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 3.75813e+00 1.60995e-01 64 2002 8 3.62112e+00 9.95212e-01 192 2002 9 6.81049e+00 1.64711e+00 371 2002 10 1.08533e+01 5.46575e+00 862 2002 11 4.69916e+00 1.02473e+00 581 2002 12 1.99197e+01 1.11548e+01 575 2003 1 4.56733e+01 2.41585e+01 634 2003 2 1.22394e+01 7.23648e+00 544 2003 3 4.46326e+00 1.22551e+00 115 2003 4 9.01082e+00 2.89353e+00 510 2003 5 4.02401e+00 2.27830e+00 113 2003 6 2.35710e+00 4.96643e-01 181 2003 7 1.14177e+01 2.99759e+00 201 2003 8 1.93775e+01 6.19672e+00 132 2003 9 2.62337e+01 8.55624e+00 338 2003 10 8.65309e+00 2.28534e+00 430 2003 11 7.26648e+00 1.94898e+00 786 2003 12 4.36341e+00 5.91355e-01 724 2004 1 5.36284e+00 4.18671e+00 710 2004 2 5.05838e+00 1.33898e+00 443 2004 3 4.26102e+00 1.71225e+00 551 2004 4 4.05716e+00 1.21841e+00 375 2004 5 2.28026e+00 4.72654e-01 409 2004 6 2.61207e+00 3.58092e-01 401 2004 7 3.53302e+00 5.09046e-01 74 2004 8 1.88959e+01 2.52160e+00 61 2004 9 4.89035e+01 1.11411e+01 94 2004 10 5.86423e+01 2.44985e+01 451 2004 11 1.64649e+01 4.42826e+00 682 2004 12 1.08291e+01 5.18840e+00 466 2005 1 9.61325e+00 3.15556e+00 614 2005 2 7.84247e+00 2.57060e+00 644 2005 3 5.52622e+00 1.85597e+00 259 2005 4 9.00524e+00 3.93908e+00 479 2005 5 1.89523e+00 6.08060e-01 204 2005 6 3.64752e+00 4.95773e-01 209 2005 7 5.07556e+00 4.71659e+00 220 2005 8 4.75207e+00 8.23768e-01 166 2005 9 4.48038e+00 1.23625e+00 256 2005 10 4.45113e+00 1.16053e+00 596 2005 11 4.23529e+00 8.87354e-01 706 2005 12 2.70399e+00 6.44363e-01 717 2006 1 3.94581e+00 3.23293e+00 677 2006 2 2.77342e+00 6.30574e-01 928 2006 3 3.05727e+00 5.38221e-01 914 2006 4 2.15750e+00 6.59828e-01 592 2006 5 1.77261e+00 3.15155e-01 502 2006 6 2.01946e+00 5.40042e-01 384 2006 7 1.88862e+00 2.07914e-01 148 2006 8 3.11689e+00 5.02041e-01 256 2006 9 9.15833e+00 3.68448e+00 403 2006 10 1.01792e+01 4.55097e+00 762 2006 11 4.92094e+00 3.28062e+00 542 2006 12 3.89151e+00 1.35943e+00 270 2007 1 3.73607e+00 3.66345e-01 345 2007 2 3.50023e+00 5.44278e-01 512 2007 3 4.59890e+00 1.21526e+00 621 2007 4 5.52290e+00 3.53549e+00 502 2007 5 1.91070e+00 6.47443e-01 265 2007 6 1.46124e+00 2.63749e-01 187 2007 7 3.93008e+00 8.73524e-01 123 2007 8 4.02817e+00 1.65485e+00 250 2007 9 8.31956e+00 4.48203e+00 531 2007 10 7.06650e+00 2.12571e+00 341 2007 11 5.22549e+00 1.06090e+00 720 2007 12 3.88645e+00 6.90424e-01 815 2008 1 7.04321e+00 3.50569e+00 437 2008 2 4.43271e+00 2.00048e+00 496 2008 3 3.54754e+00 1.88763e+00 549 2008 4 2.11687e+00 9.46183e-01 532 2008 5 1.69412e+00 5.66098e-01 329 2008 6 2.72455e+00 8.06447e-01 321 2008 7 2.95056e+00 6.69463e-01 279 2008 8 3.15825e+00 1.06715e+00 201 2008 9 2.14004e+00 9.48249e-01 366 2008 10 4.47343e+00 2.71413e+00 719 2008 11 3.76605e+00 1.29688e+00 1036 2008 12 3.19418e+00 9.31034e-01 774 2009 1 3.19608e+00 1.26062e+00 720 2009 2 2.86191e+00 7.10071e-01 705 2009 3 2.52259e+00 5.89113e-01 956 2009 4 4.00664e+00 9.21520e-01 294 2009 5 1.79205e+00 3.73448e-01 283 2009 6 1.83400e+00 5.54442e-01 78 2009 7 4.40583e+00 1.61014e+00 165 2009 8 5.65641e+00 9.22915e-01 200 2009 