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 2.37101e+01 7.43546e+00 1012 2002 8 1.02059e+01 6.14038e+00 788 2002 9 5.18114e+00 5.61280e+00 989 2002 10 3.52236e+00 2.94821e+00 834 2002 11 6.59904e-01 5.61133e-01 918 2002 12 2.59543e+00 1.71231e+00 515 2003 1 5.36393e+00 1.91692e+00 768 2003 2 6.79351e+00 1.97688e+00 360 2003 3 1.14030e+01 3.82224e+00 567 2003 4 2.21329e+01 4.45330e+00 389 2003 5 1.42687e+01 8.18758e+00 323 2003 6 1.95292e+01 4.76748e+00 547 2003 7 2.38036e+01 3.58037e+00 384 2003 8 1.82007e+01 7.90140e+00 817 2003 9 3.42399e+00 4.04571e+00 1100 2003 10 1.55624e+00 1.08698e+00 677 2003 11 2.02851e+00 1.93358e+00 882 2003 12 2.02626e+00 1.16948e+00 574 2004 1 2.52200e+00 9.31990e-01 601 2004 2 4.47475e+00 2.01972e+00 573 2004 3 1.07979e+01 3.70079e+00 844 2004 4 2.20551e+01 7.37157e+00 324 2004 5 1.53330e+01 7.29824e+00 256 2004 6 1.96730e+01 5.49774e+00 713 2004 7 2.69824e+01 6.46848e+00 471 2004 8 5.99535e+00 5.41901e+00 1000 2004 9 1.98351e+00 1.92715e+00 726 2004 10 3.34339e+00 3.25650e+00 775 2004 11 1.08076e+00 7.01107e-01 256 2004 12 3.04783e+00 2.34838e+00 563 2005 1 4.63304e+00 1.00199e+00 513 2005 2 8.44194e+00 2.75422e+00 524 2005 3 1.44115e+01 3.42562e+00 673 2005 4 1.66039e+01 5.75097e+00 450 2005 5 2.57892e+01 3.86647e+00 256 2005 6 1.85705e+01 7.84931e+00 787 2005 7 1.70505e+01 9.08814e+00 311 2005 8 1.17410e+01 6.89518e+00 657 2005 9 2.02857e+00 2.20444e+00 1060 2005 10 2.21393e+00 1.50048e+00 999 2005 11 1.39377e+00 1.27391e+00 568 2005 12 1.66887e+00 1.08537e+00 986 2006 1 3.61172e+00 1.90951e+00 591 2006 2 6.30270e+00 2.60467e+00 401 2006 3 9.80331e+00 5.00192e+00 801 2006 4 2.49734e+01 9.51638e+00 589 2006 5 1.94967e+01 7.08073e+00 309 2006 6 2.90436e+01 8.00933e+00 774 2006 7 1.81605e+01 9.61698e+00 546 2006 8 1.09355e+01 1.24818e+00 63 2006 9 1.95785e+00 2.26377e+00 1049 2006 10 3.06844e+00 2.61554e+00 726 2006 11 1.88583e+00 1.27454e+00 940 2006 12 8.24598e-01 6.41862e-01 613 2007 1 3.10168e+00 1.39069e+00 822 2007 2 5.99465e+00 2.94521e+00 905 2007 3 1.12238e+01 3.06987e+00 566 2007 4 9.56919e+00 1.90690e+00 120 2007 5 1.45323e+01 1.18010e+01 140 2007 6 1.63643e+01 6.93312e+00 530 2007 7 5.16191e+00 3.28966e+00 166 2007 8 2.27614e+01 9.44636e+00 795 2007 9 6.26997e+00 7.18451e+00 1038 2007 10 2.97743e+00 1.69477e+00 790 2007 11 2.42193e+00 2.13800e+00 968 2007 12 1.84089e+00 1.14318e+00 573 2008 1 4.85040e+00 2.00799e+00 260 2008 2 5.78771e+00 2.81720e+00 534 2008 3 1.12124e+01 3.62427e+00 780 2008 4 2.71767e+01 7.82976e+00 362 2008 5 2.20971e-04 5.19512e-04 14 2008 6 2.49052e+01 9.53631e+00 113 2008 7 9.87469e+00 8.67257e+00 309 2008 8 1.14231e+01 6.17344e+00 118 2008 9 2.95490e+00 2.53019e+00 567 2008 10 1.67096e+00 1.48970e+00 772 2008 11 1.55321e+00 1.45518e+00 596 2008 12 2.83547e+00 1.65065e+00 896 2009 1 7.13084e+00 3.28591e+00 625 2009 2 7.32454e+00 2.34285e+00 317 2009 3 7.82586e+00 2.33089e+00 217 2009 4 2.20727e+01 2.83707e+00 126 2009 5 9.13513e+00 2.26446e+00 294 2009 6 2.37536e+01 5.37973e+00 256 2009 7 1.24261e+01 6.92752e+00 230 2009 8 1.57816e+01 8.30607e+00 315 2009 9 7.10556e+00 