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 1.79038e+00 9.36388e-01 166 2002 8 1.37536e+00 5.31845e-01 131 2002 9 4.35878e+00 2.45722e+00 108 2002 10 2.33645e+00 2.29250e+00 630 2002 11 3.75257e+00 2.86720e+00 706 2002 12 3.10286e+00 1.65936e+00 607 2003 1 5.04033e+00 3.41927e+00 948 2003 2 4.66521e+00 2.10824e+00 610 2003 3 nan nan 0 2003 4 2.43169e+01 9.85457e+00 35 2003 5 nan nan 0 2003 6 7.65024e+00 5.78625e+00 69 2003 7 5.27334e+00 6.14674e+00 47 2003 8 1.36633e+01 9.12739e+00 37 2003 9 7.90535e+00 8.76025e+00 137 2003 10 3.88286e+00 3.25350e+00 487 2003 11 2.69323e+00 1.92186e+00 870 2003 12 3.99044e+00 1.51823e+00 858 2004 1 3.35220e+00 1.48099e+00 702 2004 2 4.39285e+00 2.82087e+00 197 2004 3 9.87230e+00 8.00226e+00 304 2004 4 3.23081e+00 1.44102e+00 404 2004 5 2.65817e+00 2.13912e+00 359 2004 6 2.88865e+00 1.56051e+00 207 2004 7 4.19968e+00 3.43331e+00 200 2004 8 3.45483e+00 2.29946e+00 217 2004 9 3.62254e+00 2.01458e+00 7 2004 10 nan nan 0 2004 11 1.45124e+01 7.75316e+00 222 2004 12 7.87176e+00 2.73221e+00 364 2005 1 6.69573e+00 3.29453e+00 607 2005 2 6.03575e+00 3.86606e+00 436 2005 3 5.97893e+00 4.28473e+00 482 2005 4 9.86329e+00 5.42227e+00 148 2005 5 nan nan 0 2005 6 1.76183e+01 1.42642e+01 130 2005 7 2.46908e+01 1.75363e+01 3 2005 8 nan nan 0 2005 9 6.46335e+00 4.96238e+00 189 2005 10 5.03732e+00 3.78599e+00 537 2005 11 2.51415e+00 7.90690e-01 704 2005 12 3.24285e+00 1.99395e+00 888 2006 1 6.35715e+00 3.67030e+00 636 2006 2 7.96058e+00 3.84873e+00 687 2006 3 9.18424e+00 4.97082e+00 616 2006 4 3.38312e+00 1.09597e+00 123 2006 5 2.27470e+00 1.14933e+00 362 2006 6 1.91736e+00 8.73774e-01 289 2006 7 1.98017e+00 1.43351e+00 203 2006 8 2.68816e+00 9.98281e-01 168 2006 9 3.45373e+00 1.01863e+00 358 2006 10 2.73546e+00 1.60970e+00 652 2006 11 2.03571e+00 1.13991e+00 772 2006 12 7.74543e-01 4.57428e-01 377 2007 1 1.30423e+00 7.10938e-01 426 2007 2 2.48437e+00 3.08354e+00 698 2007 3 1.10668e+00 6.98864e-01 890 2007 4 1.15414e+00 7.19795e-01 449 2007 5 1.28067e+00 8.08038e-01 72 2007 6 2.93911e+00 9.91026e-01 72 2007 7 4.04038e+00 9.93898e-01 316 2007 8 3.54330e+00 1.06941e+00 320 2007 9 1.99860e+00 1.71645e+00 272 2007 10 9.90799e-01 4.56330e-01 498 2007 11 9.77535e-01 5.24429e-01 992 2007 12 1.56901e+00 2.38512e+00 617 2008 1 1.94143e+00 1.91546e+00 699 2008 2 1.49062e+00 1.41347e+00 947 2008 3 3.52758e+00 2.88229e+00 694 2008 4 4.35477e+00 2.05952e+00 129 2008 5 3.59984e+00 1.42913e+00 274 2008 6 2.77481e+00 1.08752e+00 155 2008 7 2.56796e+00 9.47480e-01 237 2008 8 2.99329e+00 4.42827e-01 64 2008 9 8.84518e+00 1.30019e+01 86 2008 10 2.76151e+00 1.47815e+00 717 2008 11 2.40847e+00 1.60571e+00 857 2008 12 3.78566e+00 2.35284e+00 796 2009 1 4.02211e+00 2.78127e+00 695 2009 2 2.47496e+00 1.58803e+00 908 2009 3 1.80616e+00 1.09252e+00 828 2009 4 3.80192e+00 1.75146e+00 255 2009 5 7.00625e+00 6.61947e+00 108 2009 6 4.27585e+00 5.98099e+00 192 2009 7 2.81008e+00 6.47058e-01 64 2009 8 6.54549e+00 1.71896e+00 26 2009 9 3.86810e+00 1.92058e+00 206 