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 1.15025e+00 3.44837e-01 658 2002 8 1.46557e+00 4.99281e-01 593 2002 9 2.79944e+00 1.75320e+00 702 2002 10 1.91050e+00 4.87039e-01 782 2002 11 1.81314e+00 3.18900e-01 908 2002 12 1.31376e+00 2.95045e-01 561 2003 1 1.23226e+00 2.36865e-01 724 2003 2 1.14703e+00 1.39445e-01 352 2003 3 1.04498e+00 1.24549e-01 439 2003 4 9.48088e-01 1.63737e-01 293 2003 5 7.37603e-01 2.42006e-01 182 2003 6 1.29404e+00 3.36925e-01 375 2003 7 1.17068e+00 2.86126e-01 274 2003 8 1.19275e+00 5.00788e-01 480 2003 9 2.03967e+00 4.18594e-01 849 2003 10 2.80292e+00 1.13169e+00 664 2003 11 1.71442e+00 5.45895e-01 717 2003 12 1.61941e+00 3.30138e-01 579 2004 1 2.08106e+00 7.97298e-01 531 2004 2 1.72079e+00 5.11072e-01 518 2004 3 9.69536e-01 1.97881e-01 885 2004 4 8.67850e-01 2.67896e-01 310 2004 5 8.38826e-01 1.98877e-01 359 2004 6 9.44194e-01 4.50739e-01 540 2004 7 1.35321e+00 4.00308e-01 174 2004 8 2.05146e+00 3.80113e-01 462 2004 9 1.84902e+00 4.47175e-01 709 2004 10 2.13263e+00 6.75220e-01 680 2004 11 1.71390e+00 3.93996e-01 365 2004 12 1.97124e+00 9.07223e-01 615 2005 1 1.48274e+00 2.53764e-01 564 2005 2 1.53927e+00 2.35240e-01 702 2005 3 1.13887e+00 1.47499e-01 727 2005 4 9.76839e-01 3.96169e-01 213 2005 5 8.00539e-01 1.76772e-01 165 2005 6 1.03889e+00 2.94182e-01 572 2005 7 1.73962e+00 8.70509e-01 241 2005 8 2.02999e+00 9.01860e-01 330 2005 9 2.13155e+00 5.45545e-01 805 2005 10 2.11534e+00 8.50932e-01 883 2005 11 1.56159e+00 3.47496e-01 581 2005 12 1.69793e+00 4.34738e-01 861 2006 1 1.74141e+00 3.41820e-01 527 2006 2 1.69284e+00 2.81224e-01 446 2006 3 1.68681e+00 2.78873e-01 593 2006 4 1.08814e+00 3.98685e-01 490 2006 5 7.52807e-01 1.69141e-01 426 2006 6 7.69283e-01 2.05470e-01 699 2006 7 1.58384e+00 3.99379e-01 282 2006 8 1.29414e+00 3.32971e-01 135 2006 9 2.31088e+00 1.35464e+00 780 2006 10 1.83634e+00 4.08600e-01 546 2006 11 1.79684e+00 2.99833e-01 955 2006 12 1.55040e+00 3.76744e-01 542 2007 1 1.64789e+00 2.55789e-01 723 2007 2 1.15877e+00 2.17566e-01 853 2007 3 1.24968e+00 1.54270e-01 551 2007 4 1.20174e+00 1.30458e-01 181 2007 5 1.01147e+00 2.07750e-01 140 2007 6 1.18734e+00 4.49399e-01 373 2007 7 1.02678e+00 1.77535e-01 56 2007 8 9.31070e-01 2.78800e-01 664 2007 9 1.85938e+00 4.83215e-01 922 2007 10 2.97314e+00 1.15946e+00 827 2007 11 2.29003e+00 1.75692e+00 790 2007 12 2.05221e+00 2.41439e-01 597 2008 1 1.66368e+00 3.25178e-01 448 2008 2 1.85528e+00 3.89320e-01 643 2008 3 1.46772e+00 3.85650e-01 621 2008 4 8.28696e-01 3.50083e-01 287 2008 5 2.16397e+00 4.56244e-01 110 2008 6 1.93031e+00 2.07510e-01 61 2008 7 nan nan 0 2008 8 1.29247e+00 1.89371e-01 138 2008 9 1.94684e+00 3.84831e-01 105 2008 10 2.05919e+00 4.76521e-01 614 2008 11 1.93995e+00 3.62332e-01 595 2008 12 1.29812e+00 2.99968e-01 1051 2009 1 1.50829e+00 2.77545e-01 742 2009 2 1.60455e+00 2.39489e-01 443 2009 3 1.37343e+00 1.53915e-01 361 2009 4 7.71782e-01 1.93641e-01 255 2009 5 9.11069e-01 2.18716e-01 272 2009 6 9.31468e-01 1.98259e-01 128 2009 7 nan nan 0 2009 8 8.92665e-01 2.35782e-01 157 2009 9 1.36565e+00 3.35489e-01 546 2009 10 