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 6.16956e+01 1.20653e-01 319 2002 8 5.78886e+01 1.01144e+00 298 2002 9 5.25277e+01 1.82783e+00 454 2002 10 4.49525e+01 2.75985e+00 824 2002 11 3.82658e+01 1.68451e+00 450 2002 12 3.35387e+01 3.38267e-01 358 2003 1 3.56804e+01 1.72762e+00 704 2003 2 4.21251e+01 2.37231e+00 637 2003 3 5.10936e+01 2.47930e+00 563 2003 4 5.75617e+01 1.39955e+00 408 2003 5 6.14306e+01 6.60428e-01 448 2003 6 6.22159e+01 6.02677e-02 128 2003 7 6.15595e+01 1.88064e-01 185 2003 8 5.86381e+01 5.35235e-01 268 2003 9 5.33715e+01 1.34807e+00 472 2003 10 4.48015e+01 2.22082e+00 868 2003 11 3.66034e+01 1.60461e+00 493 2003 12 3.32117e+01 2.03037e-01 345 2004 1 3.56770e+01 1.64482e+00 478 2004 2 4.33383e+01 2.48355e+00 544 2004 3 5.06100e+01 2.21303e+00 423 2004 4 5.74913e+01 1.12208e+00 587 2004 5 6.19805e+01 2.61983e-01 293 2004 6 6.22578e+01 1.29385e-01 705 2004 7 6.17824e+01 5.11405e-01 514 2004 8 5.75934e+01 1.16541e+00 333 2004 9 5.14069e+01 1.58850e+00 358 2004 10 4.51539e+01 2.62787e+00 647 2004 11 3.73142e+01 1.06790e+00 278 2004 12 3.30739e+01 1.86913e-01 408 2005 1 3.62836e+01 1.49403e+00 644 2005 2 4.27115e+01 1.26177e+00 363 2005 3 5.12810e+01 2.33072e+00 568 2005 4 5.73521e+01 1.32145e+00 422 2005 5 6.19866e+01 3.46926e-01 457 2005 6 6.22254e+01 1.22082e-01 117 2005 7 6.17094e+01 4.38909e-01 460 2005 8 5.87621e+01 1.35435e+00 280 2005 9 5.28163e+01 1.84576e+00 496 2005 10 4.63346e+01 2.20755e+00 321 2005 11 3.76940e+01 2.02716e+00 549 2005 12 3.33673e+01 3.62818e-01 752 2006 1 3.48742e+01 1.58246e+00 544 2006 2 4.30980e+01 2.05068e+00 712 2006 3 5.15873e+01 2.57811e+00 674 2006 4 5.79283e+01 1.54062e+00 643 2006 5 6.13948e+01 5.72936e-01 428 2006 6 6.23723e+01 1.07502e-01 259 2006 7 6.12797e+01 4.43791e-01 357 2006 8 5.80364e+01 9.91736e-01 265 2006 9 5.27779e+01 1.66616e+00 514 2006 10 4.52533e+01 1.98179e+00 495 2006 11 3.66204e+01 1.39785e+00 485 2006 12 3.35915e+01 5.56537e-01 215 2007 1 3.62924e+01 1.82295e+00 412 2007 2 4.37006e+01 1.49988e+00 471 2007 3 5.00850e+01 2.01432e+00 333 2007 4 5.68400e+01 1.14450e+00 524 2007 5 6.12723e+01 7.14952e-01 303 2007 6 6.23698e+01 1.37112e-01 478 2007 7 6.17627e+01 2.60689e-01 474 2007 8 5.90678e+01 1.45621e+00 373 2007 9 5.29624e+01 2.31793e+00 212 2007 10 4.59110e+01 3.05515e+00 147 2007 11 3.74183e+01 1.72081e+00 807 2007 12 3.34713e+01 7.37728e-01 519 2008 1 3.61491e+01 1.99600e+00 394 2008 2 4.26334e+01 2.76991e+00 614 2008 3 5.12875e+01 2.05311e+00 158 2008 4 5.72143e+01 1.58592e+00 278 2008 5 6.13663e+01 4.12509e-01 291 2008 6 6.21842e+01 1.21240e+00 317 2008 7 6.11356e+01 6.21303e-01 384 2008 8 5.90913e+01 1.18732e+00 532 2008 9 5.38873e+01 1.51106e+00 334 2008 10 4.59448e+01 2.81245e+00 490 2008 11 3.69697e+01 2.12918e+00 582 2008 12 3.33032e+01 4.09483e-01 290 2009 1 3.59089e+01 1.66946e+00 688 2009 2 4.29084e+01 2.26855e+00 642 2009 3 4.99125e+01 1.75146e+00 414 2009 4 5.75639e+01 1.13306e+00 299 2009 5 6.12134e+01 5.46858e-01 331 2009 6 6.23375e+01 1.20116e-01 320 2009 7 6.17801e+01 2.01085e-01 78 2009 8 5.90018e+01 1.57398e+00 299 2009 9 5.27358e+01 