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 7.94542e-01 1.95962e-01 200 2002 8 7.80997e-01 2.65834e-01 384 2002 9 8.04162e-01 1.90169e-01 247 2002 10 9.15716e-01 2.77741e-01 562 2002 11 1.02759e+00 5.57132e-01 733 2002 12 1.07707e+00 5.18519e-01 636 2003 1 1.13818e+00 4.72353e-01 808 2003 2 9.84942e-01 5.89179e-01 572 2003 3 nan nan 0 2003 4 7.08159e+00 2.03471e+00 34 2003 5 2.12800e+00 1.55174e+00 167 2003 6 4.33161e+00 2.05966e+00 59 2003 7 5.36231e+00 1.96204e+00 11 2003 8 3.52731e+00 1.12998e+00 128 2003 9 2.02740e+00 1.17548e+00 271 2003 10 1.46372e+00 6.49790e-01 692 2003 11 1.28755e+00 4.02445e-01 848 2003 12 8.87961e-01 4.23754e-01 727 2004 1 9.92502e-01 2.04452e-01 759 2004 2 9.46348e-01 4.19647e-01 384 2004 3 2.83740e+00 1.53515e+00 798 2004 4 1.13471e+00 4.38248e-01 307 2004 5 9.79130e-01 3.75612e-01 552 2004 6 1.15632e+00 9.20667e-01 398 2004 7 1.43067e+00 3.55483e-01 270 2004 8 1.58618e+00 1.34075e+00 335 2004 9 2.60671e+00 1.86098e+00 68 2004 10 nan nan 0 2004 11 4.94849e+00 7.90864e-01 7 2004 12 2.94682e+00 1.01882e+00 275 2005 1 2.25743e+00 1.37412e+00 447 2005 2 2.67982e+00 1.52125e+00 442 2005 3 2.32890e+00 2.17484e+00 311 2005 4 3.94987e+00 2.37910e+00 192 2005 5 2.78934e+00 6.03940e-01 63 2005 6 3.34134e+00 1.76221e+00 187 2005 7 8.18554e+00 0.00000e+00 1 2005 8 4.46025e+00 1.96139e+00 176 2005 9 2.20134e+00 1.33788e+00 260 2005 10 1.02239e+00 2.73705e-01 889 2005 11 8.83928e-01 2.92701e-01 856 2005 12 1.30324e+00 5.79418e-01 660 2006 1 2.68227e+00 1.41172e+00 413 2006 2 3.98880e+00 2.07044e+00 274 2006 3 4.25644e+00 2.08029e+00 798 2006 4 1.48864e+00 6.50073e-01 378 2006 5 1.24807e+00 5.75524e-01 416 2006 6 1.29187e+00 4.74295e-01 235 2006 7 1.53584e+00 4.19595e-01 178 2006 8 1.24405e+00 2.42890e-01 254 2006 9 1.02883e+00 2.78422e-01 704 2006 10 9.77039e-01 6.02998e-01 731 2006 11 9.35251e-01 6.30843e-01 821 2006 12 5.58066e-01 8.55364e-02 387 2007 1 8.07327e-01 2.75886e-01 368 2007 2 8.38321e-01 5.36637e-01 687 2007 3 9.67965e-01 4.59159e-01 897 2007 4 9.56396e-01 3.23317e-01 531 2007 5 1.00218e+00 4.24460e-01 145 2007 6 9.57889e-01 2.41282e-01 253 2007 7 1.36575e+00 5.70154e-01 360 2007 8 9.88148e-01 2.00106e-01 329 2007 9 1.11653e+00 6.79042e-01 393 2007 10 8.15880e-01 2.97983e-01 537 2007 11 7.38936e-01 2.69210e-01 906 2007 12 7.50198e-01 2.29757e-01 586 2008 1 1.14421e+00 8.80759e-01 506 2008 2 1.05062e+00 2.15108e-01 704 2008 3 1.32257e+00 9.55960e-01 303 2008 4 3.89185e+00 1.48294e+00 288 2008 5 3.04467e+00 1.84013e+00 349 2008 6 1.49894e+00 9.05578e-01 330 2008 7 9.56092e-01 3.50958e-01 368 2008 8 2.05698e+00 1.74348e+00 116 2008 9 1.72834e+00 7.85753e-01 195 2008 10 2.12546e+00 1.24880e+00 724 2008 11 9.78488e-01 6.04035e-01 1017 2008 12 2.05113e+00 1.11582e+00 747 2009 1 1.50825e+00 9.93626e-01 653 2009 2 1.02958e+00 3.98334e-01 884 2009 3 1.09169e+00 5.56185e-01 794 2009 4 2.80899e+00 1.90257e+00 254 2009 5 3.78861e+00 2.80029e+00 115 2009 6 7.82583e-01 2.55936e-01 150 2009 7 3.56947e+00 2.20624e+00 58 2009 8 2.41174e+00 1.05978e+00 450 2009 9 1.66123e+00 