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 6.02316e+01 4.99048e-02 30 2002 8 5.83114e+01 4.42492e-01 284 2002 9 5.60845e+01 8.85274e-01 170 2002 10 5.00076e+01 1.36669e+00 311 2002 11 4.29037e+01 1.47157e+00 938 2002 12 4.00286e+01 2.58961e-01 740 2003 1 4.17067e+01 1.32356e+00 922 2003 2 4.80691e+01 1.81879e+00 502 2003 3 5.46455e+01 1.58250e+00 539 2003 4 5.95059e+01 3.66106e-01 61 2003 5 6.05644e+01 1.42693e-01 218 2003 6 6.05594e+01 1.08846e-02 64 2003 7 6.01771e+01 5.01165e-03 64 2003 8 5.91252e+01 3.69633e-01 192 2003 9 5.54059e+01 1.13905e+00 175 2003 10 5.02971e+01 1.71760e+00 544 2003 11 4.23165e+01 1.18050e+00 338 2003 12 3.99417e+01 1.78342e-01 476 2004 1 4.13970e+01 1.02014e+00 582 2004 2 4.84513e+01 1.83618e+00 475 2004 3 5.56438e+01 1.34006e+00 486 2004 4 5.86135e+01 7.30079e-01 421 2004 5 6.05105e+01 2.05238e-01 123 2004 6 6.01192e+01 5.18928e-01 320 2004 7 5.99962e+01 2.13147e-01 240 2004 8 5.80537e+01 7.33542e-01 130 2004 9 5.44756e+01 1.48672e+00 178 2004 10 5.02741e+01 1.00135e+00 217 2004 11 4.24537e+01 1.49658e+00 417 2004 12 4.00653e+01 3.65357e-01 658 2005 1 4.24302e+01 1.60584e+00 350 2005 2 4.81394e+01 2.23589e+00 415 2005 3 5.51809e+01 1.53215e+00 706 2005 4 5.88453e+01 8.81417e-01 345 2005 5 nan nan 0 2005 6 5.97729e+01 7.21931e-03 64 2005 7 5.98013e+01 1.90698e-01 130 2005 8 5.86445e+01 5.24648e-01 314 2005 9 5.44954e+01 7.42427e-01 307 2005 10 5.07009e+01 2.21270e+00 105 2005 11 4.37762e+01 1.73350e+00 637 2005 12 4.02416e+01 3.88043e-01 611 2006 1 4.22260e+01 1.58254e+00 515 2006 2 4.82889e+01 1.81579e+00 776 2006 3 5.43277e+01 1.56719e+00 694 2006 4 5.87435e+01 1.04089e+00 128 2006 5 6.03897e+01 2.17018e-01 192 2006 6 5.97665e+01 1.34568e-01 182 2006 7 5.98702e+01 2.21144e-01 334 2006 8 5.79472e+01 7.30654e-01 192 2006 9 5.43936e+01 1.05472e+00 553 2006 10 4.91062e+01 2.29170e+00 379 2006 11 4.43482e+01 1.53288e+00 633 2006 12 3.99568e+01 3.41626e-01 712 2007 1 4.23675e+01 1.44954e+00 679 2007 2 4.80716e+01 1.98751e+00 951 2007 3 5.44108e+01 1.77165e+00 408 2007 4 5.89605e+01 4.46160e-01 292 2007 5 6.05076e+01 1.99714e-01 220 2007 6 5.95840e+01 2.18969e-03 5 2007 7 5.98945e+01 2.91779e-01 235 2007 8 5.81283e+01 1.62614e-01 88 2007 9 5.62673e+01 8.81106e-01 179 2007 10 5.02458e+01 1.38938e+00 335 2007 11 4.34742e+01 1.49999e+00 472 2007 12 3.99244e+01 2.43267e-01 568 2008 1 4.18429e+01 1.56574e+00 655 2008 2 4.76514e+01 1.59888e+00 682 2008 3 5.45745e+01 1.86135e+00 317 2008 4 5.91552e+01 8.05855e-01 448 2008 5 6.06029e+01 1.07251e-01 432 2008 6 5.97429e+01 1.70472e-02 139 2008 7 6.01075e+01 2.12798e-01 339 2008 8 5.87625e+01 2.71448e-01 211 2008 9 5.49962e+01 1.09494e+00 393 2008 10 4.95344e+01 1.99368e+00 378 2008 11 4.38578e+01 1.61480e+00 867 2008 12 4.00678e+01 1.77736e-01 423 2009 1 4.20667e+01 1.62205e+00 1072 2009 2 4.79415e+01 1.93874e+00 372 2009 3 5.58478e+01 1.13094e+00 303 2009 4 5.88225e+01 6.63840e-01 571 2009 5 6.05114e+01 1.18490e-01 195 2009 6 6.03660e+01 3.54573e-01 81 2009 7 5.98370e+01 2.46149e-01 192 2009 8 5.82665e+01 9.53086e-01 192 2009 9 5.47653e+01 