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 3.79060e+00 4.28748e-01 322 2002 8 4.10597e+00 3.65983e-01 344 2002 9 3.49237e+00 7.60716e-01 464 2002 10 3.15306e+00 6.82810e-01 1178 2002 11 2.66326e+00 7.88499e-01 933 2002 12 2.47171e+00 4.09189e-01 512 2003 1 2.33492e+00 7.48309e-01 613 2003 2 3.47185e+00 7.03149e-01 640 2003 3 3.65799e+00 8.66418e-01 352 2003 4 3.62876e+00 7.17761e-01 734 2003 5 3.81638e+00 2.88357e-01 455 2003 6 4.02120e+00 5.30868e-01 186 2003 7 3.73176e+00 5.23949e-01 382 2003 8 4.08662e+00 6.42504e-01 484 2003 9 3.51670e+00 1.02806e+00 468 2003 10 3.29394e+00 9.00891e-01 1081 2003 11 2.69118e+00 1.02301e+00 1009 2003 12 2.53282e+00 9.71398e-01 855 2004 1 3.09275e+00 8.30769e-01 981 2004 2 3.08745e+00 1.02373e+00 688 2004 3 4.23029e+00 6.53587e-01 1266 2004 4 4.73168e+00 4.04920e-01 384 2004 5 4.76426e+00 3.22224e-01 511 2004 6 4.59213e+00 7.94294e-01 572 2004 7 3.86290e+00 4.09059e-01 498 2004 8 3.25204e+00 5.56928e-01 610 2004 9 1.76259e+00 3.78186e-01 292 2004 10 2.43428e+00 8.41538e-01 985 2004 11 3.00133e+00 1.40590e+00 990 2004 12 1.98081e+00 8.09960e-01 651 2005 1 2.58956e+00 8.96860e-01 949 2005 2 2.66952e+00 6.81774e-01 958 2005 3 2.58819e+00 7.92455e-01 320 2005 4 2.64872e+00 4.14919e-01 576 2005 5 4.18793e+00 4.07962e-01 469 2005 6 3.87463e+00 3.34407e-01 128 2005 7 3.29059e+00 8.79996e-01 539 2005 8 3.59509e+00 6.10047e-01 571 2005 9 2.65485e+00 1.18152e+00 581 2005 10 2.43167e+00 1.19281e+00 655 2005 11 2.18930e+00 6.73947e-01 1049 2005 12 1.71167e+00 4.17153e-01 704 2006 1 2.05311e+00 6.69720e-01 534 2006 2 2.82955e+00 9.32782e-01 676 2006 3 3.79653e+00 7.20414e-01 942 2006 4 4.84403e+00 5.64477e-01 607 2006 5 5.00204e+00 5.77774e-01 704 2006 6 4.37655e+00 3.95557e-01 705 2006 7 3.96557e+00 3.53040e-01 512 2006 8 3.66989e+00 9.21600e-01 436 2006 9 3.50684e+00 6.52404e-01 704 2006 10 2.43465e+00 6.62712e-01 1016 2006 11 2.74939e+00 6.98536e-01 616 2006 12 3.41458e+00 5.22125e-01 485 2007 1 2.84669e+00 7.68201e-01 555 2007 2 3.54775e+00 6.47333e-01 512 2007 3 3.77528e+00 8.73931e-01 666 2007 4 4.02932e+00 8.73190e-01 486 2007 5 5.22217e+00 7.58085e-01 250 2007 6 4.36574e+00 5.23017e-01 501 2007 7 4.07217e+00 4.97270e-01 653 2007 8 3.84807e+00 5.61579e-01 737 2007 9 3.36821e+00 3.65403e-01 829 2007 10 3.06591e+00 6.12481e-01 549 2007 11 4.18916e+00 8.76193e-01 1038 2007 12 3.54530e+00 9.05923e-01 1324 2008 1 3.27754e+00 1.15510e+00 581 2008 2 3.92830e+00 9.74435e-01 873 2008 3 3.63446e+00 8.02960e-01 526 2008 4 4.44168e+00 1.00911e+00 883 2008 5 4.39584e+00 4.67843e-01 582 2008 6 4.45502e+00 4.02315e-01 511 2008 7 4.15197e+00 4.23268e-01 370 2008 8 2.99214e+00 6.77638e-01 339 2008 9 3.22956e+00 6.17570e-01 675 2008 10 2.54632e+00 7.59712e-01 980 2008 11 2.90495e+00 9.09972e-01 1270 2008 12 2.52549e+00 8.91402e-01 1268 2009 1 3.22791e+00 1.06652e+00 832 2009 2 3.17446e+00 1.06902e+00 774 2009 3 4.32890e+00 9.57432e-01 647 2009 4 3.78732e+00 9.10940e-01 432 2009 5 4.72950e+00 7.09348e-01 640 2009 6 4.54524e+00 2.41580e-01 320 2009 7 3.72921e+00 5.97649e-01 444 2009 8 3.83494e+00 2.75927e-01 440 2009 9 