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 5.67435e+00 2.42657e+00 192 2002 8 5.65528e+00 1.73543e+00 379 2002 9 4.98737e+00 1.37106e+00 163 2002 10 5.19710e+00 1.42086e+00 613 2002 11 6.58026e+00 3.00150e+00 624 2002 12 7.31773e+00 4.64144e+00 570 2003 1 1.23876e+01 8.70795e+00 747 2003 2 7.49148e+00 3.79821e+00 416 2003 3 nan nan 0 2003 4 2.82479e+01 1.09128e+01 14 2003 5 2.35682e+01 1.34007e+01 41 2003 6 1.87137e+01 1.07094e+01 46 2003 7 nan nan 0 2003 8 3.57220e+01 0.00000e+00 2 2003 9 2.50985e+01 1.30036e+01 138 2003 10 1.29667e+01 8.15487e+00 630 2003 11 1.30485e+01 9.99920e+00 487 2003 12 6.86846e+00 4.33798e+00 631 2004 1 6.39561e+00 3.35995e+00 727 2004 2 1.19967e+01 1.06906e+01 364 2004 3 1.57894e+01 9.87333e+00 273 2004 4 5.80834e+00 2.38194e+00 309 2004 5 5.52027e+00 1.65809e+00 418 2004 6 7.38932e+00 6.08021e+00 414 2004 7 1.12863e+01 9.69632e+00 153 2004 8 9.15761e+00 4.71622e+00 342 2004 9 1.48196e+01 1.22334e+01 65 2004 10 nan nan 0 2004 11 2.82080e+01 8.53759e+00 36 2004 12 1.89083e+01 9.51914e+00 222 2005 1 1.21268e+01 9.02716e+00 349 2005 2 1.21337e+01 5.50544e+00 167 2005 3 1.62317e+01 1.13739e+01 134 2005 4 4.19472e+01 6.00364e+00 24 2005 5 nan nan 0 2005 6 1.28759e+01 7.51991e+00 5 2005 7 nan nan 0 2005 8 nan nan 0 2005 9 1.13895e+01 7.43686e+00 136 2005 10 9.62735e+00 5.24855e+00 702 2005 11 8.18674e+00 5.27006e+00 763 2005 12 8.28924e+00 5.31923e+00 785 2006 1 1.79971e+01 9.76195e+00 217 2006 2 2.98501e+01 1.26079e+01 73 2006 3 2.26192e+01 1.09311e+01 359 2006 4 1.09519e+01 9.02704e+00 361 2006 5 5.44077e+00 2.03637e+00 241 2006 6 5.57718e+00 1.38619e+00 182 2006 7 9.51661e+00 4.35395e+00 114 2006 8 7.73259e+00 2.54848e+00 262 2006 9 6.65336e+00 2.13698e+00 729 2006 10 6.02025e+00 3.61646e+00 713 2006 11 3.71143e+00 1.34744e+00 694 2006 12 4.33206e+00 5.10763e+00 399 2007 1 2.82208e+00 1.20522e+00 357 2007 2 5.06316e+00 3.12433e+00 625 2007 3 5.57045e+00 2.68653e+00 881 2007 4 4.03463e+00 1.30452e+00 539 2007 5 4.54965e+00 1.47336e+00 127 2007 6 3.78319e+00 1.27700e+00 105 2007 7 7.91230e+00 4.96441e+00 286 2007 8 9.12353e+00 3.78742e+00 300 2007 9 7.76794e+00 5.21231e+00 295 2007 10 5.37278e+00 3.61241e+00 519 2007 11 7.05709e+00 5.60987e+00 894 2007 12 6.66633e+00 4.59009e+00 692 2008 1 5.15369e+00 4.96441e+00 619 2008 2 6.88279e+00 3.18633e+00 679 2008 3 2.19340e+01 1.10053e+01 259 2008 4 2.60983e+01 1.13651e+01 148 2008 5 1.20669e+01 6.54407e+00 192 2008 6 7.91277e+00 5.01094e+00 272 2008 7 6.75424e+00 3.02927e+00 334 2008 8 9.03632e+00 2.79598e+00 90 2008 9 1.96994e+01 1.01518e+01 136 2008 10 1.42029e+01 8.64871e+00 544 2008 11 6.57658e+00 3.99370e+00 888 2008 12 1.47291e+01 9.30502e+00 595 2009 1 9.45878e+00 5.54165e+00 473 2009 2 6.25011e+00 2.93639e+00 859 2009 3 6.25091e+00 3.33537e+00 706 2009 4 9.88082e+00 6.19864e+00 164 2009 5 1.51705e+01 5.59659e+00 59 2009 6 7.55268e+00 3.00452e+00 64 2009 7 nan nan 0 2009 8 1.51214e+01 7.55798e+00 188 2009 9 1.95746e+01 