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 4.91469e+00 4.03672e+00 147 2002 8 1.04715e+01 7.47939e+00 141 2002 9 5.32599e+00 2.36369e+00 98 2002 10 5.69573e+00 4.15426e+00 464 2002 11 6.65668e+00 1.76070e+00 365 2002 12 5.71023e+00 2.31721e+00 368 2003 1 8.18311e+00 4.49145e+00 540 2003 2 5.23725e+00 1.29358e+00 458 2003 3 1.55960e+01 8.13864e+00 127 2003 4 2.00818e+01 9.06196e+00 188 2003 5 1.66464e+01 9.38739e+00 46 2003 6 2.00241e+01 1.28194e+01 15 2003 7 9.64935e+00 6.70136e+00 47 2003 8 2.40648e+01 8.37857e+00 28 2003 9 1.27506e+01 7.19550e+00 203 2003 10 8.80380e+00 4.97478e+00 268 2003 11 7.49951e+00 4.54496e+00 471 2003 12 4.48288e+00 1.09145e+00 445 2004 1 4.23291e+00 1.20105e+00 331 2004 2 3.67172e+00 1.19888e+00 242 2004 3 6.62419e+00 2.42688e+00 522 2004 4 3.55811e+00 1.06337e+00 238 2004 5 4.89319e+00 1.54520e+00 158 2004 6 5.12294e+00 4.94469e+00 141 2004 7 4.48442e+00 5.74869e+00 122 2004 8 1.01781e+01 7.29536e+00 179 2004 9 6.54420e+00 1.85986e+00 123 2004 10 2.33227e+01 6.27757e+00 24 2004 11 3.06155e+01 1.10648e+01 33 2004 12 8.76112e+00 2.44929e+00 124 2005 1 8.27564e+00 2.45625e+00 351 2005 2 9.34681e+00 3.11406e+00 276 2005 3 6.62573e+00 3.22100e+00 294 2005 4 9.66615e+00 4.38245e+00 266 2005 5 1.34381e+01 6.81518e+00 112 2005 6 7.24713e+00 4.92730e+00 62 2005 7 nan nan 0 2005 8 1.73424e+01 8.77090e+00 62 2005 9 1.22034e+01 7.47953e+00 152 2005 10 8.77582e+00 3.85794e+00 371 2005 11 5.55610e+00 2.27051e+00 436 2005 12 4.76243e+00 1.94980e+00 404 2006 1 8.53906e+00 2.71259e+00 390 2006 2 1.03951e+01 3.95683e+00 393 2006 3 1.49015e+01 9.89996e+00 627 2006 4 5.34688e+00 1.70872e+00 221 2006 5 2.87297e+00 7.26785e-01 109 2006 6 3.40645e+00 6.68501e-01 61 2006 7 6.93018e+00 2.26038e+00 39 2006 8 7.37131e+00 2.73155e+00 73 2006 9 7.32061e+00 2.83665e+00 138 2006 10 7.26279e+00 2.76946e+00 173 2006 11 5.20528e+00 2.21844e+00 317 2006 12 4.41503e+00 2.43129e+00 272 2007 1 5.08396e+00 1.96801e+00 165 2007 2 3.47777e+00 7.73993e-01 392 2007 3 3.54873e+00 9.40643e-01 602 2007 4 3.92191e+00 8.53605e-01 303 2007 5 3.71124e+00 4.94277e-01 53 2007 6 4.88741e+00 2.85551e+00 133 2007 7 7.44437e+00 9.05741e+00 40 2007 8 8.27318e+00 2.73169e+00 122 2007 9 7.59561e+00 1.60504e+00 127 2007 10 7.04471e+00 3.79394e+00 359 2007 11 7.34800e+00 3.51473e+00 490 2007 12 7.28031e+00 4.61935e+00 282 2008 1 6.19489e+00 2.46635e+00 263 2008 2 4.62091e+00 1.95645e+00 562 2008 3 8.11814e+00 4.67507e+00 401 2008 4 1.58760e+01 8.20539e+00 248 2008 5 6.76678e+00 3.17183e+00 179 2008 6 5.55482e+00 1.77154e+00 126 2008 7 7.40691e+00 3.75718e+00 44 2008 8 5.73574e+00 4.06594e+00 84 2008 9 1.39826e+01 6.79101e+00 88 2008 10 1.01644e+01 5.21599e+00 491 2008 11 6.39476e+00 2.65542e+00 477 2008 12 6.00341e+00 2.45181e+00 498 2009 1 5.65166e+00 2.50751e+00 410 2009 2 4.09629e+00 1.11963e+00 594 2009 3 3.64321e+00 7.29910e-01 454 2009 4 7.79731e+00 4.69238e+00 342 2009 5 2.56229e+01 9.91800e+00 52 2009 6 6.79716e+00 3.41498e+00 73 2009 7 3.19746e+00 4.68832e-01 9 2009 8 1.08289e+01 3.14940e+00 89 2009 9 