3.58361e+00 4.76948e-01 713 2009 10 2.93183e+00 1.22456e+00 1101 2009 11 2.94010e+00 8.84347e-01 800 2009 12 2.27773e+00 5.32854e-01 465 2010 1 1.92279e+00 9.41403e-01 644 2010 2 2.17005e+00 3.39726e-01 150 2010 3 3.57500e+00 1.08607e+00 465 2010 4 4.33326e+00 5.78036e-01 473 2010 5 4.40316e+00 4.80271e-01 666 2010 6 4.93085e+00 5.50733e-01 884 2010 7 4.00039e+00 4.83373e-01 543 2010 8 3.40429e+00 5.48820e-01 576 2010 9 2.92151e+00 5.15531e-01 561 2010 10 3.52376e+00 3.42810e-01 1030 2010 11 3.64255e+00 7.97344e-01 1088 2010 12 1.68001e+00 7.15282e-01 762 2011 1 2.13510e+00 8.18451e-01 617 2011 2 4.04814e+00 9.37453e-01 1001 2011 3 4.29508e+00 6.89313e-01 1135 2011 4 3.90079e+00 7.25470e-01 726 2011 5 4.64577e+00 5.44977e-01 532 2011 6 3.95773e+00 6.62724e-01 524 2011 7 3.75076e+00 4.79606e-01 436 2011 8 3.27596e+00 8.03328e-01 384 2011 9 2.68844e+00 5.08260e-01 535 2011 10 1.99005e+00 4.87178e-01 360 2011 11 2.13276e+00 6.19918e-01 724 2011 12 2.52046e+00 7.85113e-01 1205 2012 1 3.13702e+00 9.25686e-01 1208 2012 2 3.89846e+00 7.98997e-01 616 2012 3 4.04838e+00 7.34139e-01 1151 2012 4 4.43066e+00 5.60068e-01 677 2012 5 4.52108e+00 4.91445e-01 472 2012 6 3.72523e+00 5.21324e-01 285 2012 7 3.89447e+00 5.98378e-01 444 2012 8 3.72015e+00 3.31498e-01 430 2012 9 3.41000e+00 7.90628e-01 478 2012 10 2.54641e+00 6.02743e-01 839 2012 11 2.78413e+00 7.42856e-01 817 2012 12 2.47457e+00 9.03946e-01 766 2013 1 2.81223e+00 6.00199e-01 969 2013 2 2.41757e+00 6.74892e-01 889 2013 3 3.16119e+00 7.72377e-01 832 2013 4 4.05332e+00 8.23362e-01 672 2013 5 4.23202e+00 4.48555e-01 640 2013 6 4.14308e+00 7.61870e-01 570 2013 7 3.26660e+00 4.28393e-01 341 2013 8 3.18606e+00 1.11850e+00 377 2013 9 3.64001e+00 1.12220e+00 753 2013 10 3.64377e+00 8.34660e-01 886 2013 11 2.65328e+00 8.86756e-01 306 2013 12 3.27218e+00 3.70999e-01 640 2014 1 3.01472e+00 1.00297e+00 665 2014 2 3.60872e+00 9.37619e-01 775 2014 3 3.24849e+00 8.87032e-01 805 2014 4 4.21525e+00 8.78736e-01 431 2014 5 3.50439e+00 6.56668e-01 572 2014 6 2.96404e+00 4.44818e-01 446 2014 7 3.91371e+00 4.93025e-01 372 2014 8 3.08211e+00 4.16188e-01 433 2014 9 3.26482e+00 6.91033e-01 447 2014 10 3.11674e+00 9.12723e-01 1162 2014 11 2.42949e+00 7.62232e-01 872 2014 12 3.68270e+00 6.07819e-01 802 2015 1 3.11929e+00 1.02835e+00 576 2015 2 2.61693e+00 1.06458e+00 731 2015 3 4.38125e+00 6.84181e-01 1147 2015 4 4.84781e+00 3.55957e-01 443 2015 5 4.10822e+00 5.89563e-01 917 2015 6 4.49736e+00 3.55118e-01 605 2015 7 3.68506e+00 2.53317e-01 256 2015 8 3.31577e+00 5.08886e-01 448 2015 9 3.25442e+00 5.30204e-01 315 2015 10 3.16357e+00 9.21392e-01 622 2015 11 2.89260e+00 6.60418e-01 968 2015 12 3.37669e+00 4.27101e-01 407 2016 1 2.84800e+00 8.66775e-01 384 2016 2 2.20142e+00 4.83624e-01 712 2016 3 2.72618e+00 7.68414e-01 497 2016 4 3.30518e+00 5.79411e-01 580 2016 5 4.41193e+00 4.14334e-01 826 2016 6 4.23480e+00 5.73604e-01 532 2016 7 3.88999e+00 5.20195e-01 571 2016 8 3.70973e+00 8.79981e-01 444 2016 9 3.67782e+00 6.91128e-01 779 2016 10 2.56349e+00 7.41723e-01 871 2016 11 2.53761e+00 6.82301e-01 970 2016 12 3.62781e+00 3.14350e-01 