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 1.58059e+01 2.37388e+00 64 2002 8 2.13367e+01 5.67625e+00 547 2002 9 9.83300e+00 7.48242e+00 512 2002 10 1.47694e+01 8.63041e+00 972 2002 11 7.04434e+00 5.74730e+00 741 2002 12 6.87188e+00 4.67119e+00 768 2003 1 5.67991e+00 4.40511e+00 901 2003 2 1.16925e+01 6.35538e+00 549 2003 3 1.96903e+01 3.65061e+00 190 2003 4 2.01084e+01 6.40486e+00 762 2003 5 2.30337e+01 5.45449e+00 451 2003 6 2.02137e+01 5.64032e+00 279 2003 7 1.66447e+01 1.24724e+01 322 2003 8 2.08171e+01 1.35436e+01 252 2003 9 1.63558e+01 6.28780e+00 576 2003 10 1.18392e+01 7.93543e+00 640 2003 11 1.12460e+01 7.27816e+00 1042 2003 12 1.53017e+00 1.62528e+00 577 2004 1 6.65779e+00 4.46740e+00 863 2004 2 1.05170e+01 5.34309e+00 448 2004 3 1.78750e+01 6.81779e+00 802 2004 4 2.55432e+01 3.78116e+00 512 2004 5 2.66800e+01 4.20908e+00 514 2004 6 2.58842e+01 8.91871e+00 496 2004 7 1.50055e+01 7.60213e+00 447 2004 8 1.47669e+01 7.99625e+00 346 2004 9 6.12902e+00 7.12049e+00 256 2004 10 6.22936e+00 5.21700e+00 959 2004 11 5.39810e+00 4.97048e+00 788 2004 12 2.03931e+00 2.36259e+00 393 2005 1 6.00905e+00 5.94652e+00 704 2005 2 3.52735e+00 2.11222e+00 704 2005 3 3.81522e+00 2.87898e+00 441 2005 4 1.47604e+01 5.94844e+00 639 2005 5 2.12403e+01 6.47118e+00 640 2005 6 1.81962e+01 8.84202e+00 292 2005 7 1.26343e+01 1.04807e+01 512 2005 8 1.57379e+01 1.28366e+01 548 2005 9 5.61086e+00 4.66145e+00 449 2005 10 4.66566e+00 4.04846e+00 680 2005 11 4.60908e+00 3.60922e+00 900 2005 12 2.24085e+00 2.39989e+00 824 2006 1 2.46901e+00 2.23188e+00 466 2006 2 4.56693e+00 5.72241e+00 768 2006 3 1.95376e+01 8.24986e+00 960 2006 4 2.65198e+01 8.60798e+00 660 2006 5 2.55236e+01 8.73154e+00 557 2006 6 1.91906e+01 7.44280e+00 508 2006 7 2.44116e+01 3.99767e+00 277 2006 8 1.64935e+01 8.93925e+00 379 2006 9 5.96200e+00 5.90492e+00 645 2006 10 3.15007e+00 2.15808e+00 1100 2006 11 5.50031e+00 6.27753e+00 744 2006 12 7.48130e+00 7.69413e+00 440 2007 1 1.33648e+01 6.72495e+00 488 2007 2 2.17251e+01 5.66749e+00 454 2007 3 2.34845e+01 8.80665e+00 960 2007 4 2.52526e+01 5.91312e+00 688 2007 5 2.58033e+01 5.31997e+00 505 2007 6 2.42215e+01 5.66523e+00 336 2007 7 1.96463e+01 3.61691e+00 429 2007 8 1.64568e+01 3.84293e+00 578 2007 9 1.47616e+01 6.21492e+00 787 2007 10 1.37470e+01 6.72419e+00 763 2007 11 1.48752e+01 4.94299e+00 1024 2007 12 1.50893e+01 7.79986e+00 1116 2008 1 7.32456e+00 9.32050e+00 576 2008 2 1.88307e+01 1.10029e+01 720 2008 3 1.38660e+01 8.98680e+00 350 2008 4 2.47640e+01 6.17634e+00 766 2008 5 2.10340e+01 4.74580e+00 567 2008 6 1.98631e+01 4.19247e+00 614 2008 7 1.92235e+01 2.85457e+00 289 2008 8 1.81908e+01 9.41431e+00 372 2008 9 1.38436e+01 6.64778e+00 609 2008 10 1.27872e+01 7.70756e+00 986 2008 11 9.72151e+00 5.23836e+00 1216 2008 12 9.89831e+00 6.65501e+00 989 2009 1 8.27638e+00 8.38193e+00 840 2009 2 9.89064e+00 8.02350e+00 640 2009 3 2.07269e+01 5.38280e+00 916 2009 4 2.01908e+01 1.12810e+01 512 2009 5 2.87433e+01 4.69399e+00 491 2009 6 2.46762e+01 7.97735e+00 443 2009 7 1.48559e+01 4.46770e+00 272 2009 8 2.08432e+01 4.28758e+00 522 2009 9 1.60871e+01 