1.22841e+00 451 2009 10 4.86655e+01 1.52931e+00 591 2009 11 4.31165e+01 1.69451e+00 645 2009 12 4.01005e+01 2.98221e-01 675 2010 1 4.17166e+01 1.33846e+00 838 2010 2 4.74018e+01 1.65425e+00 489 2010 3 5.51125e+01 1.74288e+00 335 2010 4 5.89324e+01 9.14524e-01 131 2010 5 6.03862e+01 2.90352e-01 192 2010 6 5.96296e+01 2.31717e-02 116 2010 7 5.98017e+01 4.80664e-03 48 2010 8 5.79202e+01 3.55741e-01 218 2010 9 5.57898e+01 5.25069e-01 309 2010 10 4.90473e+01 1.21116e+00 512 2010 11 4.24856e+01 4.56258e-01 373 2010 12 4.04050e+01 5.05731e-01 549 2011 1 4.25004e+01 1.07777e+00 674 2011 2 4.79478e+01 1.57351e+00 644 2011 3 5.48238e+01 1.70099e+00 657 2011 4 5.93150e+01 5.72904e-01 345 2011 5 6.03952e+01 7.93813e-02 128 2011 6 5.96143e+01 4.12612e-03 64 2011 7 nan nan 0 2011 8 5.81388e+01 6.75549e-01 190 2011 9 5.55652e+01 1.77051e+00 304 2011 10 4.92977e+01 1.93096e+00 436 2011 11 4.32661e+01 8.74697e-01 340 2011 12 4.02568e+01 3.35531e-01 470 2012 1 4.11342e+01 1.11904e+00 635 2012 2 4.87215e+01 1.82946e+00 588 2012 3 5.32798e+01 8.23484e-01 200 2012 4 5.92285e+01 7.13361e-01 134 2012 5 6.04893e+01 7.44647e-01 145 2012 6 5.97537e+01 1.36350e-01 245 2012 7 6.00132e+01 7.86191e-02 128 2012 8 5.82502e+01 6.60620e-01 192 2012 9 5.49902e+01 1.32319e+00 356 2012 10 4.93672e+01 2.07672e+00 399 2012 11 4.37631e+01 1.54934e+00 523 2012 12 4.00680e+01 4.21992e-01 405 2013 1 4.15345e+01 1.02262e+00 474 2013 2 4.85998e+01 1.98062e+00 839 2013 3 5.45738e+01 1.69249e+00 529 2013 4 5.88953e+01 4.38900e-01 399 2013 5 6.06011e+01 1.76781e-01 137 2013 6 nan nan 0 2013 7 5.99481e+01 1.93710e-01 101 2013 8 5.84045e+01 7.18941e-01 192 2013 9 5.40854e+01 4.86805e-01 179 2013 10 5.02609e+01 1.75356e+00 180 2013 11 4.36702e+01 1.03104e+00 648 2013 12 4.00097e+01 2.00575e-01 532 2014 1 4.23612e+01 1.35220e+00 805 2014 2 4.80047e+01 1.88703e+00 818 2014 3 5.42725e+01 1.87878e+00 737 2014 4 5.90869e+01 8.49871e-01 409 2014 5 6.02854e+01 6.61369e-02 192 2014 6 5.96391e+01 5.00818e-02 216 2014 7 6.02734e+01 3.38200e-02 99 2014 8 5.87334e+01 5.44392e-01 187 2014 9 5.51321e+01 1.29689e+00 369 2014 10 4.86619e+01 1.56455e+00 502 2014 11 4.27083e+01 1.27409e+00 571 2014 12 4.00833e+01 3.39903e-01 745 2015 1 4.16470e+01 1.27617e+00 632 2015 2 4.85024e+01 1.98729e+00 562 2015 3 5.51066e+01 1.85133e+00 452 2015 4 5.88423e+01 7.19144e-01 531 2015 5 6.04023e+01 1.18960e-01 192 2015 6 6.03069e+01 3.95214e-01 192 2015 7 5.99084e+01 6.60943e-03 64 2015 8 5.86859e+01 3.08855e-01 373 2015 9 5.52890e+01 1.50768e+00 429 2015 10 4.95119e+01 1.42515e+00 434 2015 11 4.43704e+01 1.33364e+00 273 2015 12 4.00123e+01 1.67805e-01 768 2016 1 4.16164e+01 1.16711e+00 678 2016 2 4.87281e+01 2.07545e+00 597 2016 3 5.55568e+01 9.57890e-01 341 2016 4 5.86059e+01 5.20670e-01 448 2016 5 6.04472e+01 3.75984e-02 70 2016 6 5.97332e+01 1.31243e-01 256 2016 7 6.01642e+01 7.69853e-02 123 2016 8 5.83724e+01 4.19758e-01 172 2016 9 5.49320e+01 1.04067e+00 403 2016 10 4.89019e+01 1.32032e+00 344 2016 11 4.30590e+01 2.02165e+00 243 2016 12 4.03485e+01 3.43432e-01 438 2017 1 4.18745e+01 1.32661e+00 