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 4.15494e+00 7.01986e-01 200 2002 8 4.07374e+00 1.04097e+00 384 2002 9 4.43157e+00 8.35485e-01 247 2002 10 4.64753e+00 1.18123e+00 562 2002 11 5.36683e+00 2.48883e+00 733 2002 12 5.10524e+00 2.63743e+00 636 2003 1 5.43261e+00 1.87281e+00 808 2003 2 5.35987e+00 2.56068e+00 572 2003 3 nan nan 0 2003 4 3.39970e+01 1.05428e+01 12 2003 5 1.30949e+01 1.02613e+01 167 2003 6 2.58316e+01 1.02995e+01 63 2003 7 3.18835e+01 8.10412e+00 6 2003 8 2.64367e+01 8.22688e+00 116 2003 9 1.43537e+01 8.88137e+00 271 2003 10 9.50512e+00 4.14781e+00 692 2003 11 7.97181e+00 2.78766e+00 848 2003 12 4.69410e+00 2.15505e+00 727 2004 1 5.36377e+00 1.57252e+00 759 2004 2 5.24589e+00 2.62981e+00 384 2004 3 1.56581e+01 7.50987e+00 782 2004 4 5.14873e+00 1.67718e+00 307 2004 5 4.80007e+00 1.39012e+00 552 2004 6 5.41683e+00 2.84190e+00 398 2004 7 8.46323e+00 2.63748e+00 270 2004 8 8.84604e+00 6.19900e+00 343 2004 9 1.38137e+01 8.41541e+00 64 2004 10 nan nan 0 2004 11 3.18271e+01 9.40302e+00 7 2004 12 1.74562e+01 7.78565e+00 275 2005 1 1.19248e+01 6.95072e+00 450 2005 2 1.17300e+01 5.25691e+00 450 2005 3 9.95077e+00 8.79987e+00 305 2005 4 1.82161e+01 1.05261e+01 172 2005 5 2.54384e+01 7.64845e+00 63 2005 6 1.84409e+01 8.49371e+00 183 2005 7 4.81959e+01 0.00000e+00 1 2005 8 2.43337e+01 7.46173e+00 130 2005 9 1.71976e+01 9.51620e+00 262 2005 10 6.59478e+00 2.31911e+00 889 2005 11 5.01114e+00 2.60205e+00 854 2005 12 6.13546e+00 2.72699e+00 660 2006 1 1.63822e+01 8.10126e+00 407 2006 2 2.05084e+01 1.00247e+01 250 2006 3 2.20078e+01 1.12135e+01 791 2006 4 6.71497e+00 2.84580e+00 378 2006 5 4.99610e+00 1.68251e+00 416 2006 6 6.51374e+00 2.25856e+00 235 2006 7 8.68993e+00 3.39837e+00 178 2006 8 7.09262e+00 2.42965e+00 254 2006 9 5.57185e+00 1.64022e+00 704 2006 10 4.89454e+00 2.77189e+00 731 2006 11 4.11313e+00 2.01487e+00 821 2006 12 2.69938e+00 5.22067e-01 387 2007 1 3.23011e+00 9.57386e-01 368 2007 2 4.07886e+00 2.66960e+00 687 2007 3 4.45517e+00 1.89373e+00 897 2007 4 4.06054e+00 1.47792e+00 531 2007 5 4.11442e+00 1.48674e+00 145 2007 6 4.84831e+00 1.38942e+00 253 2007 7 6.62742e+00 2.41870e+00 360 2007 8 5.77764e+00 8.88324e-01 329 2007 9 6.07688e+00 2.60814e+00 393 2007 10 4.57378e+00 1.18710e+00 537 2007 11 3.83973e+00 1.78667e+00 906 2007 12 4.51012e+00 1.48128e+00 586 2008 1 4.98374e+00 3.42967e+00 506 2008 2 5.13575e+00 1.33166e+00 704 2008 3 7.14548e+00 5.53950e+00 303 2008 4 2.13074e+01 7.84743e+00 290 2008 5 1.43636e+01 7.32834e+00 361 2008 6 8.70019e+00 3.78932e+00 330 2008 7 5.31874e+00 2.00227e+00 368 2008 8 1.16001e+01 9.44509e+00 116 2008 9 1.11959e+01 5.73459e+00 198 2008 10 1.18242e+01 6.55212e+00 719 2008 11 4.64252e+00 3.09348e+00 1017 2008 12 1.17103e+01 6.50129e+00 747 2009 1 8.63880e+00 5.96313e+00 643 2009 2 4.60679e+00 1.64446e+00 884 2009 3 4.95097e+00 2.65737e+00 794 2009 4 1.21130e+01 9.00258e+00 253 2009 5 1.92215e+01 1.02183e+01 121 2009 6 4.75308e+00 1.92776e+00 150 2009 7 2.28104e+01 9.15841e+00 41 2009 8 1.55715e+01 6.32435e+00 450 2009 9 1.21229e+01 