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 1.97057e+01 2.80166e+00 154 2002 8 1.71870e+01 5.35794e+00 553 2002 9 1.48488e+01 8.36751e+00 516 2002 10 1.47178e+01 4.11304e+00 983 2002 11 5.36538e+00 4.48083e+00 650 2002 12 4.21553e+00 4.22718e+00 826 2003 1 4.02732e+00 3.59661e+00 982 2003 2 1.16794e+01 3.42579e+00 658 2003 3 1.61654e+01 3.17389e+00 405 2003 4 1.69355e+01 5.39721e+00 704 2003 5 1.89746e+01 4.26181e+00 768 2003 6 1.25649e+01 4.66592e+00 269 2003 7 2.55474e+01 4.39440e+00 348 2003 8 1.75964e+01 4.11004e+00 518 2003 9 1.15278e+01 5.73958e+00 504 2003 10 1.12944e+01 3.86581e+00 890 2003 11 1.02567e+01 6.25089e+00 1087 2003 12 3.99015e+00 4.00602e+00 852 2004 1 1.49696e+01 6.90247e+00 907 2004 2 1.03899e+01 4.96534e+00 704 2004 3 2.63244e+01 4.25232e+00 960 2004 4 2.01837e+01 8.32096e+00 564 2004 5 3.33091e+01 3.91139e+00 517 2004 6 3.12644e+01 3.59746e+00 819 2004 7 2.93114e+01 5.54043e+00 373 2004 8 2.23098e+01 3.67575e+00 422 2004 9 6.60456e+00 6.89874e+00 385 2004 10 5.72033e+00 4.43532e+00 917 2004 11 9.80902e+00 6.26163e+00 893 2004 12 4.18677e+00 6.50329e+00 448 2005 1 5.20638e+00 5.61267e+00 896 2005 2 2.31574e+00 2.79219e+00 907 2005 3 1.77390e+00 2.04111e+00 448 2005 4 1.84955e+01 6.95144e+00 738 2005 5 2.81294e+01 3.78246e+00 448 2005 6 1.72560e+01 5.12746e+00 576 2005 7 9.47666e+00 4.83506e+00 598 2005 8 1.05257e+01 5.42530e+00 722 2005 9 1.56342e+00 1.28178e+00 539 2005 10 1.48840e+00 1.74158e+00 631 2005 11 1.80951e+00 2.07519e+00 953 2005 12 2.43758e+00 1.54995e+00 832 2006 1 5.69051e+00 4.98833e+00 791 2006 2 9.48353e+00 5.27076e+00 960 2006 3 1.92723e+01 4.37347e+00 1088 2006 4 3.18268e+01 4.64694e+00 896 2006 5 3.13999e+01 3.47824e+00 610 2006 6 2.54517e+01 8.74246e+00 644 2006 7 2.49541e+01 5.33785e+00 365 2006 8 1.28374e+01 3.94081e+00 414 2006 9 1.29817e+01 6.57317e+00 691 2006 10 6.51121e+00 4.10130e+00 1002 2006 11 4.05524e+00 3.16663e+00 640 2006 12 8.24287e+00 6.65738e+00 404 2007 1 1.25926e+01 5.64823e+00 510 2007 2 1.52624e+01 6.24501e+00 768 2007 3 2.66097e+01 7.94649e+00 768 2007 4 2.11460e+01 9.08746e+00 682 2007 5 2.37475e+01 5.02886e+00 597 2007 6 2.79583e+01 6.65464e+00 448 2007 7 2.51117e+01 8.96893e+00 573 2007 8 2.12866e+01 5.19177e+00 652 2007 9 1.39579e+01 8.39794e+00 832 2007 10 1.98454e+01 5.94087e+00 566 2007 11 1.74122e+01 6.16610e+00 993 2007 12 1.76904e+01 8.53728e+00 1151 2008 1 1.60162e+01 7.73666e+00 640 2008 2 2.52826e+01 1.06093e+01 859 2008 3 2.10909e+01 7.78116e+00 636 2008 4 2.65608e+01 4.45590e+00 960 2008 5 1.72870e+01 3.16966e+00 579 2008 6 2.21930e+01 3.82463e+00 704 2008 7 2.10613e+01 5.89189e+00 467 2008 8 1.94654e+01 2.79193e+00 192 2008 9 1.16377e+01 7.73906e+00 448 2008 10 2.17323e+01 7.17455e+00 1020 2008 11 1.20822e+01 4.41138e+00 904 2008 12 1.30394e+01 9.46113e+00 1247 2009 1 1.42602e+01 7.47778e+00 960 2009 2 1.88841e+01 9.58126e+00 1077 2009 3 2.08396e+01 1.00719e+01 1095 2009 4 2.26668e+01 6.36976e+00 576 2009 5 2.86253e+01 3.84019e+00 706 2009 6 2.24523e+01 2.92542e+00 320 2009 7 2.85837e+01 4.56879e+00 448 2009 8 2.52303e+01 6.97833e+00 594 2009 9 