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 6.19473e+01 2.06083e-01 319 2002 8 5.82416e+01 8.41884e-01 246 2002 9 5.31153e+01 2.06861e+00 192 2002 10 4.45949e+01 1.94275e+00 709 2002 11 3.84404e+01 2.22579e+00 296 2002 12 3.41096e+01 4.77678e-01 542 2003 1 3.61364e+01 1.12640e+00 502 2003 2 4.35899e+01 2.73583e+00 605 2003 3 5.08512e+01 2.08102e+00 661 2003 4 5.84377e+01 4.02677e-01 317 2003 5 6.13373e+01 4.07132e-01 707 2003 6 6.20673e+01 1.68264e-01 346 2003 7 6.16148e+01 4.80337e-01 359 2003 8 5.91797e+01 1.19488e+00 380 2003 9 5.28459e+01 1.53429e+00 218 2003 10 4.56283e+01 2.09863e+00 470 2003 11 3.84788e+01 1.39504e+00 736 2003 12 3.40893e+01 1.88013e-01 348 2004 1 3.59138e+01 1.21800e+00 749 2004 2 4.31631e+01 2.43893e+00 823 2004 3 5.24747e+01 2.16357e+00 858 2004 4 5.80798e+01 1.44641e+00 605 2004 5 6.17454e+01 5.47480e-01 642 2004 6 6.20981e+01 2.41272e-01 676 2004 7 6.18208e+01 3.73482e-01 702 2004 8 5.81197e+01 8.81722e-01 259 2004 9 5.22441e+01 2.23484e+00 265 2004 10 4.50005e+01 2.23379e+00 566 2004 11 3.75272e+01 1.51475e+00 793 2004 12 3.44424e+01 5.40332e-01 610 2005 1 3.68072e+01 1.80405e+00 1145 2005 2 4.31049e+01 2.24030e+00 776 2005 3 5.18844e+01 2.29213e+00 593 2005 4 5.81235e+01 1.51011e+00 758 2005 5 6.16739e+01 4.71022e-01 305 2005 6 6.21598e+01 1.46649e-01 158 2005 7 6.16549e+01 6.17195e-01 448 2005 8 5.92285e+01 1.01545e+00 503 2005 9 5.37748e+01 1.52053e+00 492 2005 10 4.64493e+01 9.06310e-01 315 2005 11 3.89191e+01 1.30194e+00 610 2005 12 3.42664e+01 6.50455e-02 64 2006 1 3.61065e+01 1.77957e+00 281 2006 2 4.52381e+01 1.50114e+00 761 2006 3 5.09513e+01 2.02001e+00 829 2006 4 5.80930e+01 1.63617e+00 749 2006 5 6.12911e+01 7.49070e-01 549 2006 6 6.21734e+01 1.63308e-01 803 2006 7 6.18604e+01 3.48405e-01 133 2006 8 5.97756e+01 1.27740e+00 210 2006 9 5.31770e+01 1.48202e+00 219 2006 10 4.44419e+01 1.39977e+00 326 2006 11 3.67418e+01 1.43222e+00 422 2006 12 3.39298e+01 3.28352e-01 332 2007 1 3.59859e+01 8.75493e-01 740 2007 2 4.46149e+01 2.89398e+00 433 2007 3 5.19047e+01 1.91632e+00 719 2007 4 5.87514e+01 1.17252e+00 593 2007 5 6.10619e+01 4.74839e-01 379 2007 6 6.21561e+01 1.48824e-01 204 2007 7 6.20351e+01 3.12473e-01 372 2007 8 5.93176e+01 1.04900e+00 502 2007 9 5.23569e+01 1.65182e+00 241 2007 10 4.56353e+01 2.14090e+00 116 2007 11 3.76930e+01 1.70312e+00 610 2007 12 3.41791e+01 4.20462e-01 1125 2008 1 3.67069e+01 1.64655e+00 645 2008 2 4.32816e+01 2.44312e+00 1007 2008 3 5.20167e+01 2.80660e+00 698 2008 4 5.80146e+01 1.29716e+00 538 2008 5 6.16622e+01 5.46442e-01 504 2008 6 6.21277e+01 1.33559e-01 339 2008 7 6.14975e+01 5.81557e-01 339 2008 8 5.87439e+01 1.13142e+00 448 2008 9 5.31133e+01 9.69463e-01 205 2008 10 4.77395e+01 2.01079e+00 241 2008 11 3.79572e+01 1.70411e+00 836 2008 12 3.40923e+01 3.02171e-01 801 2009 1 3.66334e+01 1.81978e+00 728 2009 2 4.45246e+01 2.20909e+00 752 2009 3 5.22364e+01 1.98935e+00 887 2009 4 5.75231e+01 8.68985e-01 258 2009 5 6.10435e+01 5.58303e-01 365 2009 6 6.22078e+01 1.35370e-01 356 2009 7 6.18320e+01 3.40740e-01 389 2009 8 5.91304e+01 1.08866e+00 385 2009 9 5.29225e+01 