9 2.71284e+00 1.37123e+00 259 2009 10 7.75422e+00 2.64144e+00 784 2009 11 4.34745e+00 2.06106e+00 465 2009 12 3.37935e+00 9.17444e-01 320 2010 1 3.16458e+00 1.08321e+00 621 2010 2 3.00682e+00 9.29390e-01 577 2010 3 3.11966e+00 5.81667e-01 756 2010 4 4.47503e+00 9.17411e-01 504 2010 5 4.53755e+00 5.23070e-01 341 2010 6 3.78740e+00 1.22237e+00 359 2010 7 3.00256e+00 2.47129e+00 79 2010 8 8.82545e+00 1.28236e+00 128 2010 9 1.09049e+01 4.21499e+00 478 2010 10 7.16985e+00 2.76214e+00 1225 2010 11 4.98759e+00 1.78204e+00 977 2010 12 4.41251e+00 1.72584e+00 998 2011 1 2.41436e+00 4.07392e-01 571 2011 2 3.76045e+00 1.15889e+00 726 2011 3 2.85403e+00 7.00817e-01 863 2011 4 5.09819e+00 2.27103e+00 645 2011 5 3.65226e+00 1.10327e+00 414 2011 6 3.86472e+00 1.46787e+00 258 2011 7 5.12229e+00 1.02252e+00 256 2011 8 1.11241e+01 2.37542e+00 125 2011 9 8.65135e+00 2.15089e+00 175 2011 10 7.99555e+00 1.55598e+00 645 2011 11 6.58292e+00 2.61577e+00 696 2011 12 3.00323e+00 8.45104e-01 988 2012 1 2.66014e+00 6.72705e-01 654 2012 2 4.15199e+00 1.90131e+00 528 2012 3 4.09025e+00 1.39713e+00 746 2012 4 2.51891e+00 5.70088e-01 368 2012 5 2.13565e+00 3.38216e-01 353 2012 6 nan nan 0 2012 7 4.92188e+00 1.58283e+00 94 2012 8 8.39847e+00 9.52317e-01 201 2012 9 2.54777e+01 9.10259e+00 272 2012 10 2.35229e+01 6.60910e+00 471 2012 11 7.29956e+00 2.49606e+00 678 2012 12 6.15831e+00 1.69640e+00 441 2013 1 4.60246e+00 2.52517e+00 680 2013 2 3.88429e+00 9.06309e-01 624 2013 3 4.32463e+00 1.75314e+00 675 2013 4 3.45537e+00 5.58936e-01 381 2013 5 3.19605e+00 1.49296e+00 406 2013 6 4.51785e+00 1.09461e+00 284 2013 7 5.60516e+00 3.87097e+00 315 2013 8 6.78476e+00 1.95934e+00 418 2013 9 7.16906e+00 2.73787e+00 375 2013 10 4.02321e+00 1.33073e+00 618 2013 11 3.08110e+00 6.91963e-01 168 2013 12 4.37922e+00 2.04180e+00 615 2014 1 4.23912e+00 1.46964e+00 541 2014 2 4.39002e+00 9.58910e-01 582 2014 3 3.35265e+00 1.33398e+00 523 2014 4 2.71624e+00 1.02492e+00 338 2014 5 1.99342e+00 6.56188e-01 498 2014 6 2.65325e+00 8.96951e-01 295 2014 7 2.84311e+00 2.94327e-01 248 2014 8 3.68629e+00 8.04729e-01 306 2014 9 4.67366e+00 1.50346e+00 308 2014 10 1.19964e+01 3.32111e+00 922 2014 11 7.27740e+00 2.21377e+00 608 2014 12 5.17811e+00 2.49556e+00 671 2015 1 6.60488e+00 5.14478e+00 332 2015 2 3.83630e+00 1.09864e+00 685 2015 3 5.73330e+00 2.89275e+00 585 2015 4 8.46859e+00 4.24039e+00 269 2015 5 1.98100e+00 1.00770e+00 600 2015 6 2.22775e+00 4.34239e-01 255 2015 7 2.89674e+00 5.06686e-01 188 2015 8 2.03861e+01 1.39046e+01 185 2015 9 7.92492e+00 7.18449e+00 111 2015 10 9.48977e+00 2.43081e+00 576 2015 11 6.86411e+00 2.62051e+00 530 2015 12 4.87397e+00 8.67927e-01 300 2016 1 4.06898e+00 1.80597e+00 614 2016 2 5.32126e+00 2.33669e+00 880 2016 3 3.78371e+00 1.16666e+00 457 2016 4 1.93835e+00 6.46320e-01 361 2016 5 2.12766e+00 5.62599e-01 426 2016 6 2.82257e+00 3.95029e-01 103 2016 7 2.81958e+00 8.40148e-01 338 2016 8 2.29315e+00 1.08947e+00 292 2016 9 5.62997e+00 1.47355e+00 529 2016 10 6.09464e+00 3.50865e+00 417 2016 11 3.51208e+00 6.21096e-01 632 2016 12 3.49063e+00 8.04766e-01 656 