1.97433e+01 4.84334e+00 598 2009 10 1.61375e+01 5.90583e+00 871 2009 11 1.23127e+01 3.45729e+00 460 2009 12 8.90316e+00 6.15807e+00 487 2010 1 8.03463e+00 3.99871e+00 466 2010 2 4.98095e+00 4.16838e+00 481 2010 3 5.26730e+00 2.58203e+00 960 2010 4 2.14370e+01 8.40041e+00 740 2010 5 2.89611e+01 2.73286e+00 704 2010 6 3.21464e+01 2.69742e+00 733 2010 7 2.98142e+01 3.75395e+00 256 2010 8 2.51413e+01 5.07111e+00 443 2010 9 2.31301e+01 5.02758e+00 737 2010 10 1.75203e+01 4.78795e+00 1152 2010 11 1.73439e+01 5.25656e+00 1020 2010 12 5.79500e+00 4.17188e+00 835 2011 1 1.30421e+01 5.29745e+00 640 2011 2 1.65851e+01 5.51728e+00 694 2011 3 2.04324e+01 7.39556e+00 1088 2011 4 2.54695e+01 3.82587e+00 1005 2011 5 1.89191e+01 4.70242e+00 731 2011 6 2.28798e+01 5.92746e+00 576 2011 7 2.49194e+01 5.30733e+00 497 2011 8 1.31303e+01 7.40649e+00 340 2011 9 1.01592e+01 2.39892e+00 501 2011 10 7.64148e+00 4.28711e+00 768 2011 11 1.29498e+01 6.64750e+00 1024 2011 12 1.31757e+01 5.31390e+00 1126 2012 1 1.67027e+01 8.49642e+00 860 2012 2 1.97967e+01 8.26234e+00 832 2012 3 2.43614e+01 4.03138e+00 1038 2012 4 1.99637e+01 2.93537e+00 746 2012 5 2.40955e+01 3.50170e+00 548 2012 6 1.86431e+01 2.51284e+00 147 2012 7 1.91806e+01 1.22312e+01 249 2012 8 2.17083e+01 2.71003e+00 238 2012 9 1.63118e+01 3.52159e+00 547 2012 10 1.15749e+01 3.90562e+00 776 2012 11 1.04360e+01 5.23039e+00 798 2012 12 5.14226e+00 3.48482e+00 704 2013 1 1.02576e+01 5.53840e+00 1068 2013 2 9.93777e+00 6.25262e+00 777 2013 3 1.00044e+01 5.96120e+00 896 2013 4 2.33129e+01 6.41870e+00 574 2013 5 1.59950e+01 6.87498e+00 791 2013 6 1.75804e+01 5.17719e+00 627 2013 7 1.19073e+01 3.92413e+00 284 2013 8 1.15375e+01 6.78889e+00 381 2013 9 1.10635e+01 5.40439e+00 1024 2013 10 9.38652e+00 3.94812e+00 861 2013 11 1.41438e+01 3.38312e+00 197 2013 12 1.06858e+01 1.24676e+00 577 2014 1 3.80070e+00 3.98128e+00 563 2014 2 6.96847e+00 3.75771e+00 704 2014 3 6.82158e+00 2.62366e+00 669 2014 4 2.25749e+01 5.99751e+00 475 2014 5 2.18652e+01 4.37230e+00 768 2014 6 2.47636e+01 3.53331e+00 545 2014 7 2.77466e+01 2.44163e+00 230 2014 8 1.69157e+01 4.34005e+00 618 2014 9 9.79331e+00 3.24209e+00 140 2014 10 1.25589e+01 5.85342e+00 1324 2014 11 6.00224e+00 4.14991e+00 832 2014 12 1.19825e+01 3.46897e+00 760 2015 1 8.86383e+00 5.72651e+00 689 2015 2 4.99137e+00 2.39365e+00 640 2015 3 1.95086e+01 5.01983e+00 1119 2015 4 2.90646e+01 3.21125e+00 389 2015 5 2.22872e+01 3.07038e+00 768 2015 6 1.78827e+01 2.95683e+00 384 2015 7 1.50122e+01 7.15844e+00 246 2015 8 1.28277e+01 2.56902e+00 512 2015 9 7.16374e+00 4.98846e+00 399 2015 10 8.16064e+00 2.67779e+00 658 2015 11 6.91140e+00 2.57353e+00 953 2015 12 9.45887e+00 4.93317e+00 520 2016 1 4.01519e+00 4.55128e+00 419 2016 2 2.15139e+00 2.31689e+00 880 2016 3 1.61152e+01 7.81934e+00 630 2016 4 2.08332e+01 5.68985e+00 754 2016 5 2.23807e+01 4.95432e+00 768 2016 6 2.83891e+01 6.35127e+00 449 2016 7 2.60182e+01 3.13904e+00 636 2016 8 1.74764e+01 4.74225e+00 650 2016 9 1.56279e+01 8.42039e+00 898 2016 10 1.60362e+01 8.67850e+00 947 2016 11 1.68735e+01 4.19284e+00 903 2016 12 1.87390e+01 2.16866e+00 