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 1.50654e+01 3.33928e+00 234 2002 8 2.09986e+01 7.66494e+00 432 2002 9 1.68651e+01 8.50124e+00 443 2002 10 1.41405e+01 6.97090e+00 824 2002 11 1.01365e+01 6.40404e+00 1024 2002 12 6.09169e+00 3.62537e+00 714 2003 1 3.75986e+00 3.11800e+00 959 2003 2 7.08814e+00 3.78309e+00 640 2003 3 1.23348e-01 1.56418e-01 134 2003 4 2.00871e+01 2.49898e+01 118 2003 5 3.41791e+00 1.33617e+00 128 2003 6 2.14412e+01 2.49293e+01 202 2003 7 8.04266e+00 1.62261e+00 64 2003 8 4.80390e+00 5.25880e+00 193 2003 9 1.68807e+01 1.30186e+01 465 2003 10 1.20626e+01 9.55919e+00 911 2003 11 1.20795e+01 6.78798e+00 1059 2003 12 4.66575e+00 4.39141e+00 934 2004 1 6.76310e+00 5.42865e+00 674 2004 2 1.14737e+01 2.85995e+00 192 2004 3 4.27520e+00 4.78307e+00 728 2004 4 7.65699e+00 3.72977e+00 580 2004 5 7.27292e+00 4.00761e+00 492 2004 6 1.42690e+01 5.73227e+00 375 2004 7 7.76184e+00 5.74028e+00 442 2004 8 1.37656e+01 8.06087e+00 385 2004 9 9.42699e+00 1.03479e+01 276 2004 10 3.86480e+00 9.55164e+00 220 2004 11 4.64921e+00 1.08725e+01 421 2004 12 2.47098e-01 4.05437e-01 617 2005 1 7.28419e+00 1.09426e+01 739 2005 2 1.81257e+00 1.47708e+00 514 2005 3 2.62699e+00 2.23667e+00 704 2005 4 1.23273e+01 1.42958e+01 336 2005 5 1.23786e+01 1.34617e+01 539 2005 6 1.07120e+01 1.23785e+01 389 2005 7 8.39184e+00 7.89496e+00 350 2005 8 5.70866e+00 6.33528e+00 128 2005 9 9.49769e+00 6.88978e+00 363 2005 10 9.97806e+00 8.29256e+00 1101 2005 11 8.24608e+00 5.53167e+00 1196 2005 12 8.16892e+00 4.63877e+00 1024 2006 1 5.42952e+00 4.44069e+00 896 2006 2 2.85416e+00 3.78913e+00 832 2006 3 4.32865e+00 8.98798e+00 815 2006 4 2.03790e+00 1.95335e+00 410 2006 5 1.22810e+01 7.39133e+00 693 2006 6 1.03684e+01 7.87319e+00 348 2006 7 1.17024e+01 1.10057e+01 507 2006 8 1.21612e+01 6.88586e+00 350 2006 9 1.17639e+01 7.68327e+00 703 2006 10 1.26457e+01 6.56130e+00 960 2006 11 1.29642e+01 6.98686e+00 904 2006 12 1.30014e+01 8.77187e+00 510 2007 1 1.66439e+01 5.75309e+00 576 2007 2 1.52701e+01 5.87163e+00 790 2007 3 1.56094e+01 4.30403e+00 1269 2007 4 1.06739e+01 4.57130e+00 767 2007 5 1.56534e+01 2.68535e+00 308 2007 6 1.35364e+01 4.79905e+00 470 2007 7 1.08526e+01 5.76576e+00 450 2007 8 9.22471e+00 3.92880e+00 451 2007 9 1.99074e+01 6.91182e+00 485 2007 10 2.12120e+01 5.12600e+00 687 2007 11 2.04914e+01 4.60501e+00 1087 2007 12 2.04316e+01 9.09070e+00 768 2008 1 2.08177e+01 7.24603e+00 960 2008 2 2.05895e+01 5.57296e+00 1159 2008 3 1.19131e+01 8.40057e+00 896 2008 4 7.08433e+00 1.31313e+01 441 2008 5 6.00388e+00 8.34585e+00 630 2008 6 1.51618e+01 1.59475e+01 308 2008 7 1.31952e+01 1.00633e+01 399 2008 8 8.35053e+00 2.23286e+00 224 2008 9 8.83083e+00 8.84715e+00 629 2008 10 8.20721e+00 4.98363e+00 970 2008 11 5.10389e+00 3.19653e+00 900 2008 12 4.93961e+00 4.44577e+00 829 2009 1 5.64640e+00 4.18600e+00 640 2009 2 5.99517e+00 2.61300e+00 973 2009 3 1.20265e+01 6.02050e+00 1020 2009 4 5.42182e+00 4.63524e+00 707 2009 5 7.10677e+00 1.02605e+01 138 2009 6 1.00879e+01 1.07870e+01 438 2009 7 1.86283e+01 1.43850e+01 240 2009 8 7.11781e+00 4.43063e+00 444 2009 9 