1.11972e+01 399 2009 10 9.34099e+00 8.02352e+00 723 2009 11 5.17766e+00 3.69693e+00 750 2009 12 5.56356e+00 2.95048e+00 192 2010 1 9.83578e+00 8.72829e+00 683 2010 2 1.73735e+01 9.15955e+00 308 2010 3 1.81795e+01 8.81562e+00 396 2010 4 1.20332e+01 3.23919e+00 31 2010 5 1.23945e+01 6.11105e+00 276 2010 6 8.72850e+00 5.41659e+00 346 2010 7 1.91718e+01 1.15360e+01 132 2010 8 7.62140e+00 1.34476e+00 64 2010 9 1.31989e+01 6.11089e+00 272 2010 10 6.38871e+00 3.32634e+00 1416 2010 11 5.95330e+00 3.48438e+00 1060 2010 12 3.85954e+00 2.57847e+00 746 2011 1 4.25690e+00 2.29609e+00 628 2011 2 4.26148e+00 2.60067e+00 811 2011 3 6.05062e+00 2.61545e+00 779 2011 4 7.64816e+00 5.82852e+00 489 2011 5 5.41434e+00 4.74457e+00 542 2011 6 5.48944e+00 1.38544e+00 181 2011 7 5.66194e+00 1.68630e+00 293 2011 8 5.02063e+00 2.12948e+00 111 2011 9 4.55041e+00 1.14107e+00 603 2011 10 4.09921e+00 1.95007e+00 721 2011 11 4.17612e+00 2.52864e+00 1024 2011 12 3.30892e+00 1.53001e+00 717 2012 1 3.87651e+00 2.79376e+00 904 2012 2 2.13831e+00 1.01157e+00 42 2012 3 8.67054e+00 6.00586e+00 633 2012 4 6.43401e+00 3.62981e+00 606 2012 5 4.75344e+00 1.13093e+00 256 2012 6 7.75785e+00 1.63627e+00 21 2012 7 nan nan 0 2012 8 nan nan 0 2012 9 nan nan 0 2012 10 1.77769e+01 9.72078e+00 143 2012 11 8.18841e+00 6.72247e+00 639 2012 12 6.97153e+00 2.41494e+00 447 2013 1 4.60137e+00 2.38820e+00 471 2013 2 3.99697e+00 1.00051e+00 402 2013 3 1.00638e+01 7.95726e+00 379 2013 4 2.27436e+01 8.50358e+00 6 2013 5 9.97307e+00 4.26783e+00 92 2013 6 2.88389e+01 1.24123e+01 58 2013 7 nan nan 0 2013 8 nan nan 0 2013 9 1.23570e+01 8.11847e+00 15 2013 10 1.27512e+01 7.67910e+00 453 2013 11 1.32449e+01 1.11832e+01 340 2013 12 7.87649e+00 4.05362e+00 612 2014 1 1.16684e+01 9.76335e+00 294 2014 2 1.52149e+01 9.76705e+00 284 2014 3 1.89463e+01 1.13628e+01 165 2014 4 nan nan 0 2014 5 nan nan 0 2014 6 1.60112e+01 5.04191e+00 64 2014 7 1.47864e+01 7.57958e+00 127 2014 8 1.58555e+01 7.97717e+00 154 2014 9 8.29620e+00 3.19810e+00 64 2014 10 1.44532e+01 9.42705e+00 595 2014 11 6.67173e+00 4.06358e+00 839 2014 12 7.80536e+00 6.69148e+00 602 2015 1 1.42846e+01 1.03187e+01 479 2015 2 1.19373e+01 7.39594e+00 280 2015 3 2.62287e+01 9.33007e+00 198 2015 4 3.03635e+01 1.11405e+01 57 2015 5 1.11955e+01 1.01461e+01 270 2015 6 7.93756e+00 3.60039e+00 203 2015 7 1.45010e+01 8.78148e+00 120 2015 8 2.79538e+01 1.04808e+01 62 2015 9 3.75139e+01 8.17713e+00 19 2015 10 1.05047e+01 5.94046e+00 468 2015 11 1.24441e+01 7.69324e+00 451 2015 12 6.74886e+00 3.45450e+00 570 2016 1 1.01572e+01 4.73625e+00 404 2016 2 1.85266e+01 9.65067e+00 425 2016 3 1.90926e+01 1.08161e+01 332 2016 4 1.79768e+01 8.73587e+00 225 2016 5 1.45300e+01 7.04021e+00 382 2016 6 7.52913e+00 2.21323e+00 429 2016 7 1.18240e+01 5.36300e+00 519 2016 8 9.57274e+00 6.24698e+00 394 2016 9 3.30978e+01 9.45142e+00 163 2016 10 8.29386e+00 4.38263e+00 665 2016 11 5.53086e+00 2.00940e+00 806 2016 12 3.59632e+00 1.49850e+00 767 2017 1 