8.02911e+00 629 2009 10 2.80052e+00 2.25890e+00 509 2009 11 1.36333e+00 7.70382e-01 656 2009 12 3.13758e+00 2.20490e+00 527 2010 1 1.42850e+00 1.11679e+00 889 2010 2 9.21298e+00 5.36913e+00 530 2010 3 1.62559e+01 7.23735e+00 637 2010 4 2.06700e+01 5.58343e+00 256 2010 5 1.71993e+01 7.48113e+00 320 2010 6 2.84953e+01 5.67514e+00 255 2010 7 2.64511e+01 6.39744e+00 640 2010 8 2.45942e+01 8.35223e+00 247 2010 9 7.24344e+00 4.99044e+00 510 2010 10 6.52654e+00 4.11055e+00 646 2010 11 2.66531e+00 1.79855e+00 1172 2010 12 2.74624e+00 1.10969e+00 810 2011 1 4.27864e+00 2.21786e+00 621 2011 2 8.18309e+00 2.86348e+00 320 2011 3 9.06497e+00 3.93514e+00 783 2011 4 6.92678e+00 3.84708e+00 188 2011 5 2.42333e+01 9.16905e+00 384 2011 6 1.82960e+01 4.62257e+00 195 2011 7 3.05810e+01 6.64653e+00 357 2011 8 2.07413e+01 9.70282e+00 826 2011 9 4.57381e+00 2.10564e+00 764 2011 10 4.02566e+00 1.63010e+00 896 2011 11 3.24803e+00 1.93326e+00 454 2011 12 3.46303e+00 2.15056e+00 1088 2012 1 6.61254e+00 2.05642e+00 771 2012 2 9.33587e+00 3.05951e+00 731 2012 3 1.38264e+01 3.59705e+00 575 2012 4 1.63197e+01 8.85676e+00 192 2012 5 4.16835e+01 2.40988e+00 64 2012 6 2.46522e+01 6.64534e+00 320 2012 7 2.52120e+01 4.33797e+00 382 2012 8 2.11885e+01 7.51042e+00 311 2012 9 5.35662e+00 4.23301e+00 717 2012 10 7.24634e+00 3.10959e+00 632 2012 11 5.43690e+00 2.53242e+00 603 2012 12 4.53349e+00 1.70372e+00 308 2013 1 4.46267e+00 2.87112e+00 711 2013 2 8.73276e+00 4.08638e+00 723 2013 3 1.18437e+01 4.71124e+00 704 2013 4 3.36692e+01 8.53835e+00 203 2013 5 3.22973e+01 2.42610e+00 362 2013 6 2.97432e+01 6.85109e+00 448 2013 7 3.09456e+01 7.37232e+00 543 2013 8 1.99873e+01 6.89212e+00 742 2013 9 9.98069e+00 6.88696e+00 931 2013 10 2.98222e+00 2.25397e+00 870 2013 11 4.01698e+00 2.77065e+00 638 2013 12 8.57903e+00 4.50692e+00 787 2014 1 1.08862e+01 4.28844e+00 662 2014 2 1.15610e+01 2.62777e+00 607 2014 3 2.54342e+01 5.49147e+00 698 2014 4 2.27670e+01 1.13289e+01 482 2014 5 2.57251e+01 5.80422e+00 384 2014 6 2.92878e+01 7.13457e+00 819 2014 7 2.21902e+01 6.15016e+00 774 2014 8 1.44535e+01 9.90425e+00 511 2014 9 1.05403e+01 8.02824e+00 1203 2014 10 4.77894e+00 3.31796e+00 996 2014 11 2.29202e+00 1.54121e+00 881 2014 12 4.82335e+00 2.50075e+00 961 2015 1 7.85579e+00 2.67896e+00 720 2015 2 8.13980e+00 3.52063e+00 511 2015 3 1.52764e+01 4.43773e+00 518 2015 4 8.72307e+00 6.34185e+00 384 2015 5 1.96705e+01 7.93870e+00 234 2015 6 2.45411e+01 4.27847e+00 829 2015 7 1.29973e+01 4.15867e+00 319 2015 8 2.70656e+01 7.22325e+00 722 2015 9 2.89556e+00 2.21469e+00 690 2015 10 1.77224e+00 1.60403e+00 572 2015 11 2.82714e+00 1.86656e+00 773 2015 12 2.90802e+00 1.03816e+00 741 2016 1 7.10087e+00 2.08775e+00 768 2016 2 1.02412e+01 2.03147e+00 1153 2016 3 2.14462e+01 3.99017e+00 594 2016 4 2.75501e+01 6.63756e+00 709 2016 5 2.11722e+01 1.13921e+01 632 2016 6 3.58677e+01 7.80083e+00 576 2016 7 2.53515e+01 6.78673e+00 554 2016 8 3.50786e+01 5.33371e+00 660 2016 9 6.09284e+00 3.78192e+00 772 2016 10 2.94474e+00 1.77347e+00 1041 2016 11 1.98785e+00 9.95939e-01 687 2016 12 4.37377e+00 2.66944e+00 576 2017 1 