1.70484e+00 2.05516e-01 448 2009 11 2.03780e+00 4.78278e-01 624 2009 12 1.87036e+00 3.28722e-01 768 2010 1 1.67722e+00 2.70555e-01 736 2010 2 1.31060e+00 1.62285e-01 383 2010 3 9.23541e-01 2.02813e-01 503 2010 4 1.10347e+00 1.43558e-01 145 2010 5 8.09807e-01 2.00832e-01 238 2010 6 8.98374e-01 9.69078e-02 64 2010 7 1.11585e+00 4.44063e-01 360 2010 8 1.31687e+00 4.17082e-01 315 2010 9 2.04793e+00 4.22230e-01 381 2010 10 1.53282e+00 5.00855e-01 927 2010 11 1.31346e+00 2.01173e-01 1279 2010 12 1.54253e+00 1.44618e-01 668 2011 1 1.35811e+00 1.46214e-01 704 2011 2 1.18363e+00 2.39195e-01 405 2011 3 1.25251e+00 2.12657e-01 605 2011 4 1.15488e+00 1.95898e-01 369 2011 5 8.72142e-01 2.16134e-01 341 2011 6 1.32452e+00 3.71636e-01 189 2011 7 8.88810e-01 3.60915e-01 370 2011 8 1.12437e+00 3.25127e-01 363 2011 9 1.67301e+00 2.89583e-01 731 2011 10 1.47135e+00 2.63913e-01 900 2011 11 1.59448e+00 5.30075e-01 640 2011 12 1.35369e+00 1.91305e-01 811 2012 1 1.22889e+00 2.15264e-01 872 2012 2 1.47980e+00 3.81807e-01 637 2012 3 1.23977e+00 1.95067e-01 614 2012 4 1.09821e+00 2.41369e-01 319 2012 5 1.06039e+00 3.29555e-01 64 2012 6 1.70676e+00 2.64856e-01 256 2012 7 8.69480e-01 2.77906e-01 285 2012 8 1.04372e+00 4.44187e-01 233 2012 9 1.43260e+00 2.81317e-01 556 2012 10 1.39187e+00 3.94692e-01 448 2012 11 1.37480e+00 2.09851e-01 634 2012 12 1.44443e+00 2.73288e-01 361 2013 1 1.72550e+00 5.66890e-01 775 2013 2 1.26855e+00 4.35704e-01 733 2013 3 1.31071e+00 4.57220e-01 524 2013 4 1.12664e+00 3.64028e-01 136 2013 5 9.91487e-01 2.39382e-01 256 2013 6 1.33645e+00 3.11988e-01 272 2013 7 6.91139e-01 2.57618e-01 371 2013 8 9.20375e-01 3.75100e-01 475 2013 9 1.22217e+00 3.47508e-01 803 2013 10 1.40717e+00 2.40599e-01 902 2013 11 1.31278e+00 2.27517e-01 637 2013 12 1.55288e+00 3.50229e-01 883 2014 1 1.16070e+00 2.04219e-01 581 2014 2 1.06838e+00 1.18062e-01 604 2014 3 9.00726e-01 1.76360e-01 598 2014 4 8.95189e-01 3.56037e-01 358 2014 5 7.56642e-01 2.01787e-01 278 2014 6 1.35651e+00 3.44073e-01 475 2014 7 1.43647e+00 5.95187e-01 404 2014 8 1.02152e+00 3.58880e-01 378 2014 9 1.35834e+00 4.88787e-01 800 2014 10 1.45838e+00 2.13704e-01 959 2014 11 1.51922e+00 2.54872e-01 835 2014 12 1.43116e+00 1.38535e-01 1047 2015 1 1.41199e+00 1.18995e-01 688 2015 2 1.39560e+00 1.72493e-01 489 2015 3 1.03536e+00 1.00865e-01 543 2015 4 1.21466e+00 2.13469e-01 443 2015 5 7.38539e-01 1.84001e-01 237 2015 6 1.15473e+00 3.05494e-01 508 2015 7 1.21724e+00 3.62916e-01 286 2015 8 1.26182e+00 5.27330e-01 516 2015 9 1.63653e+00 3.74612e-01 551 2015 10 1.83443e+00 3.02638e-01 568 2015 11 1.73943e+00 2.06671e-01 880 2015 12 1.74287e+00 2.79626e-01 826 2016 1 1.77905e+00 2.27330e-01 832 2016 2 1.77437e+00 2.71484e-01 1151 2016 3 1.43672e+00 3.77857e-01 620 2016 4 7.65737e-01 2.54646e-01 619 2016 5 1.04732e+00 3.24874e-01 552 2016 6 1.39968e+00 3.26026e-01 288 2016 7 9.99650e-01 3.54138e-01 404 2016 8 7.08018e-01 1.81603e-01 544 2016 9 1.37371e+00 3.91649e-01 684 2016 10 1.46239e+00 3.58710e-01 1158 2016 11 1.67605e+00 3.62834e-01 720 2016 12 1.46878e+00 2.03883e-01 634 2017 1 1.48984e+00 