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 nan nan 0 2002 8 nan nan 0 2002 9 3.61836e+00 1.38935e+00 170 2002 10 5.88838e+00 1.86001e+00 260 2002 11 1.36754e+01 2.89176e+00 470 2002 12 5.76592e+00 2.40173e+00 473 2003 1 6.92515e+00 3.38177e+00 682 2003 2 7.62933e+00 2.70652e+00 295 2003 3 5.22856e+00 1.79723e+00 145 2003 4 nan nan 0 2003 5 nan nan 0 2003 6 nan nan 0 2003 7 nan nan 0 2003 8 1.90452e+00 8.58274e-01 9 2003 9 5.83867e+00 3.06423e+00 45 2003 10 7.86235e+00 1.85198e+00 49 2003 11 1.22710e+01 3.49443e+00 345 2003 12 1.35926e+01 3.92253e+00 324 2004 1 1.18616e+01 5.15945e+00 171 2004 2 5.23816e+00 2.35903e+00 332 2004 3 3.30595e+00 9.50619e-01 253 2004 4 2.46345e+00 8.62018e-01 133 2004 5 nan nan 0 2004 6 3.85076e+00 7.82953e-01 24 2004 7 nan nan 0 2004 8 nan nan 0 2004 9 5.87166e+00 2.06128e+00 65 2004 10 5.95074e+00 3.29922e+00 162 2004 11 1.72882e+01 4.13092e+00 39 2004 12 6.61952e+00 3.36281e+00 468 2005 1 9.78407e+00 2.85513e+00 430 2005 2 6.93220e+00 3.42319e+00 581 2005 3 3.59901e+00 1.99688e+00 437 2005 4 2.56355e+00 6.71613e-02 6 2005 5 nan nan 0 2005 6 3.63490e+00 0.00000e+00 1 2005 7 nan nan 0 2005 8 nan nan 0 2005 9 nan nan 0 2005 10 9.03747e+00 2.57579e+00 280 2005 11 6.00550e+00 2.88711e+00 509 2005 12 9.68254e+00 4.16119e+00 860 2006 1 1.14843e+01 3.56636e+00 314 2006 2 4.74511e+00 1.01600e+00 135 2006 3 3.28852e+00 1.56281e+00 235 2006 4 2.58022e+00 1.03062e+00 150 2006 5 nan nan 0 2006 6 nan nan 0 2006 7 nan nan 0 2006 8 nan nan 0 2006 9 nan nan 0 2006 10 1.04944e+01 2.22245e+00 13 2006 11 6.84551e+00 3.35937e+00 795 2006 12 7.23684e+00 4.31551e+00 686 2007 1 9.36413e+00 3.71850e+00 664 2007 2 5.77008e+00 2.78868e+00 529 2007 3 4.65890e+00 1.70469e+00 250 2007 4 nan nan 0 2007 5 3.26836e+00 6.26967e-01 36 2007 6 nan nan 0 2007 7 nan nan 0 2007 8 3.93952e+00 7.04880e-01 41 2007 9 nan nan 0 2007 10 1.07379e+01 4.25472e+00 209 2007 11 1.11869e+01 3.58826e+00 424 2007 12 9.54078e+00 2.41415e+00 643 2008 1 7.56503e+00 1.68441e+00 281 2008 2 5.83634e+00 2.21467e+00 436 2008 3 4.18522e+00 1.84578e+00 260 2008 4 nan nan 0 2008 5 nan nan 0 2008 6 nan nan 0 2008 7 nan nan 0 2008 8 nan nan 0 2008 9 4.82960e+00 6.66120e-01 8 2008 10 6.34176e+00 4.74850e+00 166 2008 11 9.54121e+00 3.17212e+00 462 2008 12 7.73291e+00 5.24536e+00 912 2009 1 6.65082e+00 3.57292e+00 641 2009 2 5.80617e+00 3.75948e+00 342 2009 3 3.69209e+00 1.88269e+00 149 2009 4 nan nan 0 2009 5 1.68229e+00 4.48641e-01 20 2009 6 nan nan 0 2009 7 nan nan 0 2009 8 4.73355e+00 1.88463e+00 40 2009 9 5.56103e+00 2.69316e+00 224 2009 10 7.73488e+00 2.51849e+00 376 2009 11 1.03477e+01 3.93459e+00 579 2009 12 5.29685e+00 2.29000e+00 581 2010 1 1.07473e+01 4.50143e+00 529 2010 2 6.56980e+00 2.42710e+00 280 2010 3 3.83774e+00 1.66096e+00 167 2010 4 4.74632e+00 