1.36776e+01 5.36766e+00 264 2009 10 8.54790e+00 4.40142e+00 464 2009 11 6.42736e+00 3.16033e+00 279 2009 12 4.94844e+00 1.96868e+00 152 2010 1 4.71330e+00 1.52395e+00 527 2010 2 1.41411e+01 5.31705e+00 343 2010 3 1.99013e+01 9.41073e+00 556 2010 4 1.12091e+01 4.74143e+00 307 2010 5 7.56538e+00 4.02252e+00 295 2010 6 7.45548e+00 2.49777e+00 114 2010 7 1.03558e+01 5.42578e+00 133 2010 8 5.38211e+00 1.12360e+00 31 2010 9 1.30445e+01 7.22308e+00 265 2010 10 6.42050e+00 4.09008e+00 798 2010 11 4.13324e+00 1.97651e+00 581 2010 12 3.64015e+00 1.12001e+00 386 2011 1 3.38654e+00 1.21696e+00 426 2011 2 3.31221e+00 9.19401e-01 604 2011 3 4.00129e+00 1.21330e+00 704 2011 4 3.54941e+00 8.00290e-01 500 2011 5 3.56427e+00 1.02603e+00 271 2011 6 7.65911e+00 0.00000e+00 1 2011 7 5.86259e+00 4.10542e+00 83 2011 8 5.53878e+00 1.48344e+00 18 2011 9 6.77458e+00 3.21688e+00 485 2011 10 6.11881e+00 3.03700e+00 367 2011 11 4.41716e+00 1.75923e+00 670 2011 12 4.03019e+00 1.11906e+00 585 2012 1 3.83908e+00 1.56381e+00 636 2012 2 5.01799e+00 1.42909e+00 20 2012 3 3.10711e+00 6.82609e-01 560 2012 4 3.79363e+00 9.16608e-01 413 2012 5 3.92120e+00 8.33482e-01 218 2012 6 2.60741e+00 1.50712e+00 14 2012 7 1.03695e+01 6.76912e+00 55 2012 8 1.91601e+01 1.64755e+01 8 2012 9 1.73498e+01 8.91698e+00 85 2012 10 1.67810e+01 5.96759e+00 146 2012 11 8.47271e+00 4.07607e+00 458 2012 12 6.70856e+00 1.93223e+00 201 2013 1 5.03928e+00 2.09395e+00 474 2013 2 3.94226e+00 1.13058e+00 322 2013 3 4.53054e+00 1.62469e+00 446 2013 4 1.16625e+01 8.81505e+00 226 2013 5 6.72402e+00 3.48795e+00 207 2013 6 2.13068e+01 1.21964e+01 124 2013 7 nan nan 0 2013 8 3.94645e+01 8.06613e+00 11 2013 9 1.99783e+01 9.16183e+00 220 2013 10 1.21890e+01 6.23501e+00 367 2013 11 9.01063e+00 4.07507e+00 84 2013 12 5.98332e+00 1.68029e+00 322 2014 1 5.66601e+00 1.56402e+00 268 2014 2 5.35208e+00 1.18922e+00 519 2014 3 9.33239e+00 4.56890e+00 365 2014 4 1.80491e+01 1.18526e+01 194 2014 5 2.17264e+01 9.50038e+00 101 2014 6 1.23966e+01 1.85231e+00 30 2014 7 1.13373e+01 4.42041e+00 269 2014 8 1.07064e+01 5.04596e+00 140 2014 9 4.69344e+00 5.73540e-01 21 2014 10 7.29621e+00 3.25028e+00 855 2014 11 6.29727e+00 2.05701e+00 486 2014 12 4.94062e+00 1.99094e+00 309 2015 1 4.51450e+00 2.96421e+00 405 2015 2 4.88806e+00 1.26089e+00 480 2015 3 8.08558e+00 2.16707e+00 303 2015 4 1.51881e+01 7.93542e+00 87 2015 5 6.70993e+00 2.35335e+00 252 2015 6 5.94120e+00 1.63720e+00 111 2015 7 2.22127e+00 7.77918e-03 3 2015 8 1.87950e+01 1.17222e+01 63 2015 9 1.06281e+01 3.80810e+00 64 2015 10 7.51993e+00 4.43759e+00 359 2015 11 7.41719e+00 3.46629e+00 270 2015 12 6.35705e+00 3.15447e+00 311 2016 1 4.94464e+00 1.72110e+00 407 2016 2 6.33355e+00 5.96745e+00 699 2016 3 6.52558e+00 3.47505e+00 475 2016 4 7.43819e+00 2.06253e+00 201 2016 5 5.62344e+00 2.59581e+00 161 2016 6 5.40027e+00 3.20102e+00 189 2016 7 9.26497e+00 7.02007e+00 168 2016 8 1.72536e+01 9.01791e+00 246 2016 9 1.10050e+01 7.69797e+00 148 2016 10 8.95897e+00 4.74886e+00 407 2016 11 5.88894e+00 2.63392e+00 593 2016 12 5.36911e+00 