2009 10 3.04066e+00 3.21544e+00 601 2009 11 1.32629e+00 8.74997e-01 631 2009 12 1.93797e+00 9.06285e-01 192 2010 1 4.45641e+00 2.18865e+00 940 2010 2 1.39178e+01 7.01138e+00 547 2010 3 1.50227e+01 6.97292e+00 629 2010 4 8.78850e+00 6.96127e+00 179 2010 5 6.99413e+00 7.64361e+00 208 2010 6 4.31864e+00 2.47020e+00 83 2010 7 5.18812e+00 5.31611e+00 130 2010 8 7.92590e+00 4.65369e+00 72 2010 9 5.51023e+00 4.20927e+00 249 2010 10 2.61618e+00 1.38036e+00 1215 2010 11 1.44329e+00 1.07033e+00 1079 2010 12 2.56284e+00 1.77435e+00 860 2011 1 2.21515e+00 1.59139e+00 621 2011 2 2.44501e+00 2.09559e+00 570 2011 3 2.95604e+00 1.34512e+00 864 2011 4 2.41669e+00 1.12718e+00 470 2011 5 1.61983e+00 1.26552e+00 455 2011 6 1.64666e+00 8.82599e-01 162 2011 7 2.04131e+00 1.21542e+00 166 2011 8 2.19479e+00 9.04959e-01 296 2011 9 1.38261e+00 6.54327e-01 500 2011 10 1.47993e+00 8.87656e-01 911 2011 11 1.14323e+00 8.55806e-01 940 2011 12 1.06452e+00 6.95858e-01 813 2012 1 1.45942e+00 9.02931e-01 912 2012 2 1.17924e+00 5.00874e-01 191 2012 3 1.34181e+00 1.09540e+00 610 2012 4 1.22741e+00 5.78100e-01 541 2012 5 1.50732e+00 7.55095e-01 276 2012 6 2.37493e+00 1.78854e+00 133 2012 7 1.70135e+01 1.91832e+01 12 2012 8 2.82843e+01 2.80656e+00 3 2012 9 3.60710e+01 6.42671e+00 36 2012 10 1.40429e+01 9.59074e+00 305 2012 11 6.30754e+00 5.02070e+00 655 2012 12 4.12507e+00 2.03568e+00 290 2013 1 2.88047e+00 2.15219e+00 536 2013 2 2.15753e+00 6.43887e-01 493 2013 3 4.26519e+00 3.59258e+00 477 2013 4 5.57718e+00 3.20349e+00 319 2013 5 3.00850e+00 1.79404e+00 280 2013 6 3.01146e+00 5.46766e+00 150 2013 7 nan nan 0 2013 8 nan nan 0 2013 9 1.24364e+01 1.20391e+01 75 2013 10 8.28649e+00 7.69137e+00 331 2013 11 2.41420e+00 2.03351e+00 314 2013 12 1.96742e+00 9.03939e-01 641 2014 1 3.18311e+00 1.79124e+00 633 2014 2 5.20723e+00 2.67281e+00 561 2014 3 1.23075e+01 8.61280e+00 353 2014 4 nan nan 0 2014 5 nan nan 0 2014 6 nan nan 0 2014 7 9.07177e+00 6.00899e+00 271 2014 8 2.50820e+00 2.15836e+00 99 2014 9 4.50704e+00 3.77395e+00 189 2014 10 5.04670e+00 4.88955e+00 935 2014 11 2.71837e+00 1.75133e+00 957 2014 12 1.29651e+00 1.00061e+00 639 2015 1 1.37820e+00 1.78131e+00 690 2015 2 2.62980e+00 1.29747e+00 652 2015 3 6.81226e+00 4.72188e+00 340 2015 4 nan nan 0 2015 5 3.31184e+00 1.05292e+00 252 2015 6 3.28442e+00 2.57750e+00 266 2015 7 2.69039e+00 6.69220e-01 88 2015 8 1.40016e+01 8.12129e+00 62 2015 9 8.06452e+00 1.05682e+01 127 2015 10 2.61754e+00 1.17291e+00 461 2015 11 6.05618e+00 5.49422e+00 290 2015 12 1.71468e+00 1.11377e+00 508 2016 1 2.00746e+00 6.32234e-01 528 2016 2 4.79430e+00 3.37872e+00 1146 2016 3 4.35271e+00 2.33985e+00 582 2016 4 4.85536e+00 2.09702e+00 266 2016 5 3.38576e+00 2.14055e+00 210 2016 6 2.10686e+00 1.00970e+00 189 2016 7 3.83646e+00 1.99879e+00 350 2016 8 1.59647e+01 1.03036e+01 238 2016 9 1.16226e+01 1.12154e+01 238 2016 10 3.40388e+00 3.95397e+00 649 2016 11 1.32123e+00 7.99376e-01 847 2016 12 1.25847e+00 7.25327e-01 710 2017 1 1.65705e+00 1.02292e+00 560 2017 2 2.43505e+00 