1.59006e+00 329 2009 10 4.49438e+01 2.84231e+00 673 2009 11 3.68846e+01 1.76254e+00 576 2009 12 3.32636e+01 1.65704e-01 360 2010 1 3.60358e+01 1.37435e+00 426 2010 2 4.44343e+01 1.89065e+00 391 2010 3 5.14801e+01 2.55861e+00 609 2010 4 5.73300e+01 1.66443e+00 561 2010 5 6.11988e+01 6.14786e-01 336 2010 6 6.22715e+01 9.10533e-02 621 2010 7 6.13579e+01 6.01735e-01 450 2010 8 5.83016e+01 1.13615e+00 345 2010 9 5.51245e+01 1.33006e+00 114 2010 10 4.63956e+01 2.61465e+00 640 2010 11 3.78604e+01 1.53508e+00 717 2010 12 3.33939e+01 4.36608e-01 709 2011 1 3.51604e+01 1.82356e+00 472 2011 2 4.35284e+01 2.11114e+00 524 2011 3 5.14397e+01 2.23945e+00 1001 2011 4 5.72375e+01 1.41082e+00 515 2011 5 6.16259e+01 5.10950e-01 619 2011 6 6.23472e+01 1.29970e-01 370 2011 7 6.14692e+01 4.09227e-01 440 2011 8 6.02913e+01 3.05403e-01 128 2011 9 5.27158e+01 1.78869e+00 510 2011 10 4.67086e+01 2.12168e+00 247 2011 11 3.79058e+01 1.90093e+00 476 2011 12 3.33972e+01 5.34232e-01 642 2012 1 3.49577e+01 9.76349e-01 538 2012 2 4.46865e+01 1.48153e+00 668 2012 3 5.32746e+01 1.77568e+00 250 2012 4 5.71155e+01 1.37153e+00 406 2012 5 6.13939e+01 6.48230e-01 308 2012 6 6.22839e+01 1.06201e-01 260 2012 7 6.13474e+01 6.58472e-01 374 2012 8 5.84767e+01 1.27666e+00 288 2012 9 5.30610e+01 2.66331e+00 504 2012 10 4.46204e+01 2.59032e+00 727 2012 11 3.75193e+01 1.92946e+00 768 2012 12 3.31813e+01 2.05044e-01 218 2013 1 3.59373e+01 1.93308e+00 448 2013 2 4.30346e+01 2.53551e+00 583 2013 3 5.07943e+01 2.34922e+00 468 2013 4 5.66368e+01 7.24847e-01 135 2013 5 6.14487e+01 3.79318e-01 453 2013 6 6.22845e+01 1.39437e-01 86 2013 7 6.12900e+01 6.67261e-01 296 2013 8 5.89626e+01 9.43528e-01 219 2013 9 5.25134e+01 1.77452e+00 293 2013 10 4.47954e+01 2.21664e+00 708 2013 11 3.71483e+01 1.97714e+00 264 2013 12 3.34339e+01 3.99442e-01 243 2014 1 3.64110e+01 1.04075e+00 525 2014 2 4.24215e+01 2.03031e+00 616 2014 3 4.96586e+01 1.79498e+00 639 2014 4 5.83642e+01 1.55030e+00 588 2014 5 6.10200e+01 5.12982e-01 320 2014 6 6.22207e+01 9.47099e-02 626 2014 7 6.13626e+01 4.04547e-01 235 2014 8 5.85956e+01 1.27266e+00 571 2014 9 5.34932e+01 2.73164e+00 171 2014 10 4.50813e+01 2.86929e+00 603 2014 11 3.76887e+01 1.97567e+00 661 2014 12 3.33276e+01 2.88151e-01 473 2015 1 3.59571e+01 1.83230e+00 522 2015 2 4.29958e+01 1.88773e+00 582 2015 3 5.08504e+01 2.63259e+00 963 2015 4 5.72285e+01 1.10892e+00 239 2015 5 6.11739e+01 6.35469e-01 486 2015 6 6.21484e+01 7.65743e-02 320 2015 7 6.16801e+01 4.06215e-01 449 2015 8 5.88463e+01 1.27390e+00 437 2015 9 5.47058e+01 1.48359e+00 273 2015 10 4.46355e+01 2.83587e+00 471 2015 11 3.84274e+01 1.63820e+00 545 2015 12 3.29612e+01 1.48633e-01 159 2016 1 3.52352e+01 1.94204e+00 128 2016 2 4.34460e+01 2.72508e+00 564 2016 3 4.96738e+01 1.83500e+00 258 2016 4 5.75432e+01 1.41332e+00 548 2016 5 6.13098e+01 2.42145e-01 256 2016 6 6.20604e+01 8.55021e-02 353 2016 7 6.16897e+01 5.73947e-01 530 2016 8 5.84426e+01 9.52987e-01 347 2016 9 5.25394e+01 1.72897e+00 450 2016 10 4.57442e+01 1.88919e+00 244 2016 11 3.72098e+01 1.32584e+00 272 2016 12 3.32061e+01 3.42697e-01 482 2017 1 