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 1.92404e+01 6.03176e+00 782 2002 8 1.10286e+01 4.43402e+00 696 2002 9 9.02224e+00 4.11814e+00 722 2002 10 3.40451e+00 2.75135e+00 516 2002 11 8.53094e-01 5.06326e-01 843 2002 12 9.08580e-01 3.41246e-01 328 2003 1 1.32367e+00 8.58150e-01 724 2003 2 1.65815e+00 4.66266e-01 320 2003 3 3.35663e+00 1.27707e+00 512 2003 4 9.78587e+00 4.58740e+00 339 2003 5 5.31443e+00 3.26358e+00 224 2003 6 9.11119e+00 4.29622e+00 645 2003 7 1.62713e+01 3.13474e+00 356 2003 8 1.49924e+01 3.42432e+00 661 2003 9 5.22043e+00 4.01974e+00 962 2003 10 1.80095e+00 2.06592e+00 622 2003 11 1.00331e+00 6.22281e-01 832 2003 12 8.67866e-01 5.00623e-01 436 2004 1 6.86495e-01 5.15556e-01 480 2004 2 4.36997e-01 3.94661e-01 601 2004 3 5.19520e+00 2.03906e+00 695 2004 4 1.18464e+01 4.48258e+00 256 2004 5 1.38840e+01 5.55504e+00 320 2004 6 1.23511e+01 4.85144e+00 633 2004 7 1.41092e+01 6.66262e+00 578 2004 8 1.32365e+01 4.37779e+00 872 2004 9 5.38906e+00 5.32862e+00 531 2004 10 5.77027e+00 3.89859e+00 507 2004 11 9.36283e-02 1.28691e-01 423 2004 12 1.13900e+00 6.90495e-01 468 2005 1 7.01017e-01 6.38628e-01 651 2005 2 1.46361e+00 1.08187e+00 476 2005 3 1.07156e+01 4.92906e+00 611 2005 4 1.38433e+01 3.01023e+00 249 2005 5 1.24153e+01 2.21785e+00 198 2005 6 6.85901e+00 5.05832e+00 749 2005 7 2.16227e+01 8.25108e+00 192 2005 8 1.61918e+01 6.33833e+00 464 2005 9 7.54591e+00 4.12510e+00 722 2005 10 2.72889e+00 2.42929e+00 653 2005 11 8.87192e-01 4.38662e-01 514 2005 12 6.23625e-01 4.20422e-01 937 2006 1 7.51858e-01 6.67514e-01 456 2006 2 9.61801e-01 8.30851e-01 373 2006 3 4.64031e+00 2.78489e+00 813 2006 4 1.57726e+01 2.79803e+00 324 2006 5 2.83795e+00 2.11990e+00 437 2006 6 1.75894e+01 6.83584e+00 660 2006 7 1.08116e+01 5.10529e+00 410 2006 8 1.03323e+01 1.63963e+00 87 2006 9 1.02222e+01 4.30994e+00 959 2006 10 4.98730e+00 4.18929e+00 683 2006 11 3.17317e-01 3.00622e-01 636 2006 12 1.05475e+00 3.54755e-01 458 2007 1 7.32731e-01 3.33410e-01 700 2007 2 1.64875e+00 9.36131e-01 801 2007 3 3.33255e+00 1.30646e+00 618 2007 4 5.19723e+00 3.35946e+00 128 2007 5 2.73243e+00 2.15817e+00 179 2007 6 6.51274e+00 6.07224e+00 576 2007 7 7.05258e+00 3.30609e+00 94 2007 8 1.69743e+01 7.84592e+00 378 2007 9 5.51688e+00 5.11185e+00 905 2007 10 3.34755e+00 2.79308e+00 591 2007 11 3.37460e-01 3.80570e-01 921 2007 12 6.73465e-01 6.56724e-01 536 2008 1 1.97716e+00 1.01112e+00 128 2008 2 1.95303e+00 1.15096e+00 518 2008 3 5.63664e+00 3.33428e+00 687 2008 4 4.10120e+00 1.89460e+00 22 2008 5 1.39962e+00 3.21016e+00 108 2008 6 1.67050e+01 7.81856e+00 124 2008 7 6.83595e+00 6.17573e+00 137 2008 8 8.48149e+00 2.03024e+00 82 2008 9 6.35906e+00 6.41926e+00 373 2008 10 7.53386e-01 1.04136e+00 450 2008 11 2.62753e-01 2.33031e-01 690 2008 12 8.13524e-01 5.82211e-01 904 2009 1 9.60448e-01 6.44721e-01 799 2009 2 1.47064e+00 1.14717e+00 384 2009 3 3.17184e+00 1.04296e+00 256 2009 4 9.83151e+00 5.56557e-01 14 2009 5 8.92947e+00 6.48904e+00 333 2009 6 1.53949e+01 7.96317e+00 267 2009 7 1.20610e+01 7.15802e+00 128 2009 8 1.44846e+01 1.53927e+00 232 2009 9 9.35035e+00 