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 2.36732e+01 6.47398e+00 763 2002 8 1.67596e+01 2.85322e+00 956 2002 9 7.32314e+00 6.07970e+00 892 2002 10 3.48598e+00 3.03360e+00 683 2002 11 1.27972e+00 7.39206e-01 890 2002 12 1.65276e+00 5.63632e-01 307 2003 1 3.08110e+00 2.54688e+00 879 2003 2 2.82819e+00 1.15935e+00 510 2003 3 4.47431e+00 1.98955e+00 512 2003 4 1.62061e+01 7.11820e+00 309 2003 5 1.63630e+01 6.48527e+00 136 2003 6 2.15143e+01 5.07518e+00 552 2003 7 2.54674e+01 5.28372e+00 481 2003 8 2.09666e+01 5.04624e+00 800 2003 9 5.16082e+00 5.27737e+00 1159 2003 10 7.80582e-01 1.07423e+00 676 2003 11 1.42246e+00 7.07268e-01 840 2003 12 1.33394e+00 6.36174e-01 452 2004 1 2.97275e+00 1.69276e+00 484 2004 2 9.64567e-01 7.92287e-01 624 2004 3 5.36827e+00 2.87879e+00 860 2004 4 1.53481e+01 3.76715e+00 323 2004 5 1.12034e+01 5.38196e+00 320 2004 6 1.13418e+01 8.48625e+00 824 2004 7 2.04166e+01 8.20568e+00 514 2004 8 1.67757e+01 6.03794e+00 845 2004 9 6.40884e+00 6.50560e+00 572 2004 10 2.55881e+00 2.41107e+00 670 2004 11 5.02659e-01 4.73147e-01 307 2004 12 9.77463e-01 6.32852e-01 622 2005 1 2.12454e+00 1.85172e+00 665 2005 2 2.26902e+00 1.69172e+00 512 2005 3 1.00552e+01 5.45714e+00 672 2005 4 1.52180e+01 6.06133e+00 472 2005 5 1.72568e+01 2.79047e+00 384 2005 6 1.09903e+01 7.31829e+00 566 2005 7 1.70882e+01 7.68539e+00 163 2005 8 1.71457e+01 9.20976e+00 683 2005 9 5.81707e+00 3.92295e+00 884 2005 10 1.54893e+00 1.80065e+00 815 2005 11 1.37980e+00 9.36307e-01 562 2005 12 1.40194e+00 1.19245e+00 809 2006 1 1.87874e+00 1.35504e+00 440 2006 2 4.25055e+00 2.40642e+00 510 2006 3 6.66752e+00 3.96113e+00 833 2006 4 9.46200e+00 5.16310e+00 364 2006 5 5.59856e+00 4.01052e+00 234 2006 6 1.82636e+01 8.67461e+00 972 2006 7 1.97949e+01 7.68730e+00 268 2006 8 1.27175e+01 4.75710e+00 20 2006 9 8.22074e+00 6.36502e+00 976 2006 10 2.40663e+00 2.59184e+00 793 2006 11 1.18801e+00 6.72291e-01 775 2006 12 1.17365e+00 4.87622e-01 602 2007 1 1.07354e+00 8.66342e-01 720 2007 2 2.20394e+00 1.74935e+00 957 2007 3 4.62569e+00 2.33058e+00 573 2007 4 5.72000e+00 3.18991e+00 138 2007 5 4.69591e+00 3.10152e+00 261 2007 6 9.21135e+00 3.97153e+00 516 2007 7 1.85233e+01 2.29341e+00 196 2007 8 2.29470e+01 4.16819e+00 357 2007 9 8.85951e+00 7.70795e+00 807 2007 10 8.30058e-01 9.29614e-01 736 2007 11 1.01462e+00 8.56132e-01 944 2007 12 1.02979e+00 5.97097e-01 593 2008 1 1.25021e+00 1.52388e+00 339 2008 2 2.68654e+00 1.10587e+00 465 2008 3 8.51328e+00 5.33554e+00 809 2008 4 2.17316e+01 5.65774e+00 107 2008 5 3.49195e+00 7.22188e-01 8 2008 6 2.81464e+00 2.25526e+00 170 2008 7 9.91020e+00 6.55347e+00 189 2008 8 8.54347e+00 5.55014e+00 149 2008 9 4.65620e+00 2.12616e+00 205 2008 10 5.73817e-01 5.79536e-01 481 2008 11 8.39566e-01 5.53890e-01 546 2008 12 9.57905e-01 5.26444e-01 787 2009 1 1.64047e+00 1.38180e+00 765 2009 2 5.95531e+00 1.82890e+00 321 2009 3 7.57630e+00 3.43153e+00 469 2009 4 6.45081e+00 3.24670e+00 96 2009 5 7.77225e+00 5.85618e+00 314 2009 6 1.81874e+01 7.84191e+00 203 2009 7 1.99363e+01 4.98139e+00 170 2009 8 1.73695e+01 4.62668e+00 326 2009 9 9.50945e+00 