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 5.97150e-01 2.43874e-01 675 2002 8 7.59570e-01 3.05610e-01 539 2002 9 1.00775e+00 4.66019e-01 574 2002 10 1.64230e+00 8.05176e-01 681 2002 11 1.30432e+00 1.20542e-01 919 2002 12 1.15095e+00 1.37888e-01 496 2003 1 1.39224e+00 5.08514e-01 697 2003 2 1.45911e+00 2.87652e-01 352 2003 3 1.26964e+00 1.96023e-01 538 2003 4 9.34040e-01 2.73644e-01 360 2003 5 7.51589e-01 3.72927e-01 186 2003 6 9.88578e-01 5.16890e-01 493 2003 7 9.55572e-01 5.28092e-01 284 2003 8 3.93335e+00 8.14348e+00 365 2003 9 1.97105e+00 1.17467e+00 769 2003 10 2.16314e+00 1.09436e+00 595 2003 11 1.40321e+00 1.85871e-01 745 2003 12 1.59454e+00 2.42486e-01 355 2004 1 2.78585e+00 8.31144e-01 470 2004 2 2.23699e+00 6.43307e-01 616 2004 3 1.31168e+00 3.78102e-01 941 2004 4 1.10133e+00 4.35284e-01 222 2004 5 6.72249e-01 2.24569e-01 436 2004 6 5.72607e-01 1.84353e-01 516 2004 7 7.33578e-01 4.41361e-01 377 2004 8 2.48273e+00 2.79818e+00 506 2004 9 1.71262e+00 1.21758e+00 601 2004 10 1.74351e+00 1.47207e+00 736 2004 11 1.48336e+00 2.47814e-01 343 2004 12 1.46034e+00 2.67663e-01 429 2005 1 1.83331e+00 6.93469e-01 674 2005 2 1.56882e+00 2.96733e-01 622 2005 3 9.98688e-01 2.74107e-01 611 2005 4 1.19864e+00 6.40451e-01 351 2005 5 5.63608e-01 1.59331e-01 264 2005 6 9.04180e-01 5.55368e-01 758 2005 7 5.55660e-01 1.54215e-01 128 2005 8 1.55382e+00 1.17172e+00 401 2005 9 2.26225e+00 1.86251e+00 822 2005 10 1.83781e+00 1.25393e+00 854 2005 11 1.45456e+00 6.78850e-01 550 2005 12 1.65944e+00 3.01203e-01 688 2006 1 1.44718e+00 1.48048e-01 531 2006 2 1.68872e+00 4.17894e-01 280 2006 3 1.29149e+00 3.53155e-01 733 2006 4 6.04286e-01 2.41391e-01 530 2006 5 7.45244e-01 2.88956e-01 304 2006 6 4.78588e-01 2.31901e-01 674 2006 7 7.10010e-01 1.99300e-01 191 2006 8 2.66189e+00 7.43577e-01 60 2006 9 1.74026e+00 1.10244e+00 774 2006 10 2.45523e+00 1.18969e+00 906 2006 11 1.79185e+00 4.17833e-01 671 2006 12 1.49307e+00 1.58974e-01 360 2007 1 1.44089e+00 3.12800e-01 672 2007 2 1.49403e+00 4.14496e-01 750 2007 3 1.45526e+00 4.42677e-01 631 2007 4 1.62686e+00 6.44646e-01 91 2007 5 7.94549e-01 2.94681e-01 160 2007 6 1.12270e+00 1.20749e+00 361 2007 7 1.13148e+00 1.82301e+00 55 2007 8 1.84205e+00 2.55177e+00 511 2007 9 4.53274e+00 5.67836e+00 769 2007 10 3.05375e+00 2.85538e+00 576 2007 11 1.91653e+00 7.61465e-01 1011 2007 12 1.42318e+00 3.30019e-01 513 2008 1 1.26342e+00 1.21572e-01 354 2008 2 1.53573e+00 4.14469e-01 667 2008 3 1.03484e+00 3.61078e-01 675 2008 4 1.05788e+00 4.06006e-01 228 2008 5 1.42973e+00 2.74784e-01 215 2008 6 2.11205e+00 1.80922e-01 8 2008 7 1.58676e+00 1.25840e+00 112 2008 8 1.73682e+00 1.14259e+00 117 2008 9 3.19554e+00 2.46815e+00 447 2008 10 3.56477e+00 4.12313e+00 557 2008 11 1.79877e+00 4.31164e-01 761 2008 12 1.38494e+00 1.77415e-01 988 2009 1 1.93515e+00 1.31130e+00 810 2009 2 1.43760e+00 6.63254e-01 241 2009 3 1.99054e+00 7.59755e-01 221 2009 4 6.71783e-01 1.13418e-01 256 2009 5 7.81680e-01 2.15456e-01 314 2009 6 6.43220e-01 2.73283e-01 88 2009 7 nan nan 0 2009 8 9.34787e-01 7.53090e-01 193 2009 9 2.23926e+00 2.73244e+00 454 