3.78384e-01 13 2010 5 2.27856e+00 6.90679e-01 36 2010 6 nan nan 0 2010 7 3.90861e+00 1.40333e+00 38 2010 8 nan nan 0 2010 9 3.95734e+00 1.17751e+00 178 2010 10 8.43844e+00 3.95559e+00 456 2010 11 1.12127e+01 3.98999e+00 806 2010 12 5.82763e+00 1.61019e+00 640 2011 1 5.85663e+00 2.14880e+00 653 2011 2 6.49858e+00 4.45223e+00 231 2011 3 4.86411e+00 1.47279e+00 260 2011 4 2.10048e+00 4.54497e-01 29 2011 5 nan nan 0 2011 6 nan nan 0 2011 7 nan nan 0 2011 8 1.38490e+00 4.28167e-01 57 2011 9 6.60073e+00 9.89518e-01 47 2011 10 9.59143e+00 1.94772e+00 87 2011 11 9.50862e+00 3.88442e+00 420 2011 12 5.97798e+00 2.85786e+00 1089 2012 1 4.60402e+00 2.08955e+00 763 2012 2 5.73674e+00 1.71857e+00 359 2012 3 3.79953e+00 1.53886e+00 476 2012 4 2.52927e+00 5.38261e-01 64 2012 5 3.31558e+00 5.15443e-01 15 2012 6 nan nan 0 2012 7 3.22333e+00 6.21686e-01 25 2012 8 4.03798e+00 7.57890e-01 7 2012 9 4.16012e+00 1.76242e+00 72 2012 10 1.03271e+01 3.58465e+00 368 2012 11 9.77164e+00 4.38845e+00 420 2012 12 8.45279e+00 3.22046e+00 382 2013 1 8.71168e+00 5.56169e+00 526 2013 2 4.72220e+00 2.92784e+00 479 2013 3 2.65194e+00 2.24419e+00 120 2013 4 nan nan 0 2013 5 nan nan 0 2013 6 3.74776e+00 3.59108e-01 25 2013 7 2.44548e+00 3.12294e-01 8 2013 8 nan nan 0 2013 9 4.71836e+00 1.85749e+00 90 2013 10 9.29149e+00 3.91664e+00 290 2013 11 5.64747e+00 1.75566e+00 435 2013 12 1.13200e+01 4.70556e+00 367 2014 1 8.07871e+00 3.29865e+00 500 2014 2 5.06395e+00 2.47641e+00 548 2014 3 4.15241e+00 1.48110e+00 341 2014 4 3.52003e+00 2.54076e-01 8 2014 5 nan nan 0 2014 6 3.15129e+00 7.62767e-01 21 2014 7 2.86698e+00 1.16166e+00 88 2014 8 3.42074e+00 1.16455e+00 99 2014 9 5.76520e+00 1.80670e+00 101 2014 10 7.23593e+00 2.24683e+00 464 2014 11 1.00196e+01 3.50657e+00 542 2014 12 7.20386e+00 2.66885e+00 991 2015 1 4.70501e+00 2.18077e+00 572 2015 2 7.02534e+00 1.50278e+00 199 2015 3 6.81051e+00 2.10632e+00 235 2015 4 2.76703e+00 7.26417e-01 45 2015 5 3.06857e+00 4.63328e-01 9 2015 6 nan nan 0 2015 7 2.22307e+00 0.00000e+00 1 2015 8 3.11794e+00 5.12415e-01 5 2015 9 8.27812e+00 9.90211e-01 53 2015 10 1.01341e+01 3.14274e+00 169 2015 11 1.02764e+01 3.25422e+00 548 2015 12 5.80011e+00 2.87297e+00 757 2016 1 5.87947e+00 2.54603e+00 745 2016 2 5.37751e+00 2.63027e+00 953 2016 3 3.67753e+00 1.23302e+00 239 2016 4 2.74557e+00 6.25158e-01 120 2016 5 4.06885e+00 7.68799e-01 32 2016 6 4.41496e+00 1.06937e+00 40 2016 7 nan nan 0 2016 8 2.99580e+00 8.32021e-01 9 2016 9 5.33228e+00 2.57317e+00 149 2016 10 8.08622e+00 4.15099e+00 531 2016 11 9.57153e+00 3.98159e+00 558 2016 12 7.41869e+00 3.86001e+00 443 2017 1 5.63635e+00 3.52760e+00 488 2017 2 4.29189e+00 2.53194e+00 506 2017 3 4.02249e+00 1.62948e+00 412 2017 4 2.18867e+00 5.90752e-01 132 2017 5 4.03442e+00 1.48904e-01 7 2017 6 3.95114e+00 1.22474e+00 