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 1.54745e+01 6.43628e+00 675 2002 8 1.03952e+01 4.31250e+00 539 2002 9 6.31685e+00 4.53661e+00 574 2002 10 2.21630e+00 3.08412e+00 681 2002 11 3.00475e-01 2.52792e-01 919 2002 12 1.47324e+00 7.99903e-01 496 2003 1 1.54956e+00 1.31864e+00 697 2003 2 6.93633e-01 4.09767e-01 352 2003 3 1.53901e+00 7.70567e-01 538 2003 4 6.11450e+00 4.94764e+00 361 2003 5 1.05536e+01 6.46392e+00 186 2003 6 8.38860e+00 6.93739e+00 493 2003 7 9.13186e+00 7.20806e+00 284 2003 8 5.36160e+00 6.33807e+00 364 2003 9 1.96444e+00 2.23822e+00 771 2003 10 8.61976e-01 1.22847e+00 595 2003 11 5.14996e-01 4.98628e-01 745 2003 12 2.41554e-01 2.08958e-01 355 2004 1 1.29379e-01 1.48742e-01 470 2004 2 2.29099e-01 2.33763e-01 616 2004 3 2.17952e+00 2.43870e+00 941 2004 4 4.01683e+00 2.46079e+00 225 2004 5 1.05447e+01 4.48073e+00 436 2004 6 1.40448e+01 6.35576e+00 516 2004 7 1.43340e+01 1.02721e+01 377 2004 8 5.33217e+00 4.91102e+00 506 2004 9 3.11489e+00 3.54056e+00 598 2004 10 3.57945e+00 4.11130e+00 723 2004 11 3.15485e-01 3.29080e-01 343 2004 12 3.75336e-01 3.82749e-01 429 2005 1 4.54362e-01 6.53379e-01 674 2005 2 6.18599e-01 5.30055e-01 622 2005 3 5.01693e+00 2.49092e+00 611 2005 4 6.02643e+00 6.50673e+00 351 2005 5 1.37194e+01 4.55624e+00 264 2005 6 9.24522e+00 7.11285e+00 758 2005 7 1.48406e+01 4.46522e+00 128 2005 8 6.09971e+00 6.46462e+00 401 2005 9 1.96197e+00 2.58635e+00 806 2005 10 1.39328e+00 1.38354e+00 853 2005 11 5.76860e-01 7.61145e-01 550 2005 12 3.96286e-01 3.30913e-01 688 2006 1 2.11287e-01 2.58310e-01 531 2006 2 7.48943e-01 5.87614e-01 280 2006 3 1.64644e+00 1.29963e+00 742 2006 4 1.18954e+01 6.73378e+00 553 2006 5 9.61946e+00 4.01477e+00 304 2006 6 1.81580e+01 8.97293e+00 674 2006 7 1.14187e+01 5.17589e+00 191 2006 8 1.20901e+00 2.11813e+00 60 2006 9 2.42845e+00 2.42317e+00 774 2006 10 1.30535e+00 2.01091e+00 904 2006 11 4.77742e-01 4.87214e-01 671 2006 12 3.55196e-01 3.47326e-01 360 2007 1 5.69553e-01 3.24474e-01 672 2007 2 8.87399e-01 8.75350e-01 750 2007 3 2.12406e+00 2.05642e+00 631 2007 4 2.27210e+00 1.53088e+00 97 2007 5 8.27694e+00 2.04894e+00 160 2007 6 1.11777e+01 6.97839e+00 361 2007 7 2.74451e+01 1.46490e+01 55 2007 8 4.95140e+00 4.16583e+00 502 2007 9 1.91212e+00 3.36998e+00 769 2007 10 7.29518e-01 1.24397e+00 576 2007 11 6.75494e-01 8.40184e-01 1011 2007 12 5.17175e-01 5.07751e-01 513 2008 1 5.82149e-01 4.07605e-01 354 2008 2 7.25748e-01 4.41701e-01 667 2008 3 3.66283e+00 2.74206e+00 678 2008 4 4.19113e+00 3.49300e+00 238 2008 5 2.62682e+00 1.15407e+00 215 2008 6 3.68114e-02 3.02842e-02 8 2008 7 8.87527e+00 7.44824e+00 108 2008 8 4.46004e+00 4.88236e+00 102 2008 9 8.21329e-01 9.84561e-01 444 2008 10 2.47047e-01 3.27177e-01 557 2008 11 2.30764e-01 3.20545e-01 761 2008 12 4.62085e-01 4.46764e-01 988 2009 1 7.03480e-01 7.05724e-01 810 2009 2 1.24694e+00 1.27354e+00 241 2009 3 3.58973e-01 3.74926e-01 221 2009 4 9.65104e+00 2.60062e+00 256 2009 5 8.96262e+00 3.83645e+00 314 2009 6 1.23678e+01 4.24937e+00 88 2009 7 nan nan 0 2009 8 1.11106e+01 8.32319e+00 191 2009 9 4.55980e+00 4.58392e+00 436 