5.67023e+00 3.09686e+00 479 2017 2 2.09951e+01 1.06853e+01 269 2017 3 1.01345e+01 7.41705e+00 756 2017 4 6.10931e+00 3.31295e+00 559 2017 5 4.58717e+00 1.96010e+00 361 2017 6 5.09163e+00 1.91397e+00 320 2017 7 nan nan 0 2017 8 1.75610e+01 1.16672e+01 171 2017 9 1.25798e+01 7.20216e+00 41 2017 10 1.57324e+01 5.93808e+00 5 2017 11 1.19565e+01 7.18316e+00 810 2017 12 8.93132e+00 5.72810e+00 554 2018 1 5.50395e+00 2.45340e+00 664 2018 2 1.42693e+01 9.14920e+00 551 2018 3 8.21333e+00 3.77475e+00 691 2018 4 7.82575e+00 4.02911e+00 395 2018 5 7.08984e+00 4.38683e+00 360 2018 6 1.48094e+01 9.89626e+00 75 2018 7 nan nan 0 2018 8 4.99263e+01 0.00000e+00 2 2018 9 2.75202e+01 1.21393e+01 138 2018 10 1.42861e+01 1.00205e+01 726 2018 11 8.00499e+00 3.72981e+00 383 2018 12 1.04835e+01 4.16828e+00 245 2019 1 2.70118e+01 1.17790e+01 35 2019 2 nan nan 0 2019 3 1.56940e+01 7.25496e+00 138 2019 4 8.85149e+00 1.83416e+00 218 2019 5 6.14183e+00 1.87444e+00 414 2019 6 4.84243e+00 1.23774e+00 128 2019 7 1.09475e+01 4.52017e+00 73 2019 8 2.38257e+01 7.83172e+00 43 2019 9 9.55746e+00 5.48137e+00 323 2019 10 7.83406e+00 3.77316e+00 473 2019 11 5.00163e+00 2.30127e+00 636 2019 12 6.13663e+00 2.68058e+00 277 2020 1 6.71790e+00 2.95507e+00 500 2020 2 7.02554e+00 2.38436e+00 509 2020 3 1.39000e+01 8.45411e+00 226 2020 4 1.06025e+01 3.31774e+00 119 2020 5 1.36965e+01 6.72268e+00 196 2020 6 3.44243e+01 9.62885e+00 8 2020 7 1.35707e+01 3.43942e+00 19 2020 8 1.84941e+01 7.52133e+00 30 2020 9 7.10186e+00 0.00000e+00 2 2020 10 1.62643e+01 1.17658e+01 219 2020 11 1.07399e+01 6.80544e+00 570 2020 12 5.67155e+00 1.96468e+00 457 2021 1 1.14557e+01 8.29375e+00 220 2021 2 2.22315e+01 1.02589e+01 303 2021 3 1.57709e+01 1.25281e+01 16 2021 4 4.02997e+01 2.12586e+00 3 2021 5 1.32694e+01 8.10957e+00 163 2021 6 6.14594e+00 1.97654e+00 138 2021 7 nan nan 0 2021 8 5.61613e+00 0.00000e+00 5 2021 9 1.99155e+01 9.30823e+00 88 2021 10 2.18806e+01 1.19927e+01 115 2021 11 9.46238e+00 7.17323e+00 529 2021 12 9.55875e+00 5.79319e+00 518 2022 1 9.04043e+00 2.67245e+00 558 2022 2 8.44754e+00 5.19817e+00 824 2022 3 1.02236e+01 6.54480e+00 631 2022 4 3.59133e+00 0.00000e+00 1 2022 5 1.41800e+01 8.88693e+00 135 2022 6 1.51343e+01 8.31754e+00 203 2022 7 1.11960e+01 7.07738e+00 242 2022 8 2.06526e+01 8.12121e+00 94 2022 9 7.21325e+00 1.74669e+00 48 2022 10 9.61970e+00 8.41124e+00 780 2022 11 1.05800e+01 5.17886e+00 362 2022 12 8.13549e+00 5.65821e+00 641 2023 1 5.19474e+00 3.06482e+00 787 2023 2 1.29594e+01 9.21894e+00 607 2023 3 2.59350e+01 1.15929e+01 385 2023 4 1.13985e+01 6.38852e+00 266 2023 5 1.01807e+01 3.52732e+00 230 2023 6 1.33387e+01 7.87245e+00 291 2023 7 2.32378e+01 1.22968e+01 71 2023 8 1.88975e+01 9.53799e+00 111 2023 9 1.63289e+01 1.30879e+01 87 2023 10 1.47148e+01 9.70607e+00 381 2023 11 1.07903e+01 7.18076e+00 611 2023 12 1.26041e+01 9.13222e+00 208 2024 1 nan nan 0 2024 2 2.10819e+01 9.55517e+00 192 2024 3 1.98192e+01 8.85430e+00 191 2024 4 nan nan 0