918 2017 1 1.46042e+01 8.33235e+00 833 2017 2 1.44992e+01 6.45526e+00 1088 2017 3 2.05715e+01 6.69100e+00 1117 2017 4 2.25161e+01 4.12674e+00 756 2017 5 1.87183e+01 6.72127e+00 689 2017 6 1.72607e+01 3.91768e+00 256 2017 7 2.44171e+01 3.53037e+00 412 2017 8 1.09980e+01 4.80864e+00 510 2017 9 4.83711e+00 4.66835e+00 845 2017 10 6.41481e+00 4.55532e+00 763 2017 11 7.25773e+00 3.07606e+00 988 2017 12 1.05444e+01 5.74234e+00 1074 2018 1 2.46950e+00 2.49393e+00 693 2018 2 2.35640e+01 5.48540e+00 917 2018 3 1.52192e+01 6.94532e+00 1113 2018 4 2.29345e+01 6.47691e+00 978 2018 5 2.74637e+01 4.91563e+00 512 2018 6 2.59238e+01 3.68223e+00 517 2018 7 2.87491e+01 7.43197e+00 406 2018 8 2.20656e+01 2.90936e+00 893 2018 9 7.88787e+00 8.35453e+00 909 2018 10 9.06242e+00 8.84342e+00 1035 2018 11 1.50379e+01 9.11477e+00 487 2018 12 7.38266e+00 5.01972e+00 564 2019 1 7.58868e+00 5.68610e+00 1013 2019 2 2.12990e+01 4.04080e+00 640 2019 3 1.91776e+01 5.18776e+00 832 2019 4 1.84410e+01 9.12403e+00 568 2019 5 2.96000e+01 2.94792e+00 886 2019 6 3.03895e+01 4.48524e+00 513 2019 7 1.66224e+01 4.47753e+00 576 2019 8 1.46204e+01 4.89913e+00 324 2019 9 1.53494e+01 6.22240e+00 707 2019 10 1.45478e+01 6.27969e+00 964 2019 11 8.86863e+00 3.95908e+00 524 2019 12 5.49606e+00 3.81382e+00 347 2020 1 9.76701e+00 5.55907e+00 735 2020 2 1.67593e+01 9.13574e+00 605 2020 3 2.55988e+01 9.10593e+00 960 2020 4 2.48956e+01 7.25827e+00 448 2020 5 2.72309e+01 4.23870e+00 820 2020 6 2.27727e+01 5.09171e+00 424 2020 7 2.15150e+01 2.25580e+00 320 2020 8 1.92205e+01 3.12645e+00 384 2020 9 8.09896e+00 3.06944e+00 320 2020 10 6.97183e+00 4.51992e+00 717 2020 11 3.31144e+00 2.91040e+00 901 2020 12 2.96818e+00 3.03511e+00 705 2021 1 9.07871e+00 4.73289e+00 832 2021 2 1.56053e+01 7.26650e+00 765 2021 3 2.35411e+01 3.06620e+00 757 2021 4 1.74201e+01 3.65091e+00 985 2021 5 2.47006e+01 7.03242e+00 960 2021 6 2.32524e+01 3.18172e+00 268 2021 7 1.09600e+01 5.14021e+00 438 2021 8 1.14648e+01 7.86737e+00 574 2021 9 6.16631e+00 4.19853e+00 639 2021 10 2.73729e+00 2.82935e+00 856 2021 11 6.71015e+00 4.89460e+00 821 2021 12 8.99695e+00 4.63650e+00 1034 2022 1 3.15735e+00 3.17567e+00 781 2022 2 1.39277e+01 7.76553e+00 1089 2022 3 1.89052e+01 5.87103e+00 960 2022 4 2.74759e+01 2.96351e+00 384 2022 5 3.20126e+01 3.58576e+00 737 2022 6 2.94123e+01 3.45703e+00 361 2022 7 2.01870e+01 5.60406e+00 565 2022 8 9.93228e+00 2.86478e+00 418 2022 9 4.44025e+00 1.67858e+00 413 2022 10 5.33801e+00 5.04209e+00 1007 2022 11 9.15563e+00 6.12140e+00 654 2022 12 1.29604e+01 4.01551e+00 960 2023 1 1.72406e+01 9.16440e+00 1008 2023 2 1.97810e+01 9.63086e+00 1120 2023 3 1.80860e+01 6.91148e+00 967 2023 4 2.49557e+01 2.86400e+00 473 2023 5 1.93784e+01 8.11503e+00 721 2023 6 2.36809e+01 4.09671e+00 523 2023 7 1.18070e+01 4.65943e+00 640 2023 8 4.59853e+00 4.10917e+00 444 2023 9 5.97390e+00 5.15401e+00 723 2023 10 1.68186e+01 5.88626e+00 669 2023 11 1.25109e+01 3.56700e+00 752 2023 12 8.06789e+00 5.49627e+00 374 2024 1 7.31039e+00 4.56120e+00 512 2024 2 1.17803e+01 7.62075e+00 966 2024 3 2.23001e+01 5.93066e+00 612 2024 4 nan nan 0