5.73871e+00 456 2009 10 6.84499e+00 3.05049e+00 774 2009 11 4.07072e+00 1.82001e+00 604 2009 12 3.45107e+00 1.87160e+00 262 2010 1 7.43956e+00 6.16476e+00 819 2010 2 1.00300e+01 3.94450e+00 696 2010 3 1.52885e+01 8.22041e+00 607 2010 4 2.05244e+01 1.08520e+01 235 2010 5 1.50540e+01 1.06706e+01 292 2010 6 9.63236e+00 5.53569e+00 508 2010 7 1.19128e+01 5.29460e+00 294 2010 8 1.43768e+01 9.45732e+00 165 2010 9 9.20689e+00 3.46874e+00 438 2010 10 5.32707e+00 2.40685e+00 1526 2010 11 4.59371e+00 1.68665e+00 1147 2010 12 3.29694e+00 1.39488e+00 759 2011 1 3.61086e+00 1.51402e+00 525 2011 2 4.00078e+00 3.15516e+00 798 2011 3 5.77963e+00 2.51109e+00 842 2011 4 6.05265e+00 2.18420e+00 570 2011 5 4.33564e+00 1.87313e+00 634 2011 6 3.83208e+00 6.03421e-01 256 2011 7 4.87605e+00 1.16152e+00 326 2011 8 4.85597e+00 2.68418e+00 302 2011 9 4.14391e+00 9.10906e-01 637 2011 10 4.07288e+00 1.65968e+00 1003 2011 11 3.41615e+00 1.20398e+00 1023 2011 12 3.24395e+00 1.05492e+00 704 2012 1 3.68824e+00 3.10160e+00 955 2012 2 3.06178e+00 8.40633e-01 192 2012 3 5.86240e+00 3.42741e+00 674 2012 4 5.82775e+00 5.46502e+00 780 2012 5 3.76048e+00 8.07218e-01 306 2012 6 9.96984e+00 5.34402e+00 80 2012 7 2.22725e+01 5.83315e+00 9 2012 8 3.14842e+01 7.49605e+00 49 2012 9 1.62428e+01 7.51186e+00 246 2012 10 1.87456e+01 8.41857e+00 309 2012 11 5.36060e+00 1.52323e+00 722 2012 12 5.49041e+00 1.59859e+00 405 2013 1 5.11247e+00 3.09380e+00 610 2013 2 4.28164e+00 7.46119e-01 379 2013 3 5.35201e+00 3.08545e+00 564 2013 4 3.53356e+01 8.82240e+00 35 2013 5 1.63296e+01 1.17251e+01 358 2013 6 2.97225e+01 9.61769e+00 156 2013 7 2.98116e+01 9.20937e+00 54 2013 8 3.53831e+01 1.01861e+01 58 2013 9 2.40659e+01 6.81090e+00 40 2013 10 1.19407e+01 6.06263e+00 710 2013 11 8.68684e+00 2.56721e+00 458 2013 12 5.63553e+00 1.65466e+00 605 2014 1 6.74264e+00 2.15386e+00 298 2014 2 1.31441e+01 1.02996e+01 462 2014 3 1.11717e+01 6.04505e+00 436 2014 4 1.84946e+01 6.78586e+00 101 2014 5 2.39484e+01 8.33665e+00 60 2014 6 9.94570e+00 1.72643e+00 104 2014 7 1.69068e+01 8.92097e+00 395 2014 8 8.06492e+00 2.10151e+00 292 2014 9 5.19270e+00 2.91612e+00 43 2014 10 1.06928e+01 5.51762e+00 1132 2014 11 5.02532e+00 2.40080e+00 816 2014 12 4.19298e+00 3.78173e+00 452 2015 1 7.19340e+00 3.19579e+00 642 2015 2 1.02144e+01 8.12869e+00 457 2015 3 2.14954e+01 9.10441e+00 316 2015 4 1.97795e+01 9.27066e+00 102 2015 5 1.21861e+01 7.98372e+00 423 2015 6 6.47591e+00 1.78057e+00 256 2015 7 7.27960e+00 3.03640e+00 176 2015 8 3.00876e+01 1.28495e+01 21 2015 9 1.58955e+01 1.04862e+01 179 2015 10 7.09659e+00 2.83202e+00 546 2015 11 1.03303e+01 6.85363e+00 515 2015 12 6.61846e+00 2.49876e+00 554 2016 1 6.08019e+00 2.08127e+00 499 2016 2 1.34845e+01 1.09236e+01 705 2016 3 1.42681e+01 9.19266e+00 498 2016 4 1.13951e+01 6.40238e+00 235 2016 5 1.10594e+01 4.30767e+00 560 2016 6 6.69259e+00 1.47409e+00 576 2016 7 7.60272e+00 1.74024e+00 646 2016 8 8.92300e+00 4.03487e+00 347 2016 9 1.41692e+01 6.57596e+00 461 2016 10 7.85149e+00 3.73161e+00 784 2016 11 4.85252e+00 1.42240e+00 852 2016 12 4.04007e+00 