661 2017 2 4.79035e+01 1.70781e+00 585 2017 3 5.38971e+01 1.68881e+00 406 2017 4 5.86535e+01 9.31619e-01 359 2017 5 6.02931e+01 1.55642e-01 270 2017 6 5.97141e+01 1.02156e-01 387 2017 7 5.99466e+01 2.16983e-01 267 2017 8 5.91349e+01 9.95158e-04 9 2017 9 5.57052e+01 1.67470e+00 249 2017 10 4.98266e+01 1.93598e+00 409 2017 11 4.39655e+01 1.70627e+00 532 2017 12 4.02318e+01 3.89228e-01 371 2018 1 4.24198e+01 1.53475e+00 361 2018 2 4.92506e+01 1.03143e+00 349 2018 3 5.55952e+01 1.27813e+00 618 2018 4 5.85815e+01 4.59343e-01 394 2018 5 6.05181e+01 1.39050e-01 495 2018 6 6.00013e+01 3.77610e-01 221 2018 7 5.98386e+01 8.03441e-03 64 2018 8 5.83988e+01 1.90876e-01 230 2018 9 5.48226e+01 1.37873e+00 256 2018 10 4.84416e+01 1.59215e+00 446 2018 11 4.29086e+01 1.17671e+00 478 2018 12 4.02446e+01 3.72361e-01 702 2019 1 4.17898e+01 1.35472e+00 646 2019 2 4.73600e+01 2.07033e+00 321 2019 3 5.48662e+01 1.41833e+00 613 2019 4 5.94010e+01 3.24597e-01 446 2019 5 6.05139e+01 5.13727e-02 137 2019 6 5.98974e+01 4.63300e-01 256 2019 7 6.00708e+01 1.30359e-01 230 2019 8 5.81008e+01 4.84052e-01 256 2019 9 5.54670e+01 1.25502e+00 213 2019 10 4.98273e+01 1.84248e+00 384 2019 11 4.31336e+01 1.33889e+00 820 2019 12 4.02157e+01 3.03459e-01 394 2020 1 4.13419e+01 1.22841e+00 481 2020 2 4.79677e+01 2.14416e+00 822 2020 3 5.38572e+01 2.11481e+00 320 2020 4 5.91284e+01 7.25501e-01 671 2020 5 6.03721e+01 1.08736e-01 192 2020 6 5.96944e+01 1.06810e-01 393 2020 7 5.99704e+01 2.61767e-01 256 2020 8 5.88481e+01 7.11094e-01 198 2020 9 5.49842e+01 1.41773e+00 303 2020 10 4.96237e+01 1.38442e+00 435 2020 11 4.34725e+01 1.95533e+00 667 2020 12 4.01323e+01 4.14390e-01 656 2021 1 4.18940e+01 1.30294e+00 771 2021 2 4.83933e+01 2.37887e+00 529 2021 3 5.44329e+01 1.71296e+00 621 2021 4 5.92088e+01 5.40454e-01 404 2021 5 6.04022e+01 2.74309e-01 189 2021 6 5.95749e+01 5.98333e-02 157 2021 7 5.98213e+01 1.04850e-01 142 2021 8 5.89371e+01 2.08960e-01 258 2021 9 5.42148e+01 1.29958e+00 486 2021 10 4.86280e+01 1.85997e+00 434 2021 11 4.28256e+01 1.37319e+00 707 2021 12 4.01487e+01 3.62206e-01 603 2022 1 4.19415e+01 1.37032e+00 1008 2022 2 4.77530e+01 2.36685e+00 346 2022 3 5.29304e+01 1.14400e+00 190 2022 4 5.95593e+01 2.93722e-01 128 2022 5 6.04729e+01 7.41244e-02 152 2022 6 5.99469e+01 5.22399e-01 423 2022 7 6.00294e+01 1.15647e-01 327 2022 8 5.81946e+01 4.76504e-01 256 2022 9 5.43928e+01 1.52418e+00 244 2022 10 5.04698e+01 1.25824e+00 369 2022 11 4.33698e+01 1.74677e+00 473 2022 12 4.01404e+01 3.65504e-01 816 2023 1 4.23015e+01 1.56573e+00 795 2023 2 4.77584e+01 2.64820e+00 331 2023 3 5.35456e+01 1.63003e+00 489 2023 4 5.90628e+01 7.57101e-01 571 2023 5 6.05173e+01 1.35857e-01 547 2023 6 5.98412e+01 3.25480e-01 306 2023 7 5.98709e+01 6.49351e-03 34 2023 8 5.83988e+01 9.82448e-01 322 2023 9 5.50576e+01 1.15473e+00 341 2023 10 4.97814e+01 9.51844e-01 363 2023 11 4.29582e+01 1.59641e+00 482 2023 12 4.03312e+01 4.55070e-01 764 2024 1 4.16000e+01 1.38546e+00 744 2024 2 4.89193e+01 1.21041e+00 705 2024 3 5.49689e+01 1.35340e+00 407 2024 4 5.78159e+01 1.25866e-02 18