2017 1 3.48706e+00 1.62715e+00 623 2017 2 2.65747e+00 4.41260e-01 1025 2017 3 2.58356e+00 5.71808e-01 765 2017 4 2.11426e+00 5.34781e-01 393 2017 5 3.21517e+00 1.44866e+00 403 2017 6 1.92005e+00 2.12862e-01 128 2017 7 1.47567e+00 5.00953e-01 314 2017 8 2.95072e+00 1.85120e+00 336 2017 9 1.34743e+02 2.44536e+02 376 2017 10 7.39653e+00 4.36307e+00 256 2017 11 5.64888e+00 1.07609e+00 716 2017 12 3.53109e+00 8.74420e-01 646 2018 1 4.41589e+00 1.08559e+00 631 2018 2 4.15329e+00 1.01196e+00 373 2018 3 3.16440e+00 6.18130e-01 899 2018 4 2.67314e+00 1.08351e+00 651 2018 5 2.17420e+00 7.45150e-01 296 2018 6 3.67260e+00 8.86515e-01 311 2018 7 4.36488e+00 1.26587e+00 142 2018 8 1.01484e+01 6.13473e+00 366 2018 9 1.77898e+01 6.30925e+00 491 2018 10 5.56798e+00 3.36972e+00 972 2018 11 4.01383e+00 9.39387e-01 407 2018 12 3.92908e+00 1.20057e+00 542 2019 1 5.17990e+00 1.63564e+00 667 2019 2 4.71562e+00 8.02878e-01 498 2019 3 5.93912e+00 2.74998e+00 664 2019 4 2.97503e+00 7.49634e-01 419 2019 5 2.02426e+00 4.17762e-01 512 2019 6 2.14145e+00 9.11493e-01 223 2019 7 5.21209e+00 1.84261e+00 342 2019 8 9.55566e+00 1.45691e+00 105 2019 9 6.83390e+00 2.58759e+00 272 2019 10 3.96690e+00 1.05167e+00 403 2019 11 3.65543e+00 5.68734e-01 386 2019 12 3.98125e+00 7.65009e-01 191 2020 1 3.91593e+00 1.70914e+00 636 2020 2 3.71718e+00 1.76835e+00 488 2020 3 3.14206e+00 1.14673e+00 662 2020 4 6.65915e+00 2.24895e+00 270 2020 5 2.46401e+00 5.13047e-01 684 2020 6 2.69087e+00 4.51057e-01 310 2020 7 2.99931e+00 1.97500e-01 69 2020 8 3.30470e+00 3.77934e-01 233 2020 9 7.57549e+00 9.49915e-01 256 2020 10 4.54346e+00 8.59750e-01 194 2020 11 7.94496e+00 3.96392e+00 588 2020 12 3.98080e+00 9.90592e-01 361 2021 1 3.74904e+00 1.29479e+00 311 2021 2 2.94504e+00 6.45682e-01 595 2021 3 3.30120e+00 6.88701e-01 559 2021 4 2.41815e+00 6.09822e-01 579 2021 5 2.40836e+00 4.88837e-01 693 2021 6 2.82773e+00 3.28140e-01 240 2021 7 3.39972e+00 2.29383e+00 116 2021 8 4.25958e+00 1.91337e+00 194 2021 9 5.61972e+00 2.70105e+00 395 2021 10 6.93357e+00 2.64044e+00 572 2021 11 4.45384e+00 1.42259e+00 425 2021 12 4.32089e+00 1.43022e+00 813 2022 1 4.04644e+00 1.51234e+00 699 2022 2 2.20197e+00 7.22856e-01 796 2022 3 4.39156e+00 2.59019e+00 653 2022 4 2.34896e+00 1.27501e-01 19 2022 5 2.17594e+00 5.05420e-01 557 2022 6 2.09114e+00 8.32773e-01 237 2022 7 3.11083e+00 5.73853e-01 193 2022 8 2.70497e+00 6.34280e-01 284 2022 9 5.10694e+00 1.26155e+00 406 2022 10 1.30733e+01 2.32456e+01 537 2022 11 5.64482e+00 1.38819e+00 474 2022 12 5.98299e+00 1.57077e+00 516 2023 1 3.14419e+00 8.29028e-01 850 2023 2 2.21550e+00 3.57372e-01 879 2023 3 2.56456e+00 7.33689e-01 745 2023 4 2.05487e+00 3.70264e-01 450 2023 5 1.52467e+00 2.67934e-01 406 2023 6 1.61897e+00 2.57850e-01 145 2023 7 2.56565e+00 1.24679e+00 204 2023 8 2.68811e+00 5.03562e-01 359 2023 9 2.85150e+00 1.18686e+00 668 2023 10 2.81633e+00 1.00024e+00 591 2023 11 3.67792e+00 1.36155e+00 722 2023 12 2.09637e+00 5.82147e-01 259 2024 1 1.94053e+00 1.27223e+00 233 2024 2 2.43506e+00 4.84807e-01 721 2024 3 4.03020e+00 9.03780e-01 424 2024 4 nan nan 0