1.05067e+00 858 2017 3 1.75189e+00 1.59301e+00 620 2017 4 2.00750e+00 1.02967e+00 409 2017 5 2.42951e+00 1.15558e+00 295 2017 6 2.43944e+00 2.51635e+00 178 2017 7 4.06879e+00 3.61171e+00 106 2017 8 6.53709e+00 5.08546e+00 260 2017 9 7.93632e+00 5.22535e+00 292 2017 10 8.02075e+00 6.75980e+00 158 2017 11 2.52040e+00 1.94477e+00 746 2017 12 1.66963e+00 8.44507e-01 681 2018 1 1.90265e+00 9.82245e-01 597 2018 2 2.83495e+00 1.70625e+00 405 2018 3 3.11906e+00 2.60573e+00 628 2018 4 3.79982e+00 8.48164e-01 90 2018 5 4.60547e+00 1.55341e+00 343 2018 6 6.93503e+00 5.23468e+00 235 2018 7 1.18933e+01 1.24685e+01 71 2018 8 2.73078e+01 1.06833e+01 70 2018 9 1.42124e+01 9.10269e+00 298 2018 10 5.75238e+00 2.83595e+00 550 2018 11 5.29640e+00 2.48760e+00 250 2018 12 6.58269e+00 5.53053e+00 464 2019 1 1.17460e+01 7.27791e+00 439 2019 2 1.55680e+01 9.89820e+00 152 2019 3 6.10858e+00 3.59486e+00 250 2019 4 4.68550e+00 1.56211e+00 256 2019 5 3.19628e+00 1.19110e+00 138 2019 6 5.06170e+00 4.90742e+00 41 2019 7 4.44526e+00 2.84822e+00 136 2019 8 5.88395e+00 6.20614e+00 114 2019 9 1.92310e+00 1.35726e+00 149 2019 10 2.80410e+00 1.31815e+00 309 2019 11 1.82090e+00 1.06833e+00 588 2019 12 2.24610e+00 1.95235e+00 485 2020 1 2.44395e+00 1.20865e+00 530 2020 2 2.35052e+00 1.39081e+00 480 2020 3 2.61352e+00 1.59571e+00 404 2020 4 2.66320e+00 1.29142e+00 427 2020 5 2.26833e+00 1.29895e+00 336 2020 6 2.64733e+00 2.37220e+00 149 2020 7 9.47914e+00 6.87502e+00 62 2020 8 5.49118e+00 5.04707e+00 46 2020 9 1.28260e+01 5.01040e+00 126 2020 10 1.69879e+00 4.64706e-01 66 2020 11 2.30343e+00 2.62099e+00 262 2020 12 2.41234e+00 1.07554e+00 524 2021 1 3.82089e+00 3.12544e+00 489 2021 2 9.22436e+00 6.68857e+00 389 2021 3 8.17680e+00 3.70327e+00 64 2021 4 2.91027e+00 3.76374e+00 28 2021 5 4.57548e+00 3.46845e+00 100 2021 6 2.93227e+00 1.61335e+00 192 2021 7 2.39435e-04 3.38612e-04 3 2021 8 2.03783e+00 0.00000e+00 1 2021 9 1.34126e+01 8.64734e+00 138 2021 10 5.83259e+00 6.44956e+00 277 2021 11 4.06724e+00 2.19197e+00 260 2021 12 3.36181e+00 1.54530e+00 468 2022 1 5.33048e+00 4.96119e+00 786 2022 2 2.22810e+00 1.33003e+00 700 2022 3 5.71019e+00 7.11590e+00 576 2022 4 5.62081e+00 1.83497e+00 5 2022 5 8.06309e+00 3.47491e+00 175 2022 6 4.37481e+00 3.15114e+00 138 2022 7 2.01889e+00 6.08198e-01 127 2022 8 6.58818e+00 1.09192e+01 235 2022 9 1.76262e+00 8.74937e-01 154 2022 10 1.90871e+00 1.32056e+00 1054 2022 11 1.99753e+00 1.38338e+00 363 2022 12 2.39290e+00 2.20264e+00 879 2023 1 2.46163e+00 1.77333e+00 763 2023 2 2.15213e+00 7.39125e-01 490 2023 3 3.84533e+00 3.06906e+00 565 2023 4 3.85942e+00 2.49775e+00 365 2023 5 3.88087e+00 3.11158e+00 320 2023 6 1.63523e+00 2.04900e+00 235 2023 7 6.18079e+00 7.76962e+00 141 2023 8 3.35664e+00 1.69197e+00 119 2023 9 9.08865e+00 4.81589e+00 253 2023 10 4.64380e+00 3.54972e+00 462 2023 11 1.85651e+00 9.24384e-01 342 2023 12 1.02268e+01 1.04671e+01 318 2024 1 2.23838e+01 1.01418e+01 110 2024 2 1.32607e+01 7.24067e+00 452 2024 3 1.35730e+01 3.73172e+00 64 2024 4 nan nan 0