9.80358e-01 457 2009 10 1.05941e+00 2.41253e-01 774 2009 11 9.35806e-01 3.35544e-01 604 2009 12 9.02216e-01 3.63775e-01 262 2010 1 1.49735e+00 1.13175e+00 819 2010 2 2.04318e+00 9.81947e-01 696 2010 3 3.44169e+00 1.81598e+00 616 2010 4 4.07142e+00 2.06342e+00 190 2010 5 2.93980e+00 2.33487e+00 281 2010 6 1.72380e+00 9.12789e-01 508 2010 7 2.22932e+00 8.55370e-01 303 2010 8 3.13685e+00 2.19372e+00 173 2010 9 1.58995e+00 8.18533e-01 438 2010 10 1.12253e+00 7.20289e-01 1526 2010 11 9.38974e-01 3.63908e-01 1147 2010 12 6.85759e-01 2.25751e-01 759 2011 1 7.41212e-01 3.32947e-01 525 2011 2 8.57952e-01 7.19424e-01 798 2011 3 1.29309e+00 5.38090e-01 842 2011 4 1.32511e+00 4.26172e-01 570 2011 5 1.06739e+00 6.70321e-01 634 2011 6 9.02534e-01 1.96906e-01 256 2011 7 8.25592e-01 1.97199e-01 326 2011 8 8.79949e-01 4.70219e-01 302 2011 9 8.03001e-01 2.24402e-01 637 2011 10 8.92218e-01 4.06341e-01 1003 2011 11 6.97385e-01 2.49796e-01 1023 2011 12 6.16029e-01 1.83328e-01 704 2012 1 8.21418e-01 7.22432e-01 954 2012 2 7.04713e-01 1.81006e-01 192 2012 3 1.18433e+00 6.93133e-01 674 2012 4 1.27867e+00 1.12696e+00 777 2012 5 7.73317e-01 2.29442e-01 306 2012 6 2.91824e+00 1.84839e+00 76 2012 7 3.73611e+00 6.06652e-01 4 2012 8 6.08368e+00 2.15907e+00 44 2012 9 2.36452e+00 1.13937e+00 251 2012 10 3.54705e+00 1.56097e+00 309 2012 11 9.02196e-01 1.70921e-01 722 2012 12 9.61209e-01 2.36148e-01 405 2013 1 1.02325e+00 7.81348e-01 610 2013 2 9.44885e-01 1.63519e-01 379 2013 3 1.31547e+00 7.87769e-01 564 2013 4 7.25234e+00 1.55856e+00 35 2013 5 3.13695e+00 2.25686e+00 335 2013 6 6.05191e+00 1.74173e+00 173 2013 7 4.07007e+00 1.54365e+00 56 2013 8 5.68951e+00 1.80661e+00 91 2013 9 4.00884e+00 1.29160e+00 43 2013 10 1.75112e+00 6.88861e-01 711 2013 11 1.53674e+00 4.83933e-01 458 2013 12 1.01616e+00 1.98081e-01 605 2014 1 1.22759e+00 4.77782e-01 298 2014 2 2.54667e+00 2.00035e+00 463 2014 3 1.97719e+00 1.00407e+00 441 2014 4 3.02943e+00 1.01560e+00 101 2014 5 3.40840e+00 8.75279e-01 61 2014 6 1.67765e+00 4.77201e-01 104 2014 7 2.63787e+00 1.34460e+00 403 2014 8 1.30753e+00 2.75814e-01 292 2014 9 5.76142e-01 4.27105e-01 43 2014 10 1.59170e+00 7.10648e-01 1137 2014 11 1.02990e+00 4.96890e-01 816 2014 12 7.23775e-01 3.91863e-01 452 2015 1 1.43987e+00 6.67083e-01 642 2015 2 2.17332e+00 1.48870e+00 499 2015 3 2.91965e+00 1.56742e+00 328 2015 4 4.12071e+00 2.27219e+00 100 2015 5 1.97246e+00 1.34861e+00 430 2015 6 1.09938e+00 4.04554e-01 256 2015 7 1.22205e+00 4.60573e-01 176 2015 8 5.25626e+00 2.31938e+00 26 2015 9 2.45018e+00 1.42085e+00 188 2015 10 1.31379e+00 4.37460e-01 546 2015 11 1.93688e+00 1.17768e+00 509 2015 12 1.23698e+00 5.76510e-01 554 2016 1 1.30894e+00 4.29530e-01 499 2016 2 2.62435e+00 2.30595e+00 704 2016 3 3.13215e+00 1.89669e+00 478 2016 4 2.31530e+00 7.12332e-01 228 2016 5 2.78249e+00 1.74227e+00 553 2016 6 1.17457e+00 3.13820e-01 576 2016 7 1.36513e+00 3.20761e-01 646 2016 8 1.83523e+00 1.27530e+00 347 2016 9 2.26304e+00 1.14670e+00 462 2016 10 1.53098e+00 7.61874e-01 784 2016 11 9.78195e-01 2.78530e-01 852 2016 12 8.21250e-01 