6.02917e+00 324 2009 10 4.61971e-01 4.51686e-01 277 2009 11 2.93570e+00 2.66863e+00 438 2009 12 1.54183e+00 4.54006e-01 508 2010 1 2.20079e+00 6.04548e-01 744 2010 2 4.63771e+00 2.48855e+00 462 2010 3 1.56334e+01 4.05048e+00 393 2010 4 1.01083e+01 2.85674e+00 256 2010 5 5.84731e+00 2.17135e+00 387 2010 6 2.28301e+01 8.17133e+00 287 2010 7 2.21802e+01 8.29348e+00 573 2010 8 2.56803e+01 3.59188e+00 146 2010 9 1.10329e+01 8.84790e+00 603 2010 10 5.82202e-01 6.80067e-01 795 2010 11 9.70025e-01 5.11621e-01 1207 2010 12 7.35378e-01 7.58810e-01 897 2011 1 1.40577e+00 8.87991e-01 496 2011 2 1.57694e+00 5.62344e-01 425 2011 3 4.09491e+00 2.38781e+00 693 2011 4 2.67449e+00 2.09526e+00 128 2011 5 1.41688e+01 1.09348e+01 258 2011 6 2.00814e+01 4.99341e+00 421 2011 7 2.56240e+01 5.05345e+00 383 2011 8 2.17801e+01 3.93440e+00 814 2011 9 8.70398e+00 5.49280e+00 851 2011 10 8.00096e-01 5.44769e-01 920 2011 11 7.72922e-01 4.58846e-01 574 2011 12 1.02600e+00 7.51191e-01 1026 2012 1 3.40157e+00 1.81900e+00 832 2012 2 3.17306e+00 1.85752e+00 704 2012 3 4.06129e+00 1.94834e+00 473 2012 4 9.54318e+00 1.55856e+00 187 2012 5 nan nan 0 2012 6 2.68179e+01 1.86677e+00 162 2012 7 2.22123e+01 8.68397e+00 187 2012 8 2.07062e+01 4.98745e+00 406 2012 9 9.18433e+00 6.09544e+00 513 2012 10 6.20362e+00 4.63460e+00 791 2012 11 1.68087e+00 1.42134e+00 446 2012 12 2.52632e+00 1.12295e+00 283 2013 1 2.61588e+00 2.01698e+00 644 2013 2 4.97118e+00 3.54917e+00 593 2013 3 9.93485e+00 3.46305e+00 450 2013 4 1.70122e+01 3.62714e+00 220 2013 5 1.97310e+01 2.32120e+00 320 2013 6 2.79581e+01 5.65124e+00 638 2013 7 2.05976e+01 6.89779e+00 648 2013 8 2.00278e+01 4.12488e+00 689 2013 9 1.00723e+01 6.01498e+00 941 2013 10 2.34664e+00 2.77188e+00 1152 2013 11 1.74150e+00 1.47738e+00 623 2013 12 2.09641e+00 1.47628e+00 995 2014 1 4.96982e+00 3.17577e+00 617 2014 2 5.82556e+00 2.26755e+00 774 2014 3 1.30255e+01 3.86490e+00 654 2014 4 5.72830e+00 5.61767e+00 420 2014 5 1.54980e+01 7.48978e+00 448 2014 6 1.70112e+01 5.30107e+00 750 2014 7 2.08585e+01 4.64495e+00 832 2014 8 2.08746e+01 4.72476e+00 470 2014 9 1.44856e+01 5.72495e+00 1138 2014 10 3.25950e+00 3.97960e+00 971 2014 11 1.27049e+00 7.56701e-01 919 2014 12 3.95818e+00 2.52719e+00 960 2015 1 2.56281e+00 1.03836e+00 683 2015 2 7.02163e+00 2.09518e+00 512 2015 3 1.28827e+01 2.18350e+00 621 2015 4 9.79152e+00 7.86802e+00 192 2015 5 7.52359e+00 5.72416e+00 259 2015 6 2.01041e+01 5.40453e+00 679 2015 7 7.71109e+00 2.14669e+00 161 2015 8 2.49721e+01 3.62345e+00 479 2015 9 6.34696e+00 4.29603e+00 461 2015 10 8.02457e-01 6.65757e-01 244 2015 11 1.60256e+00 1.03567e+00 645 2015 12 1.10328e+00 7.03785e-01 721 2016 1 1.26032e+00 4.67361e-01 884 2016 2 3.51863e+00 2.02729e+00 1188 2016 3 7.10624e+00 3.83192e+00 534 2016 4 1.71926e+01 6.68628e+00 700 2016 5 1.18942e+01 5.92989e+00 642 2016 6 1.78678e+01 8.56925e+00 456 2016 7 2.53695e+01 4.79537e+00 431 2016 8 2.49926e+01 4.80335e+00 800 2016 9 6.31104e+00 6.05348e+00 672 2016 10 8.28397e-01 1.10803e+00 935 2016 11 1.02119e+00 7.82507e-01 570 2016 12 1.41152e+00 1.27241e+00 582 2017 1 3.18117e+00 