1.63192e+01 1.43170e+01 641 2009 10 1.15736e+01 6.16248e+00 867 2009 11 1.05362e+01 4.60112e+00 618 2009 12 5.88059e+00 4.33606e+00 256 2010 1 1.87879e+00 1.55849e+00 905 2010 2 2.78866e+00 5.80903e+00 811 2010 3 5.04822e-01 1.00096e+00 726 2010 4 1.95679e+00 3.58513e+00 327 2010 5 1.55016e+01 2.04149e+01 432 2010 6 1.18940e+01 7.66215e+00 581 2010 7 1.05999e+01 1.12674e+01 448 2010 8 1.52363e+01 5.85920e+00 236 2010 9 1.21625e+01 8.58478e+00 703 2010 10 6.92050e+00 5.66794e+00 1585 2010 11 1.16603e+01 6.49559e+00 1140 2010 12 1.12952e+01 6.32971e+00 1088 2011 1 1.37108e+01 4.55408e+00 792 2011 2 1.40724e+01 4.13948e+00 576 2011 3 1.13002e+01 3.17696e+00 885 2011 4 6.66463e+00 5.43127e+00 832 2011 5 1.05721e+01 7.96741e+00 623 2011 6 6.92339e+00 4.78578e+00 256 2011 7 7.63171e+00 5.82394e+00 384 2011 8 1.40856e+01 7.22210e+00 762 2011 9 1.49722e+01 8.17264e+00 657 2011 10 1.63768e+01 7.20299e+00 1045 2011 11 2.15425e+01 6.26447e+00 1021 2011 12 2.52256e+01 4.36730e+00 896 2012 1 1.68506e+01 8.30000e+00 1208 2012 2 2.15578e+01 5.49380e+00 308 2012 3 1.80867e+01 6.27396e+00 1063 2012 4 1.47325e+01 6.73399e+00 903 2012 5 1.60606e+01 4.77252e+00 517 2012 6 8.15372e+00 5.54242e+00 324 2012 7 3.33565e+00 1.40373e+01 101 2012 8 1.64058e+00 1.35837e+00 128 2012 9 3.11201e+00 4.82474e+00 636 2012 10 6.34364e+00 1.36236e+01 742 2012 11 3.15016e+00 4.37364e+00 1091 2012 12 5.50040e+00 2.95638e+00 640 2013 1 1.23059e+01 8.72938e+00 640 2013 2 1.24013e+01 7.19553e+00 701 2013 3 5.54665e+00 4.28325e+00 654 2013 4 1.10436e+01 1.07672e+01 333 2013 5 4.75019e+00 4.21602e+00 549 2013 6 1.91664e+01 1.83982e+01 464 2013 7 7.60772e+00 2.44207e+00 192 2013 8 3.40454e+01 2.55285e+01 111 2013 9 8.91708e+00 1.41098e+01 843 2013 10 1.15260e+01 1.31263e+01 723 2013 11 9.41001e+00 5.87695e+00 472 2013 12 1.46103e+01 7.86587e+00 806 2014 1 7.51021e+00 4.50600e+00 687 2014 2 4.42946e+00 3.01112e+00 726 2014 3 3.55944e+00 8.78262e+00 673 2014 4 4.63754e-01 1.23653e+00 211 2014 5 2.28135e-11 5.69407e-11 8 2014 6 1.44049e+01 7.76619e+00 159 2014 7 7.87932e+00 9.83476e+00 512 2014 8 1.32754e+01 6.36742e+00 340 2014 9 2.40152e+01 1.19120e+01 430 2014 10 9.59250e+00 7.14330e+00 1403 2014 11 8.69781e+00 5.26062e+00 1021 2014 12 1.62218e+01 7.70068e+00 944 2015 1 1.77321e+01 8.51585e+00 712 2015 2 7.23916e+00 6.67433e+00 768 2015 3 4.37297e+00 5.57523e+00 367 2015 4 1.08136e+00 8.20737e-01 96 2015 5 1.12248e+01 1.44950e+01 679 2015 6 1.04504e+01 1.03087e+01 561 2015 7 2.32464e+01 1.45104e+01 233 2015 8 6.42539e+00 4.11380e+00 549 2015 9 9.28945e+00 5.44355e+00 362 2015 10 6.26760e+00 3.89066e+00 874 2015 11 4.51398e+00 4.76400e+00 687 2015 12 9.98714e+00 5.76212e+00 527 2016 1 1.03515e+01 5.11981e+00 644 2016 2 5.30760e+00 4.53312e+00 1216 2016 3 3.63994e+00 2.31571e+00 696 2016 4 7.32286e+00 9.72521e+00 458 2016 5 4.71091e+00 4.77049e+00 500 2016 6 8.46920e+00 7.93772e+00 500 2016 7 5.57999e+00 5.21286e+00 651 2016 8 5.87641e+00 4.31714e+00 621 2016 9 9.87606e+00 1.51733e+01 894 2016 10 6.71044e+00 4.86110e+00 677 2016 11 1.31526e+01 7.63518e+00 958 2016 12 1.65498e+01 5.56370e+00 