3.80374e+00 458 2009 10 1.01726e+00 1.34586e+00 363 2009 11 2.88048e+00 3.35420e+00 366 2009 12 9.40613e-01 5.14570e-01 494 2010 1 1.38613e+00 6.19332e-01 563 2010 2 3.03700e+00 1.15018e+00 512 2010 3 1.15146e+01 3.02743e+00 372 2010 4 9.13072e+00 2.19762e+00 199 2010 5 5.10470e+00 1.40566e+00 320 2010 6 1.31036e+01 5.28856e+00 128 2010 7 1.63241e+01 3.50513e+00 644 2010 8 2.22327e+01 2.52987e+00 140 2010 9 8.23012e+00 4.32065e+00 449 2010 10 9.74985e-01 1.30137e+00 772 2010 11 5.16294e-01 6.30222e-01 1174 2010 12 4.80930e-01 6.08597e-01 854 2011 1 7.12470e-01 4.56612e-01 448 2011 2 1.22329e+00 6.74475e-01 367 2011 3 3.76928e+00 2.13153e+00 660 2011 4 3.75531e+00 8.55360e-01 127 2011 5 1.62644e+01 5.13911e+00 320 2011 6 1.63294e+01 3.15863e+00 276 2011 7 2.02305e+01 4.86091e+00 266 2011 8 1.84458e+01 2.69091e+00 528 2011 9 1.14003e+01 3.50352e+00 650 2011 10 2.52625e+00 2.28047e+00 861 2011 11 6.73491e-01 3.35378e-01 626 2011 12 8.87672e-01 5.29298e-01 1088 2012 1 1.98298e+00 6.08618e-01 769 2012 2 2.36635e+00 1.38981e+00 640 2012 3 3.08121e+00 8.95428e-01 484 2012 4 1.34437e+01 6.92534e+00 193 2012 5 nan nan 0 2012 6 1.97144e+01 3.86244e+00 322 2012 7 1.50524e+01 7.38410e+00 315 2012 8 1.90501e+01 3.47672e+00 258 2012 9 1.16411e+01 3.05400e+00 537 2012 10 8.15297e+00 3.51617e+00 402 2012 11 2.43669e+00 1.81596e+00 517 2012 12 1.29330e+00 4.20155e-01 359 2013 1 7.45323e-01 6.09491e-01 534 2013 2 6.71007e-01 5.52408e-01 698 2013 3 5.48626e+00 4.19235e+00 515 2013 4 1.42022e+01 4.39962e+00 256 2013 5 1.68314e+01 2.53543e+00 384 2013 6 2.21751e+01 5.35240e+00 453 2013 7 1.96771e+01 5.64898e+00 472 2013 8 1.72325e+01 4.79194e+00 594 2013 9 1.07957e+01 5.85781e+00 761 2013 10 1.86382e+00 1.97812e+00 972 2013 11 9.83218e-01 3.67105e-01 541 2013 12 1.09872e+00 4.82512e-01 863 2014 1 2.91376e+00 1.62471e+00 545 2014 2 4.31696e+00 2.81369e+00 644 2014 3 1.37478e+01 3.07546e+00 629 2014 4 7.87495e+00 6.47712e+00 333 2014 5 1.11960e+01 6.01981e+00 353 2014 6 1.15781e+01 3.35623e+00 834 2014 7 9.09541e+00 5.64611e+00 837 2014 8 1.44917e+01 4.34391e+00 451 2014 9 1.23565e+01 5.36319e+00 1203 2014 10 3.77459e+00 3.30175e+00 941 2014 11 7.08725e-01 4.16550e-01 733 2014 12 1.93985e+00 9.45045e-01 963 2015 1 1.58948e+00 7.18040e-01 735 2015 2 4.24565e+00 1.71224e+00 478 2015 3 7.57542e+00 2.47619e+00 566 2015 4 1.17173e+01 3.30380e+00 195 2015 5 1.33104e+01 8.63404e+00 150 2015 6 1.24603e+01 8.35011e+00 641 2015 7 9.82507e+00 6.26696e+00 314 2015 8 1.92479e+01 3.30331e+00 597 2015 9 5.08361e+00 4.89365e+00 604 2015 10 9.17648e-01 1.01152e+00 445 2015 11 8.17863e-01 5.02735e-01 621 2015 12 7.10072e-01 2.65354e-01 640 2016 1 9.77326e-01 2.97978e-01 759 2016 2 4.01565e+00 1.65903e+00 1091 2016 3 5.89027e+00 2.32167e+00 446 2016 4 9.84222e+00 4.93136e+00 554 2016 5 9.89119e+00 5.79777e+00 545 2016 6 1.86928e+01 8.91809e+00 393 2016 7 1.34799e+01 5.94393e+00 448 2016 8 1.98218e+01 3.55781e+00 481 2016 9 6.94014e+00 4.37960e+00 644 2016 10 1.10847e+00 1.21977e+00 568 2016 11 2.08171e-01 2.10336e-01 565 2016 12 7.76958e-01 3.79093e-01 640 2017 1 1.50929e+00 