2009 10 3.57093e+00 2.73156e+00 395 2009 11 1.62316e+00 2.74853e-01 674 2009 12 1.47434e+00 3.43361e-01 528 2010 1 1.26861e+00 3.10766e-01 563 2010 2 1.21055e+00 2.27204e-01 517 2010 3 1.11047e+00 4.38289e-01 520 2010 4 5.38401e-01 9.57977e-02 136 2010 5 6.31086e-01 2.64768e-01 296 2010 6 6.54335e-01 3.25836e-01 131 2010 7 6.60148e-01 6.00769e-01 348 2010 8 6.31683e-01 2.89158e-01 255 2010 9 6.43668e+00 1.05440e+01 297 2010 10 1.66668e+00 9.18787e-01 787 2010 11 1.32781e+00 1.46609e-01 1262 2010 12 1.44857e+00 2.52296e-01 818 2011 1 1.35990e+00 1.56194e-01 658 2011 2 1.58950e+00 2.64889e-01 345 2011 3 1.13595e+00 3.48169e-01 600 2011 4 7.37914e-01 2.11236e-01 243 2011 5 7.82148e-01 2.29442e-01 402 2011 6 6.48002e-01 1.78522e-01 266 2011 7 6.39173e-01 2.36570e-01 312 2011 8 5.53015e-01 9.36256e-02 294 2011 9 1.49714e+00 8.79794e-01 675 2011 10 2.12381e+00 9.90920e-01 858 2011 11 1.83634e+00 5.27915e-01 482 2011 12 1.51717e+00 2.29565e-01 1033 2012 1 1.26679e+00 3.92380e-01 738 2012 2 1.25485e+00 2.93399e-01 577 2012 3 1.08040e+00 2.35654e-01 502 2012 4 1.12373e+00 3.10063e-01 210 2012 5 3.44869e-01 1.79055e-01 57 2012 6 8.34819e-01 3.66453e-01 241 2012 7 8.96269e-01 6.99932e-01 497 2012 8 5.35126e-01 2.28753e-01 338 2012 9 1.26613e+00 1.06718e+00 607 2012 10 1.01331e+00 4.08085e-01 505 2012 11 1.22247e+00 2.55061e-01 621 2012 12 1.24322e+00 2.27084e-01 352 2013 1 1.31447e+00 1.87380e-01 608 2013 2 1.28118e+00 1.68956e-01 610 2013 3 1.08025e+00 3.02255e-01 370 2013 4 6.67767e-01 2.35587e-01 238 2013 5 7.81456e-01 4.38291e-01 288 2013 6 4.87268e-01 2.35026e-01 402 2013 7 6.19559e-01 5.57598e-01 407 2013 8 7.55263e-01 1.15507e+00 569 2013 9 1.19178e+00 6.69658e-01 684 2013 10 2.39190e+00 2.10995e+00 901 2013 11 1.56301e+00 2.35875e-01 577 2013 12 1.26085e+00 2.98166e-01 982 2014 1 1.32938e+00 2.13341e-01 709 2014 2 1.19612e+00 1.35792e-01 639 2014 3 1.11834e+00 4.12021e-01 680 2014 4 8.77280e-01 2.27643e-01 383 2014 5 8.75384e-01 2.06351e-01 250 2014 6 8.47593e-01 5.21389e-01 751 2014 7 1.20492e+00 5.85519e-01 476 2014 8 4.03588e-01 9.41111e-02 305 2014 9 1.19914e+00 8.83116e-01 1029 2014 10 1.51772e+00 6.04399e-01 979 2014 11 1.45160e+00 1.53072e-01 733 2014 12 1.38495e+00 1.87730e-01 991 2015 1 1.31355e+00 1.66730e-01 755 2015 2 1.29063e+00 1.49177e-01 446 2015 3 1.41653e+00 3.70503e-01 643 2015 4 1.01884e+00 2.31666e-01 241 2015 5 1.53259e+00 4.88369e-01 144 2015 6 8.69663e-01 4.36360e-01 411 2015 7 5.46311e-01 7.01104e-02 189 2015 8 5.42111e-01 2.42837e-01 635 2015 9 1.68587e+00 1.09340e+00 631 2015 10 1.85411e+00 1.36565e+00 541 2015 11 1.37721e+00 4.00551e-01 895 2015 12 1.35849e+00 1.49309e-01 739 2016 1 1.36612e+00 2.21243e-01 935 2016 2 1.11440e+00 2.36011e-01 1044 2016 3 7.53965e-01 2.31441e-01 464 2016 4 5.57520e-01 1.32171e-01 644 2016 5 9.88751e-01 4.31464e-01 467 2016 6 6.62899e-01 2.68999e-01 451 2016 7 6.15459e-01 2.06556e-01 347 2016 8 7.65241e-01 4.15189e-01 714 2016 9 1.44337e+00 8.53539e-01 769 2016 10 1.57874e+00 5.05675e-01 979 2016 11 1.61553e+00 3.89599e-01 660 2016 12 1.79453e+00 6.40838e-01 614 2017 1 1.42001e+00 