2.46794e+00 331 2017 1 4.35899e+00 1.84767e+00 460 2017 2 4.73561e+00 2.29735e+00 545 2017 3 5.69187e+00 1.78319e+00 579 2017 4 4.23868e+00 1.04263e+00 383 2017 5 3.32362e+00 1.11212e+00 200 2017 6 3.10843e+00 1.69622e+00 85 2017 7 5.52717e+00 1.52628e+00 79 2017 8 1.10236e+01 5.08337e+00 218 2017 9 1.24492e+01 6.67582e+00 397 2017 10 1.39671e+01 1.06097e+01 80 2017 11 1.03716e+01 5.47244e+00 751 2017 12 4.81866e+00 1.85264e+00 421 2018 1 5.22902e+00 1.98846e+00 283 2018 2 6.73453e+00 3.25252e+00 470 2018 3 5.76130e+00 2.49521e+00 496 2018 4 5.38757e+00 1.72758e+00 258 2018 5 8.26600e+00 4.59600e+00 287 2018 6 6.12337e+00 2.85421e+00 206 2018 7 nan nan 0 2018 8 3.45892e+01 9.79851e+00 8 2018 9 1.44147e+01 8.34020e+00 372 2018 10 9.57298e+00 4.13841e+00 440 2018 11 6.29666e+00 1.63756e+00 64 2018 12 9.28082e+00 3.14360e+00 356 2019 1 2.09488e+01 9.77901e+00 158 2019 2 2.81479e+01 9.84499e+00 102 2019 3 1.40737e+01 8.01733e+00 466 2019 4 8.59747e+00 2.54407e+00 310 2019 5 7.62147e+00 2.21469e+00 294 2019 6 nan nan 0 2019 7 7.02585e+00 1.08977e+00 30 2019 8 1.08101e+01 5.47063e+00 123 2019 9 8.74656e+00 2.32578e+00 154 2019 10 7.84814e+00 2.36064e+00 360 2019 11 5.15478e+00 2.47989e+00 528 2019 12 5.48808e+00 1.61725e+00 130 2020 1 6.03230e+00 1.77512e+00 305 2020 2 6.48556e+00 2.90637e+00 306 2020 3 7.11541e+00 2.62111e+00 564 2020 4 6.46332e+00 3.19044e+00 188 2020 5 7.36420e+00 5.67972e+00 430 2020 6 1.01380e+01 6.17545e+00 311 2020 7 8.17804e+00 4.97728e+00 79 2020 8 1.02080e+01 2.47229e+00 142 2020 9 1.30889e+01 4.68615e+00 151 2020 10 1.01888e+01 5.69534e+00 386 2020 11 8.19313e+00 4.45137e+00 332 2020 12 4.99275e+00 2.09788e+00 427 2021 1 6.39846e+00 2.44010e+00 161 2021 2 9.41799e+00 3.22749e+00 301 2021 3 8.86096e+00 2.93115e+00 343 2021 4 1.36158e+01 5.08053e+00 331 2021 5 1.14833e+01 3.83615e+00 271 2021 6 9.33052e+00 2.37309e+00 37 2021 7 1.43354e+01 4.15286e+00 55 2021 8 1.57069e+01 2.42294e+00 18 2021 9 2.49638e+01 9.24873e+00 218 2021 10 1.17055e+01 6.58523e+00 267 2021 11 7.87050e+00 2.27589e+00 553 2021 12 8.15080e+00 3.17554e+00 499 2022 1 7.27012e+00 1.53670e+00 372 2022 2 6.50769e+00 1.85530e+00 540 2022 3 7.56557e+00 3.64381e+00 432 2022 4 3.13013e+01 1.03657e+01 35 2022 5 1.78550e+01 9.98453e+00 282 2022 6 1.03623e+01 2.55859e+00 202 2022 7 1.03579e+01 3.12637e+00 124 2022 8 1.21273e+01 4.42700e+00 165 2022 9 1.11953e+01 6.87735e+00 243 2022 10 5.33548e+00 2.94161e+00 965 2022 11 7.44511e+00 4.66684e+00 296 2022 12 6.39873e+00 4.39418e+00 662 2023 1 5.43511e+00 2.10723e+00 754 2023 2 7.21514e+00 4.13486e+00 526 2023 3 1.29561e+01 7.17805e+00 518 2023 4 9.35983e+00 4.01402e+00 400 2023 5 9.88006e+00 8.99600e+00 244 2023 6 2.81902e+00 2.10857e+00 75 2023 7 9.88456e+00 5.89323e+00 344 2023 8 1.15146e+01 8.78054e+00 209 2023 9 1.36886e+01 7.70468e+00 371 2023 10 7.29292e+00 2.72188e+00 360 2023 11 8.31659e+00 4.43592e+00 528 2023 12 8.73153e+00 4.56745e+00 179 2024 1 1.71682e+01 8.51023e+00 269 2024 2 1.53284e+01 7.50948e+00 657 2024 3 1.27750e+01 3.66903e+00 318 2024 4 nan nan 0