1.08365e+00 608 2017 2 3.01747e+00 1.87510e+00 447 2017 3 7.57028e+00 3.42322e+00 427 2017 4 1.20338e+01 1.46453e+00 192 2017 5 1.75295e+01 3.76931e+00 165 2017 6 1.99421e+01 3.28319e+00 946 2017 7 1.49082e+01 5.39917e+00 508 2017 8 1.74278e+01 8.99338e+00 517 2017 9 5.01370e+00 3.50917e+00 521 2017 10 1.19697e+00 1.78219e+00 510 2017 11 8.27668e-01 6.63009e-01 704 2017 12 9.26690e-01 4.76788e-01 853 2018 1 1.56645e+00 8.59093e-01 727 2018 2 1.55726e+00 6.38983e-01 325 2018 3 4.24516e+00 1.98842e+00 716 2018 4 2.99218e+00 1.96957e+00 270 2018 5 1.49344e+01 3.70517e+00 320 2018 6 7.97471e+00 4.63018e+00 607 2018 7 1.42867e+01 6.44980e+00 500 2018 8 1.05581e+01 4.48062e+00 829 2018 9 7.46302e+00 3.59626e+00 689 2018 10 6.49006e+00 6.44326e+00 200 2018 11 9.24706e-01 7.73793e-01 347 2018 12 6.58158e-01 6.22905e-01 655 2019 1 7.27426e-01 2.79540e-01 384 2019 2 9.82109e-01 5.96913e-01 642 2019 3 2.41744e+00 1.20278e+00 832 2019 4 4.76039e+00 2.94605e+00 563 2019 5 4.94343e+00 3.24954e+00 624 2019 6 1.29985e+01 7.84993e+00 733 2019 7 9.75652e+00 4.17451e+00 864 2019 8 9.29431e+00 4.86449e+00 871 2019 9 5.25233e+00 2.86372e+00 1024 2019 10 3.77978e+00 2.07942e+00 595 2019 11 8.62164e-01 2.95930e-01 447 2019 12 5.22799e-01 2.99036e-01 435 2020 1 1.29590e+00 6.33904e-01 522 2020 2 9.41968e-01 6.65210e-01 673 2020 3 3.01308e+00 1.59111e+00 534 2020 4 7.70342e+00 7.05731e+00 280 2020 5 1.42432e+01 7.37443e+00 448 2020 6 1.19613e+01 3.84013e+00 917 2020 7 1.28819e+01 5.64409e+00 726 2020 8 8.81908e+00 2.49863e+00 403 2020 9 6.08140e+00 4.12999e+00 968 2020 10 1.21763e+00 1.44395e+00 1404 2020 11 5.27421e-01 4.18037e-01 460 2020 12 3.02797e-01 1.93955e-01 397 2021 1 5.90332e-01 2.84147e-01 815 2021 2 2.01041e+00 6.65919e-01 783 2021 3 4.11414e+00 2.33266e+00 454 2021 4 8.85482e+00 2.70956e+00 310 2021 5 1.49585e+01 5.96028e+00 513 2021 6 1.51563e+01 5.43680e+00 661 2021 7 1.24774e+01 3.97865e+00 878 2021 8 1.37417e+01 3.02982e+00 640 2021 9 2.88579e+00 2.67922e+00 741 2021 10 1.56054e+00 1.79251e+00 969 2021 11 2.82286e-01 2.87222e-01 637 2021 12 5.64028e-01 2.88936e-01 325 2022 1 9.49478e-01 4.96447e-01 640 2022 2 3.15086e+00 1.65103e+00 900 2022 3 5.07011e+00 2.40929e+00 271 2022 4 4.45722e+00 6.37699e-01 62 2022 5 1.21007e+01 5.54314e+00 297 2022 6 2.15923e+01 4.34385e+00 431 2022 7 1.70114e+01 7.24073e+00 384 2022 8 1.34617e+01 3.34402e+00 574 2022 9 6.30993e+00 4.86389e+00 926 2022 10 3.13713e+00 1.77464e+00 744 2022 11 1.02507e+00 5.40445e-01 414 2022 12 1.18589e+00 6.11462e-01 535 2023 1 2.54949e+00 7.50337e-01 208 2023 2 2.46904e+00 1.87550e+00 570 2023 3 8.37645e+00 2.23244e+00 949 2023 4 8.69511e+00 5.12751e+00 866 2023 5 6.38447e+00 1.97504e+00 382 2023 6 1.22339e+01 3.82148e+00 1017 2023 7 1.12672e+01 5.76503e+00 704 2023 8 9.66866e+00 2.28567e+00 442 2023 9 4.68090e+00 2.02143e+00 1024 2023 10 4.77416e+00 2.66470e+00 825 2023 11 3.15788e-01 2.81475e-01 482 2023 12 1.06984e+00 5.82640e-01 528 2024 1 1.74963e+00 1.11191e+00 849 2024 2 3.76018e+00 1.44565e+00 960 2024 3 5.72214e+00 1.83282e+00 681 2024 4 1.18359e+01 2.04124e+00 128