2.36716e-01 556 2017 2 1.26684e+00 1.54418e-01 382 2017 3 1.08969e+00 3.58021e-01 639 2017 4 6.97967e-01 1.82664e-01 207 2017 5 5.65542e-01 1.42168e-01 241 2017 6 4.64752e-01 2.25347e-01 723 2017 7 5.81232e-01 1.63680e-01 411 2017 8 7.70649e-01 2.75807e-01 473 2017 9 1.76185e+00 8.48397e-01 593 2017 10 2.32922e+00 2.41616e+00 780 2017 11 1.33145e+00 2.27159e-01 762 2017 12 1.22754e+00 2.00647e-01 899 2018 1 1.26535e+00 2.08980e-01 753 2018 2 1.06267e+00 1.67615e-01 370 2018 3 1.00632e+00 3.06224e-01 759 2018 4 9.83177e-01 2.19215e-01 219 2018 5 5.75735e-01 1.89847e-01 325 2018 6 6.30475e-01 2.16887e-01 412 2018 7 4.74660e-01 1.45259e-01 304 2018 8 6.40275e-01 2.03884e-01 666 2018 9 1.25530e+00 4.65484e-01 624 2018 10 1.44326e+00 4.64768e-01 283 2018 11 1.35113e+00 1.59544e-01 363 2018 12 1.51791e+00 2.61899e-01 875 2019 1 1.32101e+00 1.09934e-01 377 2019 2 1.34773e+00 2.04467e-01 653 2019 3 9.90198e-01 1.58958e-01 727 2019 4 9.05289e-01 3.02129e-01 440 2019 5 8.57725e-01 3.75912e-01 594 2019 6 5.93697e-01 1.93534e-01 827 2019 7 8.28718e-01 1.98536e-01 631 2019 8 9.59227e-01 5.06578e-01 629 2019 9 1.78908e+00 9.08997e-01 991 2019 10 1.64611e+00 9.01711e-01 636 2019 11 1.36720e+00 3.02473e-01 628 2019 12 1.32272e+00 2.70196e-01 515 2020 1 1.35298e+00 2.10036e-01 496 2020 2 1.46219e+00 2.61575e-01 766 2020 3 1.22151e+00 4.05012e-01 626 2020 4 9.29445e-01 3.10406e-01 283 2020 5 9.05241e-01 4.04305e-01 543 2020 6 5.27253e-01 1.93581e-01 730 2020 7 9.37796e-01 6.25688e-01 578 2020 8 1.48512e+00 6.12796e-01 262 2020 9 8.95592e-01 3.56203e-01 845 2020 10 1.86009e+00 7.52796e-01 1350 2020 11 1.32639e+00 1.50757e-01 664 2020 12 1.54648e+00 3.31244e-01 657 2021 1 1.44099e+00 1.48580e-01 1007 2021 2 1.24272e+00 1.85761e-01 919 2021 3 1.00297e+00 2.02732e-01 412 2021 4 6.21259e-01 1.33804e-01 341 2021 5 8.58870e-01 7.03741e-01 640 2021 6 1.05622e+00 8.73885e-01 603 2021 7 6.31922e-01 2.13930e-01 536 2021 8 1.02867e+00 4.11978e-01 640 2021 9 1.20959e+00 4.07338e-01 931 2021 10 1.46956e+00 7.63348e-01 1136 2021 11 1.45321e+00 2.52608e-01 783 2021 12 1.44673e+00 3.08006e-01 412 2022 1 1.21258e+00 1.96819e-01 744 2022 2 1.10575e+00 2.06367e-01 889 2022 3 1.14644e+00 2.05538e-01 341 2022 4 6.71655e-01 9.35119e-02 65 2022 5 7.57985e-01 3.52037e-01 324 2022 6 3.91475e-01 8.41098e-02 447 2022 7 4.81205e-01 2.41783e-01 260 2022 8 1.37063e+00 1.13338e+00 381 2022 9 1.76650e+00 3.12021e+00 893 2022 10 1.35697e+00 4.05524e-01 943 2022 11 1.23226e+00 1.77643e-01 566 2022 12 1.28848e+00 1.70132e-01 697 2023 1 1.43996e+00 3.06557e-01 412 2023 2 1.35882e+00 2.98677e-01 610 2023 3 8.07374e-01 2.39220e-01 1024 2023 4 7.47474e-01 3.41954e-01 676 2023 5 7.11422e-01 2.37477e-01 321 2023 6 5.34408e-01 2.09703e-01 832 2023 7 7.67690e-01 4.64619e-01 748 2023 8 7.65669e-01 2.26646e-01 241 2023 9 9.90302e-01 3.25472e-01 844 2023 10 1.44536e+00 5.79762e-01 900 2023 11 1.48898e+00 2.10210e-01 596 2023 12 1.62265e+00 2.45052e-01 612 2024 1 1.22354e+00 1.31931e-01 757 2024 2 1.29062e+00 2.68900e-01 1122 2024 3 1.05602e+00 1.87086e-01 798 2024 4 5.48371e-01 1.44489e-01 197