7.07813e+00 703 2009 10 1.20864e+01 6.89236e+00 1011 2009 11 7.50327e+00 4.13746e+00 640 2009 12 4.83156e+00 8.02107e+00 204 2010 1 5.66787e+00 4.85551e+00 636 2010 2 5.37111e+00 3.91239e+00 273 2010 3 4.54429e+00 4.58315e+00 709 2010 4 2.13847e+01 6.05542e+00 832 2010 5 2.65399e+01 5.44139e+00 586 2010 6 2.62811e+01 5.44781e+00 559 2010 7 2.24189e+01 3.55379e+00 128 2010 8 1.41752e+01 4.90230e+00 406 2010 9 1.66627e+01 5.94931e+00 767 2010 10 2.03197e+01 7.15864e+00 1472 2010 11 1.36367e+01 7.16927e+00 1218 2010 12 1.81503e+00 3.40251e+00 791 2011 1 1.14435e+01 8.99420e+00 652 2011 2 2.45674e+01 7.19252e+00 828 2011 3 2.68265e+01 6.02063e+00 1090 2011 4 2.68154e+01 8.22825e+00 896 2011 5 2.68228e+01 4.85593e+00 824 2011 6 2.47606e+01 4.13037e+00 512 2011 7 1.91327e+01 3.27827e+00 320 2011 8 1.77859e+01 6.96253e+00 262 2011 9 1.24707e+01 2.47825e+00 194 2011 10 1.08747e+01 5.38182e+00 741 2011 11 1.16107e+01 7.54895e+00 1024 2011 12 1.52077e+01 8.21299e+00 1216 2012 1 1.40628e+01 7.91678e+00 853 2012 2 2.20980e+01 9.07813e+00 595 2012 3 2.78342e+01 6.99816e+00 1180 2012 4 2.52369e+01 4.47132e+00 698 2012 5 2.82009e+01 3.71788e+00 406 2012 6 2.25835e+01 5.47602e+00 178 2012 7 1.27421e+01 3.46928e+00 349 2012 8 1.10601e+01 5.53568e+00 314 2012 9 1.06251e+01 3.61134e+00 436 2012 10 1.45975e+01 7.30054e+00 614 2012 11 4.68955e+00 2.71615e+00 837 2012 12 5.76886e+00 4.41926e+00 674 2013 1 7.95060e+00 5.02691e+00 1020 2013 2 1.07845e+01 7.73737e+00 849 2013 3 1.16922e+01 8.00147e+00 576 2013 4 2.14664e+01 5.54709e+00 575 2013 5 2.42565e+01 7.07410e+00 760 2013 6 2.00908e+01 5.82003e+00 407 2013 7 1.18197e+01 6.72407e+00 320 2013 8 2.18483e+01 1.08363e+01 520 2013 9 1.80929e+01 8.21723e+00 956 2013 10 1.52878e+01 7.46698e+00 943 2013 11 1.15266e+01 6.09441e+00 352 2013 12 1.13677e+01 3.16776e+00 582 2014 1 5.24901e+00 4.67930e+00 595 2014 2 1.10599e+01 6.10611e+00 882 2014 3 1.31592e+01 7.38341e+00 640 2014 4 2.29209e+01 4.00738e+00 619 2014 5 2.34892e+01 4.45769e+00 704 2014 6 2.35681e+01 4.49568e+00 638 2014 7 2.25223e+01 7.33919e+00 449 2014 8 1.39370e+01 4.98517e+00 631 2014 9 1.45494e+01 3.77978e+00 208 2014 10 9.94139e+00 5.27045e+00 1124 2014 11 5.90492e+00 5.54603e+00 1016 2014 12 9.12833e+00 4.89670e+00 733 2015 1 8.04299e+00 6.53686e+00 680 2015 2 9.63103e+00 7.80773e+00 678 2015 3 2.36534e+01 6.71791e+00 1088 2015 4 2.69941e+01 1.13980e+01 549 2015 5 2.35928e+01 5.56779e+00 768 2015 6 2.75172e+01 5.41462e+00 469 2015 7 9.53014e+00 3.80655e+00 285 2015 8 1.52850e+01 6.38233e+00 456 2015 9 1.25013e+01 7.00160e+00 521 2015 10 1.25171e+01 5.68347e+00 723 2015 11 8.14663e+00 4.95365e+00 981 2015 12 1.05610e+01 6.74909e+00 530 2016 1 2.28914e+00 2.74121e+00 405 2016 2 8.25276e+00 6.65195e+00 725 2016 3 8.43939e+00 4.84121e+00 511 2016 4 1.92472e+01 5.07637e+00 539 2016 5 2.57911e+01 4.50301e+00 896 2016 6 2.23779e+01 5.59400e+00 390 2016 7 1.70726e+01 5.17194e+00 377 2016 8 1.66530e+01 5.20045e+00 594 2016 9 1.42625e+01 6.81200e+00 851 2016 10 1.18184e+01 7.17942e+00 963 2016 11 1.67005e+01 5.63048e+00 931 2016 12 1.37085e+01 6.80543e+00 