2.51358e-01 552 2017 2 1.15435e+00 1.42085e-01 448 2017 3 9.50783e-01 1.65349e-01 811 2017 4 8.43481e-01 1.93998e-01 143 2017 5 1.16730e+00 2.70589e-01 143 2017 6 1.00323e+00 2.84263e-01 657 2017 7 1.04081e+00 3.39537e-01 416 2017 8 1.36213e+00 3.42750e-01 368 2017 9 1.80946e+00 2.48251e-01 279 2017 10 1.56994e+00 4.66318e-01 734 2017 11 1.66372e+00 1.69441e-01 699 2017 12 1.49643e+00 1.75519e-01 895 2018 1 1.40167e+00 2.63305e-01 1024 2018 2 1.58640e+00 3.74683e-01 466 2018 3 1.13400e+00 2.68592e-01 824 2018 4 1.31301e+00 1.64883e-01 218 2018 5 9.69705e-01 1.98178e-01 319 2018 6 1.16376e+00 3.11068e-01 316 2018 7 7.61765e-01 2.15442e-01 408 2018 8 1.07358e+00 3.20015e-01 551 2018 9 1.53686e+00 4.09861e-01 510 2018 10 1.75197e+00 2.94531e-01 287 2018 11 1.61330e+00 2.48566e-01 422 2018 12 1.37512e+00 1.47019e-01 773 2019 1 1.68601e+00 2.03861e-01 328 2019 2 1.26941e+00 1.96200e-01 701 2019 3 1.04771e+00 1.83779e-01 941 2019 4 9.28886e-01 3.11201e-01 421 2019 5 8.15559e-01 1.47059e-01 536 2019 6 8.25486e-01 2.53085e-01 787 2019 7 1.11004e+00 5.84407e-01 649 2019 8 8.47072e-01 2.44827e-01 692 2019 9 1.52471e+00 5.11816e-01 897 2019 10 1.61688e+00 3.79471e-01 663 2019 11 1.54234e+00 2.22860e-01 632 2019 12 1.52730e+00 1.76749e-01 471 2020 1 1.53014e+00 2.78338e-01 780 2020 2 1.52598e+00 2.14029e-01 769 2020 3 1.14306e+00 2.60704e-01 419 2020 4 6.00456e-01 8.58450e-02 215 2020 5 1.11030e+00 5.51024e-01 519 2020 6 1.56086e+00 6.58704e-01 788 2020 7 7.76823e-01 3.21322e-01 681 2020 8 2.10293e+00 1.11125e+00 185 2020 9 1.46288e+00 3.10359e-01 726 2020 10 1.60787e+00 3.78813e-01 1370 2020 11 1.66155e+00 3.46615e-01 454 2020 12 1.99467e+00 2.05543e-01 682 2021 1 1.89701e+00 3.10259e-01 1085 2021 2 1.70644e+00 2.67456e-01 843 2021 3 1.77561e+00 5.01236e-01 534 2021 4 8.73461e-01 3.83223e-01 565 2021 5 6.93927e-01 1.88279e-01 448 2021 6 1.20954e+00 3.28243e-01 460 2021 7 7.51497e-01 2.14855e-01 492 2021 8 1.22954e+00 3.23043e-01 567 2021 9 1.51377e+00 2.55511e-01 830 2021 10 1.42946e+00 3.14739e-01 1334 2021 11 1.46029e+00 3.66265e-01 799 2021 12 1.44421e+00 2.88615e-01 506 2022 1 1.50913e+00 2.42887e-01 780 2022 2 1.06428e+00 2.19080e-01 821 2022 3 1.37787e+00 2.31369e-01 277 2022 4 1.22051e+00 1.28304e-01 25 2022 5 1.02364e+00 1.93340e-01 243 2022 6 6.57930e-01 1.23042e-01 375 2022 7 6.07839e-01 1.53752e-01 225 2022 8 1.33821e+00 5.14498e-01 393 2022 9 1.41990e+00 4.14921e-01 597 2022 10 1.51263e+00 2.86233e-01 616 2022 11 1.17707e+00 1.49634e-01 503 2022 12 1.35529e+00 2.66587e-01 819 2023 1 1.01566e+00 1.07840e-01 431 2023 2 1.34180e+00 2.57139e-01 576 2023 3 8.98448e-01 1.78544e-01 850 2023 4 8.43764e-01 2.28758e-01 832 2023 5 8.79212e-01 2.06201e-01 452 2023 6 7.58684e-01 1.27850e-01 908 2023 7 8.47240e-01 2.01284e-01 789 2023 8 1.21819e+00 2.93977e-01 373 2023 9 1.59639e+00 2.68944e-01 780 2023 10 1.51174e+00 2.87675e-01 709 2023 11 1.56129e+00 2.94590e-01 504 2023 12 1.52923e+00 2.98307e-01 835 2024 1 1.40657e+00 2.14470e-01 865 2024 2 1.37860e+00 1.82271e-01 1065 2024 3 1.22411e+00 1.78425e-01 866 2024 4 1.21600e+00 9.49150e-02 188