2009 10 3.32063e-01 3.87892e-01 395 2009 11 2.44416e-01 2.96797e-01 674 2009 12 3.53878e-01 3.10290e-01 528 2010 1 6.89123e-01 5.57284e-01 563 2010 2 1.51858e+00 8.07306e-01 517 2010 3 4.21128e+00 5.19966e+00 522 2010 4 1.20938e+01 2.90632e+00 136 2010 5 1.23441e+01 4.90580e+00 296 2010 6 1.19693e+01 7.95338e+00 143 2010 7 1.87062e+01 1.14856e+01 348 2010 8 1.37752e+01 6.43961e+00 255 2010 9 1.85259e+00 2.65399e+00 298 2010 10 1.82638e+00 2.04872e+00 785 2010 11 6.21017e-01 5.58082e-01 1262 2010 12 6.02349e-01 5.70659e-01 818 2011 1 2.99609e-01 3.91599e-01 658 2011 2 6.92350e-01 3.47011e-01 345 2011 3 3.10332e+00 2.40780e+00 600 2011 4 8.94661e+00 5.11527e+00 243 2011 5 8.61946e+00 3.77830e+00 402 2011 6 1.14178e+01 3.42261e+00 266 2011 7 1.31656e+01 4.98532e+00 311 2011 8 1.39161e+01 2.96524e+00 294 2011 9 4.69402e+00 4.54551e+00 675 2011 10 1.10303e+00 1.34883e+00 853 2011 11 2.63397e-01 2.76765e-01 482 2011 12 9.84537e-01 6.88863e-01 1033 2012 1 2.15935e+00 1.52128e+00 738 2012 2 1.66773e+00 1.15898e+00 577 2012 3 2.98580e+00 2.09533e+00 502 2012 4 4.29575e+00 2.54390e+00 208 2012 5 2.48476e+01 8.16998e+00 57 2012 6 8.83291e+00 5.62995e+00 247 2012 7 1.10242e+01 6.52628e+00 497 2012 8 1.58142e+01 6.87480e+00 338 2012 9 5.10468e+00 3.96562e+00 601 2012 10 4.82163e+00 3.92645e+00 505 2012 11 1.20614e+00 1.08852e+00 621 2012 12 1.23705e+00 6.07937e-01 352 2013 1 1.04564e+00 1.03852e+00 608 2013 2 7.09321e-01 4.95555e-01 610 2013 3 2.58420e+00 1.49414e+00 370 2013 4 9.62282e+00 6.42128e+00 240 2013 5 1.00698e+01 5.54922e+00 288 2013 6 1.79058e+01 5.99326e+00 402 2013 7 1.74316e+01 7.62523e+00 407 2013 8 1.34771e+01 7.08239e+00 569 2013 9 5.70050e+00 4.89030e+00 684 2013 10 1.73966e+00 2.83225e+00 903 2013 11 4.92629e-01 4.33700e-01 577 2013 12 1.60518e+00 1.43841e+00 982 2014 1 9.80018e-01 1.06680e+00 709 2014 2 1.52992e+00 5.77904e-01 639 2014 3 4.10032e+00 3.43823e+00 680 2014 4 4.87903e+00 3.72962e+00 383 2014 5 8.35060e+00 3.12326e+00 250 2014 6 1.01729e+01 5.93605e+00 750 2014 7 6.59347e+00 4.67338e+00 476 2014 8 2.00664e+01 3.82790e+00 305 2014 9 6.70622e+00 5.97026e+00 1029 2014 10 1.19263e+00 1.75333e+00 979 2014 11 6.97541e-01 5.24276e-01 733 2014 12 8.04420e-01 4.98536e-01 991 2015 1 8.57423e-01 6.34235e-01 755 2015 2 9.87768e-01 5.20740e-01 446 2015 3 1.45276e+00 8.61490e-01 643 2015 4 5.32954e+00 2.91473e+00 241 2015 5 2.23326e+00 1.43655e+00 144 2015 6 1.00445e+01 8.29172e+00 411 2015 7 1.35511e+01 3.08039e+00 189 2015 8 1.57756e+01 6.69876e+00 635 2015 9 2.91890e+00 2.94581e+00 628 2015 10 1.59178e+00 1.60203e+00 541 2015 11 9.56881e-01 7.89921e-01 895 2015 12 8.64616e-01 5.28928e-01 739 2016 1 1.02067e+00 7.21073e-01 935 2016 2 2.28152e+00 2.05377e+00 1044 2016 3 7.84244e+00 3.18382e+00 464 2016 4 1.28501e+01 5.09740e+00 648 2016 5 6.84457e+00 4.52361e+00 466 2016 6 1.19487e+01 7.39753e+00 451 2016 7 1.35398e+01 7.58003e+00 348 2016 8 1.06651e+01 6.36922e+00 714 2016 9 3.77636e+00 3.84296e+00 769 2016 10 1.39455e+00 1.33779e+00 979 2016 11 4.28613e-01 4.02695e-01 660 2016 12 6.13963e-01 9.33345e-01 614 2017 1 7.44309e-01 