810 2017 1 1.59433e+01 7.27076e+00 713 2017 2 1.10896e+01 4.53257e+00 1074 2017 3 1.06063e+01 4.48068e+00 928 2017 4 9.63827e+00 5.28986e+00 773 2017 5 9.39183e+00 4.10303e+00 429 2017 6 1.79519e+01 1.35204e+01 331 2017 7 1.76768e+01 6.44274e+00 128 2017 8 1.27422e+01 1.36669e+01 485 2017 9 8.59427e+00 8.06583e+00 455 2017 10 2.01978e+00 2.97188e+00 548 2017 11 1.10471e+01 9.32053e+00 1125 2017 12 1.26861e+01 6.86014e+00 714 2018 1 1.10443e+01 4.03197e+00 892 2018 2 9.62698e+00 6.51499e+00 493 2018 3 5.73893e+00 4.23142e+00 721 2018 4 5.13976e+00 5.81035e+00 613 2018 5 7.12079e+00 6.71422e+00 543 2018 6 5.97574e+00 6.03238e+00 382 2018 7 2.30985e+01 1.39299e+01 315 2018 8 6.24650e+00 9.49099e+00 351 2018 9 1.69759e+01 1.49810e+01 893 2018 10 1.12658e+01 1.07809e+01 1024 2018 11 2.64291e+00 1.83167e+00 256 2018 12 2.01495e+00 2.22890e+00 707 2019 1 4.94211e-01 2.14275e+00 640 2019 2 2.12628e+01 2.20690e+01 185 2019 3 2.07036e+00 3.68180e+00 615 2019 4 1.13743e+00 6.30592e-01 261 2019 5 5.84670e+00 4.98028e+00 773 2019 6 7.49264e+00 6.57676e+00 276 2019 7 9.27399e+00 7.96206e+00 410 2019 8 1.06390e+01 1.67518e+01 702 2019 9 7.22664e+00 8.44732e+00 579 2019 10 9.44636e+00 6.19167e+00 758 2019 11 1.06830e+01 7.81144e+00 765 2019 12 9.70265e+00 5.71817e+00 384 2020 1 8.08395e+00 3.10791e+00 640 2020 2 1.04828e+01 6.15127e+00 599 2020 3 8.46649e+00 6.94282e+00 771 2020 4 6.14089e+00 6.48861e+00 552 2020 5 6.41158e+00 6.29339e+00 645 2020 6 3.87893e+00 4.82896e+00 440 2020 7 1.66331e+01 1.68052e+01 332 2020 8 5.18855e+00 6.18287e+00 154 2020 9 9.77260e+00 2.07399e+01 221 2020 10 9.21706e+00 1.26706e+01 492 2020 11 7.26392e+00 1.14032e+01 844 2020 12 4.08146e+00 4.54742e+00 518 2021 1 2.35369e+00 2.91875e+00 535 2021 2 1.21294e+00 1.21354e+00 574 2021 3 1.99666e+00 3.44749e+00 459 2021 4 2.45874e+00 2.67424e+00 133 2021 5 3.81537e+00 6.17776e+00 493 2021 6 9.00419e+00 6.30342e+00 217 2021 7 1.58340e+01 1.26321e+01 103 2021 8 6.48882e+00 9.46385e+00 130 2021 9 8.01857e+00 1.31000e+01 435 2021 10 5.59826e+00 7.20524e+00 640 2021 11 2.58075e+00 5.45046e+00 624 2021 12 7.01699e+00 1.17942e+01 616 2022 1 2.04215e+00 2.04318e+00 851 2022 2 4.06027e+00 3.48996e+00 771 2022 3 3.22719e+00 3.90239e+00 681 2022 4 3.27388e+00 2.22880e+00 94 2022 5 9.00399e+00 1.02704e+01 448 2022 6 1.09281e+01 7.71769e+00 518 2022 7 2.60868e+01 1.53308e+01 192 2022 8 1.32262e+01 1.08626e+01 498 2022 9 1.86593e+01 8.97995e+00 325 2022 10 4.14080e+00 4.77482e+00 1309 2022 11 1.16357e+01 4.76415e+00 448 2022 12 1.09535e+01 6.54369e+00 1118 2023 1 1.19565e+01 5.40693e+00 768 2023 2 1.37092e+01 4.46441e+00 545 2023 3 1.07172e+01 6.12818e+00 768 2023 4 1.06583e+01 9.00093e+00 317 2023 5 1.15402e+01 8.81689e+00 448 2023 6 1.92106e+01 4.06027e+00 295 2023 7 1.57174e+01 1.13078e+01 374 2023 8 1.80677e+01 1.34933e+01 551 2023 9 9.51459e+00 1.19091e+01 543 2023 10 6.95739e+00 6.52111e+00 599 2023 11 7.65648e+00 8.99155e+00 626 2023 12 4.70789e+00 3.10676e+00 316 2024 1 1.04807e+00 1.28883e+00 553 2024 2 4.62705e+00 4.10618e+00 384 2024 3 7.05830e-01 6.56024e-01 255 2024 4 nan nan 0