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 6.11139e+00 2.14387e+00 847 2002 8 5.42161e+00 1.25823e+00 670 2002 9 4.26388e+00 5.70315e-01 1001 2002 10 3.64174e+00 9.62062e-01 461 2002 11 3.54164e+00 5.90345e-01 835 2002 12 4.33051e+00 5.10310e-01 378 2003 1 4.59695e+00 7.27450e-01 873 2003 2 4.26926e+00 7.31781e-01 576 2003 3 5.61875e+00 1.03359e+00 448 2003 4 4.70290e+00 1.08290e+00 236 2003 5 6.35329e+00 9.86611e-01 63 2003 6 6.84450e+00 2.35466e+00 573 2003 7 5.77225e+00 1.78796e+00 370 2003 8 5.44688e+00 1.23788e+00 627 2003 9 4.10771e+00 1.05219e+00 763 2003 10 3.74553e+00 1.38599e+00 798 2003 11 3.24932e+00 4.75598e-01 603 2003 12 4.30862e+00 7.55015e-01 545 2004 1 3.63907e+00 5.59968e-01 494 2004 2 3.68172e+00 6.22930e-01 536 2004 3 4.36770e+00 9.38074e-01 620 2004 4 5.54583e+00 1.38884e+00 256 2004 5 6.58358e+00 9.31633e-01 322 2004 6 6.95850e+00 1.45236e+00 690 2004 7 5.59780e+00 1.91133e+00 761 2004 8 5.15307e+00 1.64024e+00 949 2004 9 3.80814e+00 7.38096e-01 751 2004 10 4.33900e+00 8.92278e-01 544 2004 11 3.09945e+00 5.32745e-01 256 2004 12 3.94136e+00 9.93952e-01 595 2005 1 4.17305e+00 6.11485e-01 640 2005 2 3.42475e+00 5.72511e-01 458 2005 3 4.35916e+00 9.69049e-01 724 2005 4 5.71610e+00 1.08464e+00 383 2005 5 5.24707e+00 1.40727e+00 305 2005 6 6.68158e+00 1.78714e+00 427 2005 7 7.58345e+00 1.67231e+00 69 2005 8 5.17005e+00 1.69666e+00 637 2005 9 3.38304e+00 9.08107e-01 907 2005 10 3.85245e+00 9.24815e-01 1039 2005 11 3.62070e+00 9.63434e-01 446 2005 12 3.64474e+00 6.76183e-01 915 2006 1 3.46004e+00 6.48067e-01 591 2006 2 1.95179e+00 6.68690e-01 397 2006 3 4.12383e+00 1.21948e+00 778 2006 4 5.21112e+00 1.91995e+00 442 2006 5 5.09929e+00 1.56071e+00 126 2006 6 5.58959e+00 1.53575e+00 782 2006 7 5.07430e+00 1.51156e+00 246 2006 8 4.70733e+00 1.68448e+00 400 2006 9 3.44150e+00 4.47076e-01 1019 2006 10 4.17272e+00 6.74524e-01 824 2006 11 3.42465e+00 7.83524e-01 770 2006 12 3.82655e+00 4.46847e-01 758 2007 1 4.41001e+00 6.51848e-01 991 2007 2 5.18223e+00 1.29302e+00 752 2007 3 4.83947e+00 9.29406e-01 614 2007 4 3.57886e+00 5.48812e-01 179 2007 5 4.75844e+00 8.00644e-01 61 2007 6 5.20190e+00 1.46979e+00 643 2007 7 5.36523e+00 2.32424e+00 303 2007 8 5.20529e+00 1.44764e+00 654 2007 9 3.61741e+00 1.06451e+00 746 2007 10 3.51037e+00 7.67325e-01 680 2007 11 3.47832e+00 8.02049e-01 788 2007 12 3.47591e+00 4.58573e-01 749 2008 1 3.31593e+00 4.89924e-01 457 2008 2 3.56776e+00 3.30749e-01 391 2008 3 4.18985e+00 9.72129e-01 459 2008 4 6.25807e+00 1.08631e+00 248 2008 5 6.85145e+00 1.02197e+00 64 2008 6 4.95573e+00 2.62757e+00 104 2008 7 3.90021e+00 1.20886e+00 223 2008 8 4.01143e+00 1.49174e+00 151 2008 9 3.41666e+00 8.23619e-01 158 2008 10 3.07233e+00 7.16514e-01 524 2008 11 4.08930e+00 7.40691e-01 561 2008 12 4.40508e+00 1.12779e+00 905 2009 1 4.08889e+00 7.40782e-01 715 2009 2 4.89438e+00 7.83978e-01 225 2009 3 4.54675e+00 4.81229e-01 338 2009 4 3.98392e+00 5.71117e-01 79 2009 5 4.49508e+00 1.02019e+00 135 2009 6 6.25317e+00 1.79391e+00 365 2009 7 5.92645e+00 7.50623e-01 213 2009 8 4.59974e+00 8.52911e-01 248 2009 9 3.78162e+00 