7.78920e-01 556 2017 2 1.53877e+00 1.33283e+00 382 2017 3 3.99321e+00 2.52213e+00 639 2017 4 7.56056e+00 3.46844e+00 207 2017 5 1.26083e+01 6.24884e+00 241 2017 6 1.87904e+01 5.55376e+00 723 2017 7 1.33286e+01 5.33373e+00 411 2017 8 1.01149e+01 4.87378e+00 473 2017 9 2.63687e+00 2.86479e+00 593 2017 10 1.90942e+00 2.83357e+00 780 2017 11 8.45349e-01 7.77875e-01 762 2017 12 1.32913e+00 9.54657e-01 899 2018 1 1.19515e+00 9.16927e-01 753 2018 2 1.89825e+00 1.39371e+00 370 2018 3 4.13166e+00 3.30012e+00 767 2018 4 5.23201e+00 2.49121e+00 219 2018 5 1.31548e+01 6.42546e+00 325 2018 6 1.20190e+01 6.81127e+00 412 2018 7 1.72131e+01 6.50818e+00 304 2018 8 1.21510e+01 5.45317e+00 675 2018 9 4.29094e+00 3.53137e+00 624 2018 10 2.80292e+00 2.45466e+00 283 2018 11 7.44530e-01 7.55160e-01 363 2018 12 9.51859e-01 6.02217e-01 875 2019 1 1.03091e+00 4.00104e-01 377 2019 2 9.86885e-01 3.68979e-01 653 2019 3 2.57893e+00 1.20225e+00 727 2019 4 6.17564e+00 3.28287e+00 440 2019 5 8.05853e+00 3.70285e+00 594 2019 6 1.39885e+01 6.40084e+00 827 2019 7 8.96394e+00 3.80304e+00 631 2019 8 7.75328e+00 3.64291e+00 629 2019 9 2.74535e+00 2.45529e+00 991 2019 10 1.84159e+00 1.86415e+00 622 2019 11 6.36292e-01 6.24302e-01 628 2019 12 9.59359e-01 4.97017e-01 515 2020 1 7.78523e-01 4.06512e-01 496 2020 2 6.95593e-01 6.84990e-01 766 2020 3 2.23833e+00 1.50530e+00 626 2020 4 5.79593e+00 3.49354e+00 283 2020 5 8.47994e+00 6.41364e+00 543 2020 6 1.49857e+01 5.30537e+00 730 2020 7 1.24957e+01 1.09970e+01 578 2020 8 3.14932e+00 2.07334e+00 262 2020 9 6.75563e+00 4.24385e+00 845 2020 10 1.25128e+00 1.27114e+00 1350 2020 11 7.01414e-01 4.12784e-01 664 2020 12 5.33252e-01 4.91623e-01 657 2021 1 6.16107e-01 3.63445e-01 1007 2021 2 1.08876e+00 8.66022e-01 919 2021 3 2.29791e+00 1.56041e+00 412 2021 4 1.04581e+01 4.32081e+00 341 2021 5 1.16332e+01 7.97407e+00 645 2021 6 7.44131e+00 4.19059e+00 603 2021 7 1.28815e+01 5.73533e+00 536 2021 8 6.34272e+00 3.50985e+00 640 2021 9 3.77993e+00 2.80231e+00 931 2021 10 2.85488e+00 3.15061e+00 1136 2021 11 5.78828e-01 5.90374e-01 783 2021 12 6.42858e-01 4.33275e-01 412 2022 1 1.19907e+00 9.28658e-01 744 2022 2 2.06503e+00 1.48356e+00 889 2022 3 2.08944e+00 1.24760e+00 341 2022 4 9.88038e+00 2.09269e+00 65 2022 5 1.00169e+01 8.80497e+00 324 2022 6 2.02518e+01 4.63362e+00 447 2022 7 1.90369e+01 1.00338e+01 260 2022 8 6.54578e+00 4.47367e+00 381 2022 9 3.13205e+00 2.81524e+00 893 2022 10 2.38308e+00 1.98651e+00 943 2022 11 1.72485e+00 1.11395e+00 566 2022 12 1.26646e+00 1.01895e+00 697 2023 1 5.63455e-01 5.36800e-01 412 2023 2 1.63668e+00 2.41660e+00 610 2023 3 7.67302e+00 3.70355e+00 1024 2023 4 9.81923e+00 5.30623e+00 676 2023 5 7.84000e+00 3.44024e+00 321 2023 6 1.40656e+01 5.28022e+00 832 2023 7 9.74408e+00 4.54903e+00 748 2023 8 6.17144e+00 2.30278e+00 241 2023 9 5.16436e+00 2.54880e+00 844 2023 10 2.27179e+00 2.36682e+00 900 2023 11 9.00230e-01 8.19698e-01 596 2023 12 5.90190e-01 4.38213e-01 612 2024 1 1.51266e+00 9.06694e-01 757 2024 2 7.27780e-01 7.76095e-01 1122 2024 3 2.57232e+00 2.29096e+00 798 2024 4 1.31087e+01 4.05875e+00 197