3.61162e+01 1.77796e+00 567 2017 2 4.25608e+01 2.16632e+00 537 2017 3 5.09444e+01 1.91488e+00 426 2017 4 5.86168e+01 1.27289e+00 303 2017 5 6.14353e+01 6.49217e-01 606 2017 6 6.22162e+01 1.08583e-01 252 2017 7 6.15506e+01 4.45467e-01 693 2017 8 5.89277e+01 1.10214e+00 467 2017 9 5.27537e+01 1.53150e+00 418 2017 10 4.38603e+01 2.16504e+00 363 2017 11 3.72776e+01 1.71138e+00 665 2017 12 3.31545e+01 2.68016e-01 962 2018 1 3.50846e+01 1.46038e+00 421 2018 2 4.43987e+01 1.89618e+00 628 2018 3 5.10241e+01 2.35530e+00 930 2018 4 5.76801e+01 1.44687e+00 384 2018 5 6.08258e+01 2.22135e-01 182 2018 6 6.22096e+01 9.36266e-02 348 2018 7 6.15373e+01 3.98213e-01 434 2018 8 5.87646e+01 1.22603e+00 384 2018 9 5.24307e+01 1.50323e+00 463 2018 10 4.45662e+01 2.44684e+00 749 2018 11 3.77323e+01 1.66057e+00 491 2018 12 3.33257e+01 4.92473e-01 609 2019 1 3.52432e+01 1.19388e+00 538 2019 2 4.23529e+01 2.65587e+00 864 2019 3 5.18454e+01 2.89558e+00 372 2019 4 5.78375e+01 1.36550e+00 386 2019 5 6.11956e+01 7.12147e-01 316 2019 6 6.22621e+01 1.22470e-01 598 2019 7 6.12776e+01 4.63856e-01 477 2019 8 5.84190e+01 1.04168e+00 394 2019 9 5.28571e+01 8.70899e-01 368 2019 10 4.42308e+01 2.55894e+00 611 2019 11 3.75822e+01 1.81072e+00 761 2019 12 3.36227e+01 5.17407e-01 319 2020 1 3.56974e+01 1.64172e+00 877 2020 2 4.27125e+01 2.39247e+00 449 2020 3 5.25265e+01 1.89026e+00 603 2020 4 5.74728e+01 1.81490e+00 448 2020 5 6.14922e+01 6.32035e-01 448 2020 6 6.22050e+01 8.07913e-02 256 2020 7 6.19542e+01 3.00675e-01 285 2020 8 5.84871e+01 1.19995e+00 768 2020 9 5.27195e+01 1.77683e+00 397 2020 10 4.45302e+01 2.20609e+00 463 2020 11 3.76725e+01 2.28285e+00 116 2020 12 3.32199e+01 2.93898e-01 549 2021 1 3.58089e+01 1.79035e+00 741 2021 2 4.30320e+01 2.89785e+00 538 2021 3 5.18595e+01 2.93628e+00 666 2021 4 5.83524e+01 1.26194e+00 386 2021 5 6.09654e+01 7.09124e-01 323 2021 6 6.22481e+01 7.57737e-02 169 2021 7 6.13629e+01 4.34426e-01 417 2021 8 5.84169e+01 1.37039e+00 500 2021 9 5.22650e+01 1.92697e+00 404 2021 10 4.60350e+01 2.27698e+00 399 2021 11 3.62138e+01 1.92711e+00 538 2021 12 3.33890e+01 4.34179e-01 762 2022 1 3.55065e+01 1.53433e+00 604 2022 2 4.34616e+01 2.24742e+00 539 2022 3 5.09761e+01 1.06095e+00 134 2022 4 5.88533e+01 7.63032e-01 139 2022 5 6.13402e+01 7.30996e-01 638 2022 6 6.21232e+01 3.49564e-01 364 2022 7 6.17345e+01 3.35401e-01 578 2022 8 5.88222e+01 1.41940e+00 480 2022 9 5.29753e+01 1.83182e+00 436 2022 10 4.35616e+01 2.37809e+00 402 2022 11 3.77071e+01 2.02779e+00 636 2022 12 3.31454e+01 3.38558e-01 406 2023 1 3.49968e+01 1.33697e+00 855 2023 2 4.38252e+01 2.47036e+00 989 2023 3 5.00506e+01 2.64254e+00 574 2023 4 5.75358e+01 1.50647e+00 387 2023 5 6.06934e+01 8.14042e-01 355 2023 6 6.22325e+01 7.35950e-02 395 2023 7 6.17119e+01 5.65451e-01 384 2023 8 5.86533e+01 1.22165e+00 375 2023 9 5.35532e+01 1.88453e+00 346 2023 10 4.53745e+01 2.98687e+00 439 2023 11 3.60331e+01 1.56361e+00 316 2023 12 3.31894e+01 3.73774e-01 256 2024 1 3.64910e+01 2.03374e+00 336 2024 2 4.33377e+01 2.52757e+00 403 2024 3 5.23485e+01 1.86530e+00 429 2024 4 5.57623e+01 1.25942e-01 128