06129e-01 7.01637e-01 93 2012 8 4.01025e+00 6.52195e+00 208 2012 9 4.27505e+00 6.24611e+00 451 2012 10 6.18035e+00 1.27964e+01 755 2012 11 4.00847e+00 5.51336e+00 949 2012 12 4.86736e+00 3.25978e+00 656 2013 1 1.07988e+01 8.32736e+00 696 2013 2 1.23406e+01 6.99365e+00 687 2013 3 5.57897e+00 4.73500e+00 651 2013 4 1.03670e+01 9.85297e+00 490 2013 5 4.73345e+00 3.88745e+00 537 2013 6 2.35082e+01 2.09875e+01 315 2013 7 6.01942e+00 2.51596e+00 186 2013 8 1.62017e+00 1.90638e+00 100 2013 9 7.93316e+00 1.31767e+01 712 2013 10 1.56584e+01 1.66439e+01 727 2013 11 8.21722e+00 6.28279e+00 459 2013 12 1.26662e+01 6.56053e+00 716 2014 1 8.78857e+00 5.13402e+00 584 2014 2 4.43868e+00 3.09220e+00 793 2014 3 2.01549e+00 3.08907e+00 546 2014 4 3.98031e+00 6.25684e+00 252 2014 5 2.04102e-04 2.18165e-04 12 2014 6 1.28414e+01 9.87162e+00 197 2014 7 8.09547e+00 9.01742e+00 549 2014 8 1.00918e+01 7.95366e+00 281 2014 9 2.30055e+01 8.64115e+00 507 2014 10 8.37432e+00 7.64994e+00 1408 2014 11 8.63932e+00 4.96301e+00 1024 2014 12 1.57082e+01 6.31965e+00 867 2015 1 1.77450e+01 7.18784e+00 722 2015 2 8.52644e+00 6.94253e+00 809 2015 3 7.39162e+00 7.41079e+00 523 2015 4 5.59949e+00 6.58926e+00 187 2015 5 1.27767e+01 1.59801e+01 699 2015 6 1.13978e+01 9.87949e+00 513 2015 7 2.26764e+01 1.62821e+01 100 2015 8 8.68852e+00 4.66061e+00 508 2015 9 1.25173e+01 3.84968e+00 256 2015 10 5.94519e+00 3.68133e+00 785 2015 11 4.54132e+00 3.56772e+00 579 2015 12 1.00377e+01 5.73417e+00 615 2016 1 1.00335e+01 5.38971e+00 704 2016 2 5.64681e+00 4.89922e+00 1216 2016 3 3.04111e+00 2.19788e+00 699 2016 4 7.62115e+00 1.01149e+01 442 2016 5 3.69048e+00 3.64764e+00 552 2016 6 7.14173e+00 6.60130e+00 496 2016 7 5.25033e+00 5.81217e+00 724 2016 8 9.54213e+00 9.24016e+00 691 2016 9 1.18350e+01 1.65744e+01 1031 2016 10 1.10247e+01 7.18385e+00 774 2016 11 1.32659e+01 5.66955e+00 971 2016 12 1.56511e+01 3.67164e+00 785 2017 1 1.69079e+01 6.91953e+00 719 2017 2 9.98449e+00 4.12358e+00 995 2017 3 1.17904e+01 5.78297e+00 964 2017 4 8.47446e+00 4.46980e+00 757 2017 5 7.93118e+00 3.87435e+00 476 2017 6 2.05910e+01 1.04858e+01 384 2017 7 2.38070e+01 4.61755e+00 124 2017 8 1.14178e+01 1.39968e+01 511 2017 9 7.40528e+00 6.25394e+00 599 2017 10 3.63711e+00 7.22720e+00 556 2017 11 1.11983e+01 7.55603e+00 1073 2017 12 1.17541e+01 5.95739e+00 677 2018 1 1.00917e+01 3.64010e+00 815 2018 2 8.90294e+00 5.16518e+00 479 2018 3 5.43450e+00 3.73301e+00 658 2018 4 4.15349e+00 4.75453e+00 552 2018 5 7.40793e+00 6.75121e+00 