1.77414e+00 537 2009 10 4.61412e+01 2.65618e+00 825 2009 11 3.69648e+01 1.44009e+00 275 2009 12 3.42717e+01 2.94358e-01 656 2010 1 3.81337e+01 5.80017e-01 381 2010 2 4.37497e+01 2.49409e+00 315 2010 3 5.30834e+01 1.43077e+00 509 2010 4 5.82245e+01 1.34300e+00 550 2010 5 6.13194e+01 6.73722e-01 563 2010 6 6.20522e+01 1.36703e-01 512 2010 7 6.15495e+01 6.71760e-01 267 2010 8 5.95281e+01 8.83340e-01 348 2010 9 5.45124e+01 1.91024e+00 453 2010 10 4.45540e+01 1.76040e+00 638 2010 11 3.78787e+01 1.30228e+00 713 2010 12 3.42465e+01 4.38733e-01 604 2011 1 3.63733e+01 1.98586e+00 630 2011 2 4.37276e+01 2.81759e+00 816 2011 3 5.20439e+01 2.13095e+00 897 2011 4 5.79849e+01 1.17926e+00 679 2011 5 6.12777e+01 5.80771e-01 691 2011 6 6.20827e+01 1.87381e-01 361 2011 7 6.18630e+01 4.57710e-01 533 2011 8 5.94711e+01 9.05986e-01 553 2011 9 5.40072e+01 1.22763e+00 415 2011 10 4.84282e+01 1.26237e+00 283 2011 11 3.83120e+01 1.42443e+00 837 2011 12 3.42461e+01 4.13186e-01 832 2012 1 3.62849e+01 1.14617e+00 768 2012 2 4.41577e+01 1.69798e+00 492 2012 3 5.16276e+01 2.33386e+00 608 2012 4 5.72070e+01 1.02301e+00 503 2012 5 6.15322e+01 5.05427e-01 690 2012 6 6.21512e+01 1.61809e-01 378 2012 7 6.18532e+01 3.23398e-01 379 2012 8 5.97969e+01 9.93944e-01 174 2012 9 5.48164e+01 1.19328e+00 467 2012 10 4.52392e+01 2.13306e+00 487 2012 11 3.88259e+01 1.55443e+00 766 2012 12 3.43201e+01 3.91985e-01 707 2013 1 3.68510e+01 1.73990e+00 638 2013 2 4.38168e+01 2.46454e+00 990 2013 3 5.23630e+01 2.08724e+00 407 2013 4 5.80735e+01 1.30550e+00 448 2013 5 6.16384e+01 4.34589e-01 704 2013 6 6.21227e+01 1.33985e-01 326 2013 7 6.16622e+01 4.70834e-01 254 2013 8 5.90957e+01 1.47158e+00 404 2013 9 5.19064e+01 1.09026e+00 321 2013 10 4.42626e+01 2.37420e+00 695 2013 11 3.76979e+01 1.91072e+00 431 2013 12 3.43102e+01 5.17917e-01 657 2014 1 3.68617e+01 1.67102e+00 422 2014 2 4.29294e+01 2.16345e+00 879 2014 3 5.16115e+01 2.03401e+00 605 2014 4 5.83950e+01 1.68130e+00 576 2014 5 6.13258e+01 4.95980e-01 320 2014 6 6.21193e+01 1.59559e-01 442 2014 7 6.21531e+01 2.93234e-01 324 2014 8 5.89276e+01 9.06861e-01 309 2014 9 5.39625e+01 2.47992e+00 188 2014 10 4.51812e+01 2.68629e+00 458 2014 11 3.81615e+01 1.82993e+00 893 2014 12 3.43126e+01 3.53083e-01 697 2015 1 3.65135e+01 1.83261e+00 498 2015 2 4.31997e+01 1.96395e+00 526 2015 3 5.12718e+01 2.29635e+00 980 2015 4 5.71780e+01 1.38797e+00 567 2015 5 6.15279e+01 4.87914e-01 496 2015 6 6.20792e+01 1.72963e-01 330 2015 7 6.19436e+01 2.89838e-01 399 2015 8 5.94529e+01 7.40187e-01 399 2015 9 5.28995e+01 1.46508e+00 268 2015 10 4.53710e+01 1.66809e+00 440 2015 11 3.83275e+01 1.81402e+00 884 2015 12 3.41196e+01 4.26263e-01 434 2016 1 3.49294e+01 2.45432e-02 22 2016 2 4.33267e+01 2.33116e+00 543 2016 3 5.14044e+01 2.41926e+00 446 2016 4 5.84643e+01 1.37962e+00 557 2016 5 6.11832e+01 5.78772e-01 548 2016 6 6.19908e+01 3.47770e-01 588 2016 7 6.19576e+01 4.81670e-01 696 2016 8 5.90482e+01 1.01682e+00 471 2016 9 5.30087e+01 2.12679e+00 801 2016 10 4.47668e+01 2.25099e+00 548 2016 11 3.78086e+01 1.82884e+00 1021 2016 12 3.41049e+01 3.43926e-01 778 2017 