5.93348e+00 2.78616e+00 685 2017 2 6.61536e+00 2.24409e+00 581 2017 3 1.56726e+01 5.70456e+00 627 2017 4 2.42454e+01 4.70518e+00 214 2017 5 1.99183e+01 1.05505e+01 249 2017 6 3.09878e+01 9.60462e+00 996 2017 7 2.54126e+01 7.67817e+00 512 2017 8 2.19553e+01 1.30742e+01 713 2017 9 3.61096e+00 2.43767e+00 676 2017 10 4.08625e+00 4.10068e+00 824 2017 11 1.72892e+00 1.14343e+00 763 2017 12 3.30613e+00 2.88358e+00 885 2018 1 5.94304e+00 3.31193e+00 960 2018 2 6.15247e+00 2.57570e+00 468 2018 3 1.09408e+01 5.00379e+00 832 2018 4 1.88255e+01 7.66924e+00 387 2018 5 2.28184e+01 4.09504e+00 343 2018 6 1.91627e+01 6.98226e+00 574 2018 7 2.68787e+01 6.86513e+00 693 2018 8 1.43480e+01 8.97864e+00 785 2018 9 1.04381e+01 6.41116e+00 941 2018 10 3.00182e+00 2.63199e+00 439 2018 11 1.60507e+00 9.88237e-01 409 2018 12 5.19400e+00 2.59712e+00 766 2019 1 4.29756e+00 2.05844e+00 320 2019 2 7.66091e+00 2.28313e+00 704 2019 3 9.07032e+00 2.16148e+00 969 2019 4 2.62111e+01 6.98565e+00 671 2019 5 2.08781e+01 7.22947e+00 710 2019 6 2.95283e+01 1.07310e+01 958 2019 7 2.85762e+01 5.50839e+00 874 2019 8 2.14015e+01 1.12658e+01 886 2019 9 8.90549e+00 5.30030e+00 967 2019 10 3.38570e+00 2.16686e+00 703 2019 11 1.78404e+00 1.36468e+00 664 2019 12 2.51107e+00 8.16450e-01 308 2020 1 5.52127e+00 2.45899e+00 738 2020 2 5.96325e+00 2.53708e+00 768 2020 3 1.11108e+01 3.65265e+00 654 2020 4 2.61098e+01 5.75037e+00 445 2020 5 2.01459e+01 6.18546e+00 571 2020 6 2.51089e+01 4.52587e+00 960 2020 7 2.45129e+01 5.65825e+00 720 2020 8 1.43733e+01 5.67784e+00 445 2020 9 5.40832e+00 3.86123e+00 896 2020 10 3.28312e+00 1.80173e+00 1353 2020 11 2.61282e+00 1.99818e+00 543 2020 12 1.95743e+00 9.75247e-01 512 2021 1 4.66156e+00 1.86516e+00 1033 2021 2 8.09426e+00 1.85294e+00 768 2021 3 1.10337e+01 3.45002e+00 457 2021 4 2.67332e+01 6.46931e+00 320 2021 5 3.22882e+01 8.53170e+00 516 2021 6 2.85781e+01 7.23994e+00 763 2021 7 2.91482e+01 4.88177e+00 949 2021 8 1.57344e+01 8.58822e+00 774 2021 9 3.37512e+00 1.53880e+00 1023 2021 10 2.97723e+00 2.91200e+00 1215 2021 11 2.85684e+00 1.69216e+00 765 2021 12 3.83363e+00 2.13383e+00 452 2022 1 7.34671e+00 3.95566e+00 522 2022 2 9.28627e+00 2.45122e+00 832 2022 3 8.67607e+00 3.02443e+00 377 2022 4 1.40260e+01 2.62430e+00 64 2022 5 3.17154e+01 3.95711e+00 310 2022 6 3.45150e+01 4.45671e+00 490 2022 7 3.56573e+01 4.31115e+00 367 2022 8 2.12995e+01 5.10427e+00 516 2022 9 1.16672e+01 6.93790e+00 960 2022 10 6.95196e+00 2.62361e+00 798 2022 11 3.65568e+00 2.91938e+00 495 2022 12 5.44126e+00 2.38434e+00 703 2023 1 5.19542e+00 2.05987e+00 321 2023 2 6.61278e+00 6.69442e+00 576 2023 3 1.97688e+01 2.68050e+00 1017 2023 4 2.13145e+01 6.05221e+00 785 2023 5 2.52911e+01 3.06295e+00 468 2023 6 2.68936e+01 3.48647e+00 957 2023 7 2.93971e+01 4.85950e+00 896 2023 8 1.99558e+01 4.29886e+00 658 2023 9 6.62819e+00 4.65902e+00 1069 2023 10 3.82256e+00 2.17814e+00 770 2023 11 2.60005e+00 2.68597e+00 552 2023 12 2.45459e+00 1.40748e+00 760 2024 1 5.58606e+00 2.33428e+00 953 2024 2 1.26024e+01 2.03762e+00 1018 2024 3 1.31695e+01 2.96547e+00 679 2024 4 1.86642e+01 8.08855e-01 128