1.41535e+00 781 2017 1 4.85417e+00 1.96255e+00 519 2017 2 1.40682e+01 6.86215e+00 834 2017 3 6.85376e+00 3.76849e+00 798 2017 4 5.24625e+00 2.57498e+00 661 2017 5 4.75092e+00 1.79264e+00 389 2017 6 5.76808e+00 1.12014e+00 193 2017 7 1.16082e+01 5.32154e+00 80 2017 8 1.52916e+01 8.60110e+00 385 2017 9 1.23785e+01 8.40237e+00 219 2017 10 1.25440e+01 3.72357e+00 71 2017 11 1.04219e+01 4.72346e+00 1033 2017 12 5.97596e+00 2.28967e+00 469 2018 1 4.62330e+00 1.22577e+00 575 2018 2 1.21992e+01 7.21017e+00 523 2018 3 6.79298e+00 3.11883e+00 700 2018 4 7.36241e+00 2.72953e+00 550 2018 5 7.80348e+00 3.96600e+00 356 2018 6 1.02704e+01 5.80096e+00 256 2018 7 6.89192e+00 8.90532e+00 6 2018 8 nan nan 0 2018 9 1.53479e+01 9.71347e+00 595 2018 10 8.80793e+00 4.34596e+00 928 2018 11 6.24683e+00 2.01358e+00 221 2018 12 1.36234e+01 9.42822e+00 354 2019 1 1.91328e+01 1.05675e+01 108 2019 2 4.39234e+01 4.14035e+00 7 2019 3 1.57058e+01 7.23248e+00 565 2019 4 9.20927e+00 3.02384e+00 384 2019 5 7.03311e+00 1.74753e+00 641 2019 6 5.63771e+00 1.54916e+00 134 2019 7 7.20493e+00 3.80711e+00 138 2019 8 1.29532e+01 3.77520e+00 176 2019 9 7.48753e+00 3.00130e+00 462 2019 10 6.87703e+00 1.96006e+00 536 2019 11 5.50186e+00 1.50856e+00 568 2019 12 6.10888e+00 2.99151e+00 387 2020 1 7.24497e+00 3.41354e+00 534 2020 2 7.01380e+00 2.53683e+00 530 2020 3 1.26004e+01 8.37858e+00 484 2020 4 9.55765e+00 3.01468e+00 261 2020 5 1.17206e+01 7.21786e+00 530 2020 6 1.39355e+01 8.45283e+00 231 2020 7 7.53325e+00 4.23992e+00 42 2020 8 1.45856e+01 5.92452e+00 220 2020 9 1.31761e+01 9.43026e+00 99 2020 10 1.33021e+01 8.55371e+00 416 2020 11 7.56842e+00 2.17913e+00 648 2020 12 5.13381e+00 1.84861e+00 483 2021 1 4.78808e+00 1.33177e+00 155 2021 2 1.46746e+01 9.58623e+00 393 2021 3 1.61623e+01 8.09089e+00 229 2021 4 2.01571e+01 8.90957e+00 285 2021 5 1.02759e+01 2.91032e+00 415 2021 6 7.51085e+00 2.79746e+00 180 2021 7 1.43722e+01 1.11212e+01 138 2021 8 2.73153e-02 4.70648e-02 13 2021 9 2.37176e+01 9.61244e+00 20 2021 10 1.56821e+01 7.36669e+00 457 2021 11 7.71057e+00 3.23849e+00 669 2021 12 7.59221e+00 3.37638e+00 587 2022 1 9.69514e+00 4.08542e+00 487 2022 2 7.25869e+00 3.02480e+00 757 2022 3 9.00739e+00 6.78054e+00 626 2022 4 nan nan 0 2022 5 1.18704e+01 5.39288e+00 322 2022 6 8.52996e+00 3.20793e+00 326 2022 7 9.29479e+00 5.66147e+00 275 2022 8 1.48509e+01 1.11185e+01 235 2022 9 9.49362e+00 8.17316e+00 219 2022 10 4.27908e+00 1.88965e+00 1021 2022 11 8.28634e+00 2.79441e+00 289 2022 12 6.18343e+00 3.12962e+00 647 2023 1 4.64835e+00 1.31691e+00 732 2023 2 9.26348e+00 7.17264e+00 507 2023 3 1.43366e+01 7.51784e+00 381 2023 4 1.29146e+01 9.04341e+00 457 2023 5 7.88562e+00 1.24309e+00 128 2023 6 6.64782e+00 1.87642e+00 284 2023 7 9.95689e+00 6.30422e+00 499 2023 8 1.20190e+01 8.27862e+00 246 2023 9 1.96631e+01 9.32290e+00 279 2023 10 1.02684e+01 6.85148e+00 712 2023 11 6.32623e+00 2.64991e+00 609 2023 12 9.48110e+00 6.02095e+00 265 2024 1 1.39046e+01 5.77402e+00 64 2024 2 1.98131e+01 9.97615e+00 461 2024 3 1.32580e+01 7.09544e+00 291 2024 4 nan nan 0