1 3.59719e+01 9.85738e-01 520 2017 2 4.57288e+01 1.90922e+00 586 2017 3 5.32330e+01 1.33023e+00 608 2017 4 5.77045e+01 1.62033e+00 384 2017 5 6.13342e+01 6.21237e-01 550 2017 6 6.21239e+01 1.49805e-01 299 2017 7 6.18990e+01 3.84090e-01 176 2017 8 5.84437e+01 1.24708e+00 483 2017 9 5.40406e+01 1.74117e+00 400 2017 10 4.59068e+01 2.21717e+00 385 2017 11 3.76906e+01 1.62763e+00 595 2017 12 3.42556e+01 4.65147e-01 1023 2018 1 3.54758e+01 1.59642e-01 158 2018 2 4.42436e+01 1.95892e+00 635 2018 3 5.19385e+01 2.52911e+00 768 2018 4 5.78579e+01 1.15537e+00 436 2018 5 6.12355e+01 4.42476e-01 384 2018 6 6.20928e+01 1.38106e-01 384 2018 7 6.18604e+01 3.59351e-01 808 2018 8 5.86501e+01 1.15049e+00 346 2018 9 5.31137e+01 1.87298e+00 650 2018 10 4.51478e+01 2.65423e+00 788 2018 11 3.88680e+01 1.25176e+00 565 2018 12 3.44656e+01 3.21274e-01 527 2019 1 3.57764e+01 1.28582e+00 594 2019 2 4.35293e+01 2.29790e+00 924 2019 3 5.18450e+01 2.54714e+00 870 2019 4 5.84824e+01 1.29257e+00 602 2019 5 6.13343e+01 6.19108e-01 697 2019 6 6.20770e+01 2.27240e-01 561 2019 7 6.16574e+01 3.94041e-01 687 2019 8 5.90829e+01 9.22179e-01 238 2019 9 5.32300e+01 1.85249e+00 368 2019 10 4.46713e+01 1.78207e+00 582 2019 11 3.79198e+01 2.06247e+00 625 2019 12 3.42894e+01 3.31316e-01 580 2020 1 3.51903e+01 9.54768e-01 448 2020 2 4.52643e+01 1.86851e+00 457 2020 3 5.23472e+01 2.08724e+00 851 2020 4 5.77304e+01 1.48211e+00 384 2020 5 6.12944e+01 4.67426e-01 319 2020 6 6.20788e+01 1.40656e-01 429 2020 7 6.18124e+01 5.56995e-01 384 2020 8 5.88220e+01 1.39641e+00 596 2020 9 5.26657e+01 2.08519e+00 302 2020 10 4.41472e+01 2.36286e+00 292 2020 11 3.70683e+01 1.76850e+00 411 2020 12 3.40736e+01 3.84732e-01 652 2021 1 3.71621e+01 1.95886e+00 575 2021 2 4.51216e+01 1.76318e+00 639 2021 3 5.20146e+01 2.31490e+00 994 2021 4 5.81604e+01 1.57054e+00 768 2021 5 6.13680e+01 6.31665e-01 561 2021 6 6.20822e+01 1.48685e-01 305 2021 7 6.18232e+01 4.31809e-01 421 2021 8 5.97927e+01 9.00066e-01 325 2021 9 5.17107e+01 1.61143e+00 576 2021 10 4.70646e+01 1.52076e+00 529 2021 11 3.71334e+01 1.64311e+00 271 2021 12 3.41203e+01 2.47245e-01 968 2022 1 3.63319e+01 2.08305e+00 612 2022 2 4.42631e+01 2.25125e+00 943 2022 3 5.21323e+01 2.56534e+00 584 2022 4 5.95257e+01 6.91618e-01 256 2022 5 6.09397e+01 4.67376e-01 415 2022 6 6.20871e+01 1.76314e-01 576 2022 7 6.20061e+01 3.27446e-01 606 2022 8 5.81733e+01 9.15111e-01 396 2022 9 5.34273e+01 1.37123e+00 334 2022 10 4.51904e+01 2.83994e+00 675 2022 11 3.91955e+01 1.58252e+00 424 2022 12 3.42817e+01 3.53382e-01 783 2023 1 3.60176e+01 1.27266e+00 332 2023 2 4.44083e+01 2.48464e+00 833 2023 3 5.17220e+01 2.18280e+00 704 2023 4 5.67501e+01 1.21820e+00 228 2023 5 6.11982e+01 5.21714e-01 712 2023 6 6.21740e+01 1.30029e-01 538 2023 7 6.20418e+01 5.55266e-01 557 2023 8 5.92802e+01 1.07146e+00 263 2023 9 5.45921e+01 1.02072e+00 491 2023 10 4.44179e+01 2.46361e+00 541 2023 11 3.81801e+01 1.46917e+00 281 2023 12 3.43023e+01 4.57745e-01 365 2024 1 3.68646e+01 1.94017e+00 345 2024 2 4.42767e+01 2.64504e+00 707 2024 3 5.31874e+01 2.38895e+00 448 2024 4 5.60921e+01 4.19624e-02 64