1.24831e+00 414 2009 10 2.99073e+00 4.54198e-01 259 2009 11 4.21929e+00 8.27763e-01 301 2009 12 4.53169e+00 1.04468e+00 633 2010 1 4.20275e+00 7.32006e-01 850 2010 2 4.62485e+00 7.82753e-01 453 2010 3 5.73990e+00 1.24140e+00 378 2010 4 5.28505e+00 4.67349e-01 190 2010 5 4.77788e+00 9.56279e-01 256 2010 6 5.17185e+00 1.86327e+00 251 2010 7 7.60012e+00 1.28274e+00 448 2010 8 5.80096e+00 1.10316e+00 122 2010 9 2.98177e+00 1.37510e+00 470 2010 10 3.10094e+00 8.53691e-01 889 2010 11 3.29649e+00 7.81506e-01 1128 2010 12 3.86303e+00 6.36787e-01 780 2011 1 4.38413e+00 5.29937e-01 608 2011 2 4.41951e+00 6.38612e-01 564 2011 3 4.84002e+00 7.50240e-01 536 2011 4 4.53973e+00 8.38878e-01 87 2011 5 5.10087e+00 6.29153e-01 128 2011 6 5.06491e+00 1.06046e+00 379 2011 7 4.98017e+00 1.47841e+00 192 2011 8 7.43900e+00 2.38056e+00 673 2011 9 5.35896e+00 1.80544e+00 678 2011 10 3.96454e+00 8.29378e-01 576 2011 11 3.64411e+00 4.30149e-01 459 2011 12 4.33205e+00 6.60376e-01 1016 2012 1 4.84420e+00 6.87534e-01 685 2012 2 3.92662e+00 4.32457e-01 553 2012 3 3.97347e+00 5.23783e-01 318 2012 4 6.38377e+00 8.84951e-01 192 2012 5 nan nan 0 2012 6 6.92530e+00 1.85994e+00 422 2012 7 7.02706e+00 1.21833e+00 128 2012 8 6.49755e+00 2.20257e+00 667 2012 9 3.95783e+00 8.52527e-01 744 2012 10 3.87070e+00 1.30766e+00 606 2012 11 3.93841e+00 7.77409e-01 583 2012 12 4.50043e+00 1.02925e+00 453 2013 1 4.94838e+00 8.56451e-01 551 2013 2 4.99878e+00 1.16690e+00 737 2013 3 4.97899e+00 9.87162e-01 547 2013 4 4.51414e+00 9.80176e-01 165 2013 5 7.03165e+00 1.61243e+00 256 2013 6 7.07432e+00 2.35619e+00 320 2013 7 6.90187e+00 1.52167e+00 433 2013 8 6.40900e+00 1.50965e+00 896 2013 9 4.31201e+00 8.30254e-01 852 2013 10 4.48698e+00 7.85080e-01 967 2013 11 4.78241e+00 1.02642e+00 554 2013 12 4.04534e+00 8.05064e-01 808 2014 1 4.93548e+00 6.90430e-01 790 2014 2 4.86656e+00 7.97328e-01 704 2014 3 5.22752e+00 1.05906e+00 691 2014 4 4.81020e+00 1.02597e+00 256 2014 5 6.74713e+00 1.81525e+00 464 2014 6 6.60460e+00 1.31167e+00 448 2014 7 5.22199e+00 1.09424e+00 586 2014 8 5.70886e+00 1.48444e+00 499 2014 9 4.49786e+00 8.36608e-01 921 2014 10 3.39680e+00 6.39763e-01 878 2014 11 3.83925e+00 7.73678e-01 882 2014 12 4.20047e+00 5.75395e-01 1212 2015 1 4.45940e+00 7.81951e-01 738 2015 2 5.29261e+00 1.01776e+00 576 2015 3 4.98884e+00 8.11353e-01 558 2015 4 5.63504e+00 9.46790e-01 241 2015 5 5.43930e+00 1.84992e+00 82 2015 6 6.08613e+00 1.31806e+00 609 2015 7 4.96367e+00 1.50510e+00 287 2015 8 5.56200e+00 1.63499e+00 334 2015 9 3.23601e+00 4.67883e-01 209 2015 10 3.60691e+00 6.58961e-01 192 2015 11 3.59853e+00 8.39846e-01 629 2015 12 3.93183e+00 7.31257e-01 749 2016 1 4.84150e+00 6.04580e-01 828 2016 2 5.10676e+00 4.44240e-01 1132 2016 3 3.83829e+00 8.49044e-01 460 2016 4 5.34699e+00 9.40032e-01 562 2016 5 7.31459e+00 1.52916e+00 401 2016 6 8.42504e+00 2.09578e+00 417 2016 7 5.87295e+00 2.00312e+00 725 2016 8 6.31507e+00 1.82552e+00 590 2016 9 2.91185e+00 8.10679e-01 769 2016 10 3.65295e+00 7.82224e-01 670 2016 11 3.99045e+00 8.27076e-01 627 2016 12 3.94104e+00 7.96644e-01 411 2017 1 4.55230e+00 