20 2017 7 3.72553e+00 5.63091e-01 3 2017 8 4.91170e+00 1.13176e+00 70 2017 9 3.31146e+00 4.40256e-01 7 2017 10 6.87429e+00 3.23546e+00 378 2017 11 1.13665e+01 3.54012e+00 491 2017 12 8.94434e+00 2.70683e+00 558 2018 1 6.73358e+00 3.61228e+00 914 2018 2 9.03230e+00 2.86484e+00 229 2018 3 6.31193e+00 2.58352e+00 229 2018 4 nan nan 0 2018 5 nan nan 0 2018 6 2.53392e+00 1.19868e+00 3 2018 7 2.94653e+00 1.13948e-01 4 2018 8 2.34469e+00 1.08361e+00 112 2018 9 5.59848e+00 2.80438e+00 204 2018 10 1.28382e+01 1.87013e+00 32 2018 11 1.24896e+01 4.02486e+00 191 2018 12 9.44953e+00 3.96048e+00 496 2019 1 1.00057e+01 4.11287e+00 106 2019 2 5.87221e+00 1.99099e+00 432 2019 3 3.48517e+00 1.90620e+00 535 2019 4 3.49730e+00 1.19733e+00 129 2019 5 2.15536e+00 1.02699e+00 53 2019 6 2.91113e+00 1.11569e+00 70 2019 7 9.55703e-01 2.92074e-01 6 2019 8 3.39853e+00 6.26359e-01 24 2019 9 6.47603e+00 1.72407e+00 145 2019 10 7.28609e+00 3.32682e+00 385 2019 11 8.96034e+00 3.38175e+00 519 2019 12 9.25563e+00 4.52590e+00 458 2020 1 7.36750e+00 3.16458e+00 746 2020 2 5.13906e+00 2.79638e+00 550 2020 3 3.60584e+00 1.58108e+00 280 2020 4 2.58762e+00 8.07061e-01 79 2020 5 3.26511e+00 1.42020e+00 45 2020 6 4.08079e+00 6.64256e-01 44 2020 7 3.16971e+00 5.98666e-01 58 2020 8 2.80672e+00 1.35103e+00 83 2020 9 7.50276e+00 1.07584e+00 76 2020 10 9.37402e+00 3.30788e+00 668 2020 11 9.87385e+00 4.38422e+00 335 2020 12 4.63325e+00 1.86819e+00 565 2021 1 4.87009e+00 2.27480e+00 977 2021 2 7.25924e+00 2.39562e+00 438 2021 3 4.82457e+00 2.10397e+00 198 2021 4 3.43436e+00 7.13567e-01 37 2021 5 2.52953e+00 6.13538e-01 36 2021 6 5.22175e+00 0.00000e+00 2 2021 7 2.85908e+00 7.47571e-01 74 2021 8 3.48110e+00 8.98803e-01 174 2021 9 6.63856e+00 2.06136e+00 137 2021 10 9.09490e+00 4.35620e+00 429 2021 11 1.02690e+01 4.05432e+00 578 2021 12 8.08922e+00 3.47624e+00 560 2022 1 7.80179e+00 3.39286e+00 563 2022 2 4.63990e+00 3.12467e+00 769 2022 3 3.44977e+00 6.61248e-01 107 2022 4 nan nan 0 2022 5 2.74170e+00 1.92921e-01 23 2022 6 2.31290e+00 5.83715e-01 94 2022 7 2.13744e+00 1.18367e+00 75 2022 8 nan nan 0 2022 9 2.68551e+00 2.65836e+00 53 2022 10 1.09758e+01 3.70200e+00 372 2022 11 9.43403e+00 5.08131e+00 430 2022 12 6.26850e+00 5.25867e+00 679 2023 1 8.79105e+00 4.22900e+00 250 2023 2 7.48749e+00 2.68952e+00 437 2023 3 3.52172e+00 2.08116e+00 794 2023 4 3.57814e+00 1.29946e+00 293 2023 5 4.27077e+00 1.27895e+00 183 2023 6 3.24498e+00 7.22019e-01 347 2023 7 3.49673e+00 9.44143e-01 267 2023 8 4.67956e+00 1.34325e+00 161 2023 9 5.10047e+00 2.24939e+00 646 2023 10 8.81872e+00 3.59405e+00 421 2023 11 1.30530e+01 4.92067e+00 516 2023 12 6.06654e+00 4.13549e+00 768 2024 1 4.33557e+00 2.60933e+00 916 2024 2 3.84041e+00 1.99322e+00 954 2024 3 4.33379e+00 2.12858e+00 473 2024 4 1.97974e+00 5.49226e-01 128