768 2017 1 2.88431e+00 1.10244e+00 806 2017 2 3.37113e+00 7.13334e-01 831 2017 3 3.97772e+00 9.99358e-01 893 2017 4 3.38048e+00 8.59224e-01 541 2017 5 4.10686e+00 7.88246e-01 707 2017 6 3.74072e+00 2.92722e-01 195 2017 7 4.10588e+00 4.34143e-01 320 2017 8 3.25515e+00 5.78667e-01 512 2017 9 2.54652e+00 1.28016e+00 930 2017 10 2.94719e+00 1.16268e+00 581 2017 11 2.08604e+00 8.20422e-01 932 2017 12 2.02889e+00 6.01053e-01 1247 2018 1 2.19179e+00 8.30008e-01 704 2018 2 3.39976e+00 5.75257e-01 966 2018 3 3.51902e+00 1.03394e+00 1086 2018 4 4.29284e+00 4.55674e-01 934 2018 5 4.47393e+00 5.57656e-01 286 2018 6 3.43116e+00 1.94962e-01 320 2018 7 3.17945e+00 9.95123e-01 418 2018 8 2.19131e+00 9.72813e-01 213 2018 9 2.71290e+00 1.13068e+00 677 2018 10 2.61519e+00 1.16641e+00 768 2018 11 1.62265e+00 7.23550e-01 515 2018 12 1.71102e+00 4.41238e-01 573 2019 1 2.07993e+00 6.64444e-01 555 2019 2 3.72573e+00 9.29946e-01 751 2019 3 3.70266e+00 1.06342e+00 887 2019 4 3.83168e+00 9.01287e-01 503 2019 5 5.31761e+00 3.74948e-01 682 2019 6 5.40758e+00 8.35996e-01 598 2019 7 4.50164e+00 3.34341e-01 384 2019 8 4.26520e+00 5.74094e-01 395 2019 9 3.53200e+00 5.32110e-01 348 2019 10 3.66444e+00 9.80664e-01 814 2019 11 1.98383e+00 4.76607e-01 738 2019 12 2.93355e+00 9.62366e-01 758 2020 1 3.18235e+00 1.06944e+00 832 2020 2 3.41073e+00 1.15549e+00 896 2020 3 4.40985e+00 1.01062e+00 1073 2020 4 4.31637e+00 1.05871e+00 448 2020 5 4.87893e+00 7.80449e-01 576 2020 6 4.17215e+00 2.52933e-01 436 2020 7 4.00025e+00 4.55053e-01 384 2020 8 3.97903e+00 3.64799e-01 425 2020 9 3.37822e+00 6.47770e-01 346 2020 10 3.69787e+00 6.99270e-01 588 2020 11 2.06167e+00 6.98804e-01 679 2020 12 1.59095e+00 6.24986e-01 600 2021 1 2.45256e+00 9.63486e-01 649 2021 2 3.03281e+00 6.76416e-01 850 2021 3 3.60445e+00 8.43659e-01 828 2021 4 4.24735e+00 4.76005e-01 829 2021 5 3.84420e+00 6.41576e-01 865 2021 6 4.68125e+00 6.52964e-01 128 2021 7 3.97749e+00 5.51188e-01 391 2021 8 3.90574e+00 4.90394e-01 330 2021 9 3.23294e+00 7.41871e-01 607 2021 10 3.09792e+00 9.94504e-01 915 2021 11 2.50218e+00 5.39938e-01 725 2021 12 2.87330e+00 6.44811e-01 1047 2022 1 2.57290e+00 5.62986e-01 701 2022 2 3.29786e+00 9.17589e-01 1054 2022 3 3.82523e+00 7.96157e-01 1013 2022 4 3.80492e+00 4.85440e-01 384 2022 5 4.11707e+00 4.87179e-01 576 2022 6 4.55401e+00 4.98058e-01 512 2022 7 5.07386e+00 7.88169e-01 322 2022 8 3.63266e+00 6.79878e-01 640 2022 9 2.81988e+00 6.59052e-01 486 2022 10 1.90726e+00 6.33643e-01 882 2022 11 1.79586e+00 5.63804e-01 768 2022 12 2.24823e+00 6.00160e-01 938 2023 1 2.40111e+00 8.77576e-01 802 2023 2 2.87558e+00 6.51404e-01 1152 2023 3 2.25135e+00 8.38833e-01 840 2023 4 3.99964e+00 7.96810e-01 527 2023 5 3.79531e+00 5.79772e-01 649 2023 6 4.02048e+00 4.78495e-01 388 2023 7 3.21907e+00 1.00914e+00 482 2023 8 3.57388e+00 5.31644e-01 343 2023 9 3.53140e+00 5.78143e-01 704 2023 10 2.93089e+00 9.84864e-01 854 2023 11 2.64106e+00 1.10820e+00 903 2023 12 3.28753e+00 1.50725e+00 315 2024 1 2.97570e+00 7.45498e-01 153 2024 2 3.60374e+00 8.88989e-01 821 2024 3 3.77055e+00 7.77583e-01 609 2024 4 nan nan 0