3.03757e-01 781 2017 1 1.07915e+00 5.34398e-01 519 2017 2 2.79841e+00 1.19166e+00 831 2017 3 1.40824e+00 8.80551e-01 798 2017 4 1.22808e+00 7.86690e-01 661 2017 5 1.07733e+00 2.96304e-01 389 2017 6 1.03317e+00 3.13690e-01 193 2017 7 1.90174e+00 4.33778e-01 80 2017 8 2.50694e+00 1.52218e+00 362 2017 9 2.32148e+00 1.54248e+00 221 2017 10 2.38105e+00 8.26724e-01 71 2017 11 1.83755e+00 8.14819e-01 1033 2017 12 1.11434e+00 2.76797e-01 469 2018 1 9.48659e-01 1.77515e-01 575 2018 2 2.39920e+00 1.50717e+00 507 2018 3 1.50232e+00 7.44526e-01 700 2018 4 1.74371e+00 1.06079e+00 550 2018 5 2.28882e+00 1.79998e+00 354 2018 6 1.99382e+00 9.74982e-01 256 2018 7 1.77092e+00 1.78456e+00 6 2018 8 nan nan 0 2018 9 2.03786e+00 1.53082e+00 625 2018 10 1.58001e+00 6.51738e-01 927 2018 11 1.18487e+00 4.92952e-01 221 2018 12 2.54674e+00 1.83421e+00 357 2019 1 3.38279e+00 1.89253e+00 94 2019 2 8.32668e+00 5.77970e-01 14 2019 3 3.46777e+00 1.50942e+00 561 2019 4 2.19320e+00 6.85669e-01 384 2019 5 1.45130e+00 5.35304e-01 641 2019 6 8.77531e-01 4.57992e-01 134 2019 7 1.31063e+00 8.12013e-01 138 2019 8 2.63412e+00 9.20627e-01 173 2019 9 1.37874e+00 6.72603e-01 462 2019 10 1.42203e+00 6.54992e-01 536 2019 11 1.10531e+00 3.96203e-01 568 2019 12 1.24827e+00 6.23604e-01 387 2020 1 1.53592e+00 8.04929e-01 534 2020 2 1.58992e+00 6.23671e-01 530 2020 3 2.90672e+00 1.94962e+00 482 2020 4 2.80240e+00 1.12183e+00 260 2020 5 2.43090e+00 1.13503e+00 523 2020 6 2.51250e+00 1.47779e+00 210 2020 7 1.69086e+00 8.77323e-01 42 2020 8 2.45257e+00 8.21901e-01 218 2020 9 1.60407e+00 1.23876e+00 89 2020 10 2.65758e+00 1.48954e+00 413 2020 11 1.53664e+00 3.46686e-01 648 2020 12 1.28454e+00 5.26403e-01 483 2021 1 1.07938e+00 2.33296e-01 155 2021 2 2.88390e+00 2.00668e+00 362 2021 3 3.96107e+00 1.93195e+00 201 2021 4 5.13042e+00 2.06588e+00 239 2021 5 2.61497e+00 1.25239e+00 415 2021 6 1.45504e+00 6.85604e-01 180 2021 7 3.34330e+00 2.35973e+00 142 2021 8 1.21256e-02 1.05888e-02 13 2021 9 4.11760e+00 2.88956e+00 18 2021 10 2.48983e+00 1.49101e+00 472 2021 11 1.52608e+00 5.93741e-01 669 2021 12 1.64069e+00 9.02847e-01 587 2022 1 2.40903e+00 1.36322e+00 487 2022 2 1.59907e+00 8.19247e-01 757 2022 3 2.01486e+00 1.38950e+00 622 2022 4 nan nan 0 2022 5 1.90072e+00 6.63648e-01 320 2022 6 1.28155e+00 4.30653e-01 326 2022 7 1.28094e+00 8.67386e-01 270 2022 8 2.27522e+00 1.73174e+00 245 2022 9 1.63520e+00 1.36736e+00 209 2022 10 7.75945e-01 2.49220e-01 1021 2022 11 1.41020e+00 5.67697e-01 289 2022 12 1.25376e+00 8.11627e-01 647 2023 1 8.02920e-01 2.24494e-01 732 2023 2 1.30323e+00 8.32874e-01 507 2023 3 2.10682e+00 1.21768e+00 388 2023 4 1.59347e+00 1.34897e+00 461 2023 5 1.09213e+00 1.24646e-01 128 2023 6 1.07923e+00 2.91678e-01 284 2023 7 1.61748e+00 1.40351e+00 528 2023 8 1.62698e+00 9.31931e-01 248 2023 9 2.78350e+00 1.70974e+00 290 2023 10 1.42652e+00 8.55552e-01 718 2023 11 1.11027e+00 6.43495e-01 609 2023 12 1.88309e+00 1.17860e+00 267 2024 1 1.84470e+00 5.58876e-01 64 2024 2 2.68290e+00 1.26273e+00 473 2024 3 2.24306e+00 1.35963e+00 315 2024 4 nan nan 0