1.09090e+00 671 2017 2 2.76533e+00 1.46342e+00 617 2017 3 7.51546e+00 4.11793e+00 583 2017 4 1.84773e+01 1.87974e+00 217 2017 5 9.53793e+00 7.77804e+00 260 2017 6 2.61740e+01 3.65788e+00 896 2017 7 2.46987e+01 3.92762e+00 375 2017 8 2.22475e+01 3.70749e+00 500 2017 9 5.54687e+00 3.67208e+00 467 2017 10 5.67405e-01 6.70830e-01 759 2017 11 8.15151e-01 3.85693e-01 628 2017 12 7.58022e-01 6.99439e-01 753 2018 1 1.94510e+00 1.40670e+00 669 2018 2 2.16060e+00 9.86098e-01 576 2018 3 3.25091e+00 1.73749e+00 717 2018 4 5.33177e+00 4.34862e+00 283 2018 5 1.06825e+01 6.49245e+00 395 2018 6 8.30627e+00 6.33231e+00 677 2018 7 1.59116e+01 6.58760e+00 674 2018 8 9.51899e+00 7.54854e+00 799 2018 9 8.88629e+00 3.98432e+00 807 2018 10 7.64876e+00 6.22655e+00 240 2018 11 1.93644e+00 8.36286e-01 319 2018 12 1.59194e+00 1.44837e+00 584 2019 1 1.65538e+00 7.68773e-01 384 2019 2 4.28542e+00 1.55296e+00 643 2019 3 4.82475e+00 2.00601e+00 772 2019 4 4.17947e+00 2.19405e+00 632 2019 5 6.70343e+00 5.02394e+00 609 2019 6 2.09819e+01 6.22808e+00 968 2019 7 2.06147e+01 4.08380e+00 815 2019 8 2.07788e+01 4.81616e+00 739 2019 9 9.33321e+00 3.80761e+00 1131 2019 10 3.11633e+00 2.91073e+00 727 2019 11 7.62655e-01 4.44384e-01 650 2019 12 9.98162e-01 7.99155e-01 575 2020 1 2.33471e+00 9.33984e-01 722 2020 2 1.92599e+00 1.45124e+00 670 2020 3 7.64037e+00 2.97197e+00 761 2020 4 1.65995e+01 6.31890e+00 321 2020 5 1.81130e+01 6.58997e+00 378 2020 6 2.04539e+01 8.11128e+00 752 2020 7 2.02880e+01 5.72165e+00 643 2020 8 1.19523e+01 5.29263e+00 495 2020 9 3.62805e+00 3.12813e+00 807 2020 10 2.27170e+00 3.05207e+00 1405 2020 11 6.33377e-01 3.64271e-01 451 2020 12 4.51308e-01 3.03359e-01 472 2021 1 7.70290e-01 5.17693e-01 581 2021 2 2.74027e+00 1.37674e+00 831 2021 3 3.27562e+00 1.98735e+00 493 2021 4 1.16086e+01 1.10802e+00 320 2021 5 1.77911e+01 6.12709e+00 408 2021 6 1.95808e+01 7.39741e+00 691 2021 7 1.87746e+01 4.60639e+00 851 2021 8 1.88212e+01 5.28221e+00 683 2021 9 2.28928e+00 2.32788e+00 980 2021 10 1.38779e+00 1.81651e+00 1333 2021 11 5.49934e-01 3.75517e-01 777 2021 12 5.57813e-01 3.29013e-01 508 2022 1 2.18924e+00 1.42359e+00 619 2022 2 2.78990e+00 1.62171e+00 941 2022 3 3.54393e+00 2.04955e+00 309 2022 4 1.16417e+01 8.35340e-01 64 2022 5 1.22143e+01 6.67354e+00 384 2022 6 2.44029e+01 4.20243e+00 436 2022 7 2.39850e+01 2.51498e+00 315 2022 8 1.88058e+01 4.26592e+00 396 2022 9 6.97329e+00 6.10489e+00 829 2022 10 2.80803e+00 2.05266e+00 732 2022 11 1.12100e+00 6.83557e-01 350 2022 12 2.95824e+00 1.76554e+00 666 2023 1 4.45273e+00 2.70062e+00 321 2023 2 6.50901e+00 3.85015e+00 636 2023 3 1.29629e+01 3.09213e+00 852 2023 4 1.77517e+01 4.65806e+00 801 2023 5 1.31601e+01 2.85322e+00 448 2023 6 1.52125e+01 5.04265e+00 999 2023 7 1.80288e+01 5.18781e+00 808 2023 8 1.28495e+01 2.29651e+00 467 2023 9 5.43750e+00 3.87509e+00 870 2023 10 1.79395e+00 1.31989e+00 879 2023 11 7.58209e-01 6.76459e-01 523 2023 12 9.02785e-01 6.32094e-01 692 2024 1 1.73307e+00 8.54219e-01 1035 2024 2 7.80530e+00 3.08220e+00 960 2024 3 1.01392e+01 4.85437e+00 699 2024 4 1.79709e+01 2.10919e+00 128