1028 2017 1 1.51922e+01 7.92103e+00 728 2017 2 1.26100e+01 8.24647e+00 1115 2017 3 2.12936e+01 7.00315e+00 992 2017 4 2.16949e+01 7.48797e+00 724 2017 5 2.22190e+01 6.71113e+00 558 2017 6 1.93324e+01 6.96633e+00 384 2017 7 1.42501e+01 5.45563e+00 276 2017 8 1.08165e+01 5.76759e+00 642 2017 9 1.16696e+01 5.56858e+00 868 2017 10 6.31940e+00 6.69898e+00 672 2017 11 1.17868e+01 5.90311e+00 871 2017 12 1.24926e+01 7.54417e+00 1037 2018 1 4.12123e+00 4.27099e+00 766 2018 2 1.69377e+01 4.03395e+00 704 2018 3 1.29261e+01 9.85794e+00 1069 2018 4 2.31806e+01 5.63677e+00 957 2018 5 2.92131e+01 4.80405e+00 448 2018 6 2.66558e+01 5.90675e+00 320 2018 7 1.93750e+01 5.18471e+00 470 2018 8 1.03236e+01 6.35210e+00 713 2018 9 9.56740e+00 1.07542e+01 681 2018 10 4.25436e+00 4.74756e+00 1133 2018 11 2.88164e+00 6.58692e+00 497 2018 12 7.54241e+00 5.74918e+00 668 2019 1 5.81928e+00 6.74824e+00 659 2019 2 1.44076e+01 8.49855e+00 832 2019 3 2.03590e+01 8.93884e+00 878 2019 4 1.78956e+01 9.85187e+00 444 2019 5 2.82311e+01 5.49872e+00 843 2019 6 2.42674e+01 5.09735e+00 444 2019 7 1.83286e+01 5.65321e+00 542 2019 8 1.53479e+01 1.23317e+01 336 2019 9 1.63847e+01 6.30806e+00 773 2019 10 2.11761e+01 5.39320e+00 777 2019 11 1.15408e+01 4.68852e+00 477 2019 12 7.94448e+00 8.35408e+00 192 2020 1 9.11908e+00 6.70441e+00 768 2020 2 1.02789e+01 8.87897e+00 515 2020 3 2.42393e+01 8.98774e+00 711 2020 4 2.22413e+01 1.03172e+01 443 2020 5 2.71499e+01 3.93416e+00 762 2020 6 2.46468e+01 4.83725e+00 448 2020 7 2.27466e+01 2.94148e+00 128 2020 8 1.36454e+01 5.06070e+00 310 2020 9 1.11291e+01 6.61524e+00 356 2020 10 7.12288e+00 2.20602e+00 585 2020 11 6.30248e+00 5.44651e+00 773 2020 12 5.62243e+00 4.42276e+00 768 2021 1 8.25928e+00 6.97893e+00 512 2021 2 1.36038e+01 6.40577e+00 514 2021 3 2.06336e+01 7.21050e+00 832 2021 4 2.25072e+01 4.72581e+00 750 2021 5 2.13738e+01 6.52841e+00 746 2021 6 2.50175e+01 6.84566e+00 251 2021 7 1.42452e+01 6.57392e+00 413 2021 8 1.32337e+01 7.77178e+00 510 2021 9 6.06706e+00 4.23087e+00 611 2021 10 7.72970e+00 7.17857e+00 1158 2021 11 5.72937e+00 3.90819e+00 882 2021 12 8.11991e+00 3.71236e+00 891 2022 1 4.74114e+00 4.49484e+00 639 2022 2 1.18556e+01 8.09632e+00 1149 2022 3 1.82728e+01 7.62786e+00 798 2022 4 2.09500e+01 6.93739e+00 320 2022 5 2.47137e+01 5.57184e+00 593 2022 6 2.84443e+01 6.14919e+00 301 2022 7 1.99576e+01 3.48155e+00 469 2022 8 1.58693e+01 3.58566e+00 269 2022 9 1.53916e+01 9.03485e+00 514 2022 10 9.43133e+00 6.94654e+00 1008 2022 11 6.82600e+00 3.88211e+00 646 2022 12 4.69412e+00 4.51677e+00 650 2023 1 1.09818e+01 6.41300e+00 951 2023 2 1.38511e+01 6.66172e+00 960 2023 3 1.54049e+01 8.82656e+00 896 2023 4 2.29784e+01 9.92555e+00 431 2023 5 2.10278e+01 8.81597e+00 504 2023 6 1.73392e+01 4.27387e+00 496 2023 7 1.79644e+01 4.79174e+00 404 2023 8 1.89650e+01 2.95947e+00 314 2023 9 1.07394e+01 7.68080e+00 792 2023 10 8.25215e+00 4.68593e+00 621 2023 11 1.00208e+01 7.64505e+00 693 2023 12 4.91753e+00 5.78155e+00 328 2024 1 1.75967e+00 2.57839e+00 493 2024 2 1.06591e+01 7.71060e+00 704 2024 3 1.81407e+01 7.21238e+00 457 2024 4 nan nan 0