567 2018 6 5.18947e+00 4.49942e+00 341 2018 7 2.50415e+01 1.54134e+01 254 2018 8 5.24703e+00 5.96901e+00 294 2018 9 1.67314e+01 1.57306e+01 851 2018 10 1.17305e+01 1.25535e+01 1032 2018 11 5.24518e+00 6.75056e+00 269 2018 12 2.14279e+00 2.43450e+00 654 2019 1 2.09291e+00 6.70737e+00 640 2019 2 2.96833e+01 1.40169e+01 139 2019 3 3.18391e+00 4.00407e+00 528 2019 4 8.62504e-01 6.23766e-01 266 2019 5 5.02186e+00 5.11397e+00 876 2019 6 1.13746e+01 1.24256e+01 265 2019 7 9.46610e+00 8.46786e+00 448 2019 8 1.17504e+01 1.64571e+01 689 2019 9 7.77071e+00 7.48330e+00 738 2019 10 9.60529e+00 7.76495e+00 815 2019 11 8.13510e+00 5.26082e+00 696 2019 12 9.76401e+00 4.65550e+00 384 2020 1 7.80880e+00 2.78592e+00 511 2020 2 1.14861e+01 6.77648e+00 658 2020 3 8.94390e+00 6.97952e+00 674 2020 4 5.64475e+00 5.76285e+00 624 2020 5 5.41504e+00 5.99132e+00 666 2020 6 2.41176e+00 3.30367e+00 514 2020 7 7.03041e+00 9.01229e+00 364 2020 8 4.50324e+00 4.75492e+00 223 2020 9 1.08234e+01 1.64334e+01 207 2020 10 8.79309e+00 1.33643e+01 774 2020 11 5.94950e+00 9.64448e+00 856 2020 12 4.72929e+00 4.94241e+00 517 2021 1 3.07429e+00 2.95296e+00 585 2021 2 7.88631e-01 6.84017e-01 532 2021 3 5.10728e-01 8.16899e-01 279 2021 4 1.23738e+00 1.34345e+00 189 2021 5 3.38380e+00 6.12430e+00 530 2021 6 2.02011e+01 1.77743e+01 160 2021 7 1.33760e+01 1.01070e+01 97 2021 8 1.73416e+01 2.83150e+01 255 2021 9 6.11165e+00 1.05970e+01 526 2021 10 8.05968e+00 9.28896e+00 559 2021 11 9.49012e-01 1.43042e+00 636 2021 12 7.48895e+00 1.36737e+01 495 2022 1 2.63626e+00 2.64429e+00 960 2022 2 4.25350e+00 2.78533e+00 832 2022 3 3.43174e+00 3.32291e+00 721 2022 4 4.38980e+00 2.11171e+00 114 2022 5 9.27118e+00 1.46985e+01 443 2022 6 1.14751e+01 6.90250e+00 482 2022 7 2.72289e+01 1.56919e+01 190 2022 8 1.51137e+01 1.13261e+01 482 2022 9 1.32545e+01 1.14651e+01 432 2022 10 4.83329e+00 4.71450e+00 1309 2022 11 1.16448e+01 5.98061e+00 493 2022 12 1.13099e+01 6.38767e+00 1154 2023 1 1.16457e+01 4.74754e+00 896 2023 2 1.42282e+01 4.53833e+00 651 2023 3 9.17055e+00 6.48928e+00 768 2023 4 7.18929e+00 5.96945e+00 324 2023 5 1.02243e+01 8.20932e+00 408 2023 6 1.76078e+01 3.76140e+00 320 2023 7 1.17477e+01 7.46577e+00 448 2023 8 1.87880e+01 1.42414e+01 576 2023 9 9.86924e+00 1.27633e+01 458 2023 10 8.68516e+00 7.07493e+00 641 2023 11 9.00929e+00 7.09198e+00 556 2023 12 5.21121e+00 4.53292e+00 330 2024 1 2.36984e+00 3.35949e+00 576 2024 2 3.87233e+00 3.44922e+00 399 2024 3 5.80860e-01 5.47358e-01 176 2024 4 nan nan 0