5.74253e-01 752 2017 2 4.46572e+00 6.48762e-01 615 2017 3 4.84732e+00 8.89595e-01 369 2017 4 6.97887e+00 2.09012e+00 259 2017 5 6.34372e+00 5.34140e-01 128 2017 6 5.66499e+00 1.08692e+00 774 2017 7 4.07950e+00 1.97570e+00 347 2017 8 5.02875e+00 2.01562e+00 482 2017 9 1.52173e+00 8.31084e-01 405 2017 10 2.90621e+00 1.12836e+00 431 2017 11 3.65448e+00 4.95987e-01 653 2017 12 3.73162e+00 7.98731e-01 849 2018 1 4.48095e+00 1.07419e+00 896 2018 2 4.42503e+00 4.56271e-01 679 2018 3 3.82969e+00 9.10511e-01 641 2018 4 3.93826e+00 5.59959e-01 265 2018 5 4.50358e+00 1.33133e+00 285 2018 6 7.39578e+00 2.48552e-01 64 2018 7 5.62999e+00 1.59976e+00 437 2018 8 6.14868e+00 1.32662e+00 704 2018 9 5.14135e+00 1.25972e+00 546 2018 10 3.82505e+00 1.24661e+00 381 2018 11 3.48031e+00 4.93259e-01 405 2018 12 3.95519e+00 4.73411e-01 528 2019 1 3.78778e+00 2.44907e-01 264 2019 2 4.34749e+00 5.61249e-01 609 2019 3 4.89881e+00 8.41743e-01 875 2019 4 4.63139e+00 1.22165e+00 491 2019 5 4.97693e+00 9.43451e-01 590 2019 6 6.18794e+00 1.62955e+00 764 2019 7 6.34934e+00 1.11493e+00 502 2019 8 6.06939e+00 1.62089e+00 911 2019 9 4.65352e+00 1.06914e+00 1172 2019 10 3.48963e+00 5.65724e-01 748 2019 11 3.42608e+00 5.76087e-01 640 2019 12 3.38288e+00 3.49148e-01 659 2020 1 3.57228e+00 5.35508e-01 819 2020 2 3.78506e+00 7.09387e-01 683 2020 3 4.12150e+00 8.92678e-01 797 2020 4 4.20376e+00 8.90063e-01 356 2020 5 5.42033e+00 1.97959e+00 254 2020 6 7.06083e+00 1.75602e+00 779 2020 7 6.87141e+00 1.57799e+00 683 2020 8 7.46373e+00 1.04103e+00 476 2020 9 3.53571e+00 1.04243e+00 957 2020 10 3.61313e+00 9.36986e-01 1345 2020 11 3.63555e+00 6.62528e-01 704 2020 12 3.07762e+00 4.74314e-01 466 2021 1 3.62297e+00 4.39534e-01 719 2021 2 3.79820e+00 5.37806e-01 785 2021 3 3.76518e+00 6.41580e-01 573 2021 4 5.01525e+00 8.03607e-01 113 2021 5 6.70725e+00 1.80551e+00 396 2021 6 5.87930e+00 1.93024e+00 509 2021 7 7.82841e+00 1.38415e+00 862 2021 8 5.40108e+00 1.47187e+00 599 2021 9 3.66350e+00 1.02675e+00 1085 2021 10 3.48169e+00 8.63060e-01 1270 2021 11 3.63587e+00 5.55041e-01 669 2021 12 3.56282e+00 4.12553e-01 507 2022 1 4.32363e+00 7.12975e-01 592 2022 2 4.62520e+00 5.49762e-01 866 2022 3 3.90543e+00 5.43982e-01 512 2022 4 2.98919e+00 1.55417e-01 61 2022 5 6.11881e+00 7.36829e-01 181 2022 6 5.91564e+00 1.34895e+00 486 2022 7 8.48150e+00 2.04473e+00 122 2022 8 6.39809e+00 1.62663e+00 327 2022 9 4.01034e+00 9.34115e-01 592 2022 10 3.90240e+00 7.46952e-01 1054 2022 11 4.14059e+00 7.05189e-01 314 2022 12 4.77352e+00 7.40116e-01 682 2023 1 5.44688e+00 6.84654e-01 592 2023 2 4.54389e+00 7.48180e-01 512 2023 3 5.74720e+00 5.82423e-01 834 2023 4 6.93677e+00 9.34705e-01 899 2023 5 7.02210e+00 8.02700e-01 330 2023 6 7.68985e+00 1.09055e+00 691 2023 7 7.38083e+00 1.24055e+00 960 2023 8 6.17066e+00 1.23668e+00 611 2023 9 3.16568e+00 9.33980e-01 885 2023 10 3.52729e+00 1.05555e+00 742 2023 11 3.57202e+00 5.99357e-01 718 2023 12 4.03540e+00 6.14026e-01 742 2024 1 4.24990e+00 6.35621e-01 1093 2024 2 4.75730e+00 5.73547e-01 1024 2024 3 4.57451e+00 7.17840e-01 763 2024 4 6.42501e+00 1.04956e+00 162