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 3.50197e+01 5.15433e+00 82 2002 8 3.66150e+01 4.42009e+00 48 2002 9 2.91169e+01 5.29392e+00 125 2002 10 2.54036e+01 8.01924e+00 215 2002 11 2.94682e+01 6.15200e+00 542 2002 12 3.24855e+01 5.32081e+00 523 2003 1 3.40296e+01 4.55519e+00 472 2003 2 3.16804e+01 6.25374e+00 356 2003 3 3.30916e+01 8.01076e+00 250 2003 4 2.62352e+01 7.86730e+00 81 2003 5 3.62122e+01 6.29077e+00 93 2003 6 3.22263e+01 4.39081e+00 53 2003 7 2.80895e+01 6.87048e+00 63 2003 8 3.23069e+01 2.59292e+00 34 2003 9 2.62704e+01 6.23777e+00 204 2003 10 3.28466e+01 7.28962e+00 293 2003 11 1.53985e+01 5.37107e+00 146 2003 12 2.74512e+01 5.99895e+00 501 2004 1 3.40696e+01 5.88955e+00 527 2004 2 3.09021e+01 7.66229e+00 375 2004 3 3.29114e+01 5.04627e+00 379 2004 4 3.30541e+01 5.63847e+00 161 2004 5 3.20924e+01 5.22102e-01 3 2004 6 3.49284e+01 7.71106e+00 102 2004 7 3.49921e+01 4.60235e+00 45 2004 8 3.06787e+01 3.61908e+00 153 2004 9 2.88808e+01 1.05890e+01 101 2004 10 3.46573e+01 4.22592e+00 114 2004 11 3.17281e+01 7.42768e+00 295 2004 12 3.38164e+01 5.65728e+00 389 2005 1 3.02584e+01 5.38555e+00 355 2005 2 3.34069e+01 3.68907e+00 354 2005 3 3.05113e+01 7.74257e+00 192 2005 4 3.09646e+01 5.27031e+00 298 2005 5 3.05359e+01 1.10180e+01 105 2005 6 4.24473e+01 0.00000e+00 1 2005 7 3.15138e+01 2.08583e+00 24 2005 8 3.90170e+01 1.90160e+00 8 2005 9 3.37906e+01 3.83467e+00 105 2005 10 1.91481e+01 6.07976e+00 109 2005 11 2.18548e+01 8.71763e+00 225 2005 12 3.19184e+01 7.55999e+00 703 2006 1 3.27590e+01 7.99836e+00 192 2006 2 3.15624e+01 1.06569e+01 281 2006 3 3.53427e+01 5.36494e+00 375 2006 4 3.52865e+01 5.08915e+00 200 2006 5 3.28916e+01 6.00964e+00 143 2006 6 nan nan 0 2006 7 3.00776e+01 2.54780e+00 58 2006 8 2.94420e+01 3.36552e+00 55 2006 9 3.00541e+01 6.87778e+00 160 2006 10 3.07512e+01 6.46337e+00 220 2006 11 3.36608e+01 7.05647e+00 488 2006 12 3.18754e+01 5.75755e+00 530 2007 1 3.29195e+01 5.28810e+00 504 2007 2 3.24651e+01 5.63454e+00 242 2007 3 3.36336e+01 6.31480e+00 203 2007 4 3.37682e+01 5.33322e+00 206 2007 5 3.29588e+01 4.05167e+00 105 2007 6 5.13359e+01 2.14854e-01 9 2007 7 3.05849e+01 3.03216e+00 67 2007 8 3.03367e+01 6.88930e+00 93 2007 9 2.02629e+01 7.71882e+00 54 2007 10 3.21216e+01 3.38759e+00 133 2007 11 2.82097e+01 8.56741e+00 162 2007 12 2.71832e+01 9.79028e+00 448 2008 1 3.39950e+01 5.19518e+00 462 2008 2 3.58746e+01 5.77201e+00 231 2008 3 3.48946e+01 7.22215e+00 174 2008 4 3.31958e+01 6.76860e+00 192 2008 5 3.47450e+01 4.58812e+00 121 2008 6 2.99514e+01 4.06998e+00 102 2008 7 3.66494e+01 7.53443e+00 104 2008 8 3.39056e+01 5.07110e+00 137 2008 9 1.61133e+01 2.64929e+00 59 2008 10 2.76764e+01 8.71695e+00 351 2008 11 2.84065e+01 5.87865e+00 268 2008 12 3.09026e+01 9.89832e+00 527 2009 1 3.31436e+01 6.94416e+00 645 2009 2 3.22422e+01 6.26623e+00 384 2009 3 3.46809e+01 5.12179e+00 281 2009 4 3.16466e+01 5.54784e+00 281 2009 5 3.07851e+01 4.88307e+00 137 2009 6 2.81545e+01 7.28066e+00 105 2009 7 3.61595e+01 3.96155e+00 58 2009 8 3.52757e+01 6.08877e+00 136 2009 9 3.17353e+01 2.94376e+00 108 2009 10 3.30211e+01 6.25132e+00 155 2009 11 2.72000e+01 6.04973e+00 539 2009 12 2.86286e+01 8.55476e+00 447 2010 1 3.09668e+01 4.62274e+00 427 2010 2 3.44645e+01 5.38249e+00 370 2010 3 3.51269e+01 7.74280e+00 290 2010 4 3.90385e+01 5.78799e+00 77 2010 5 3.48768e+01 4.65650e+00 181 2010 6 2.77796e+01 4.35703e+00 50 2010 7 3.33118e+01 1.89142e-01 2 2010 8 2.79081e+01 3.16662e+00 146 2010 9 3.07325e+01 3.37810e+00 54 2010 10 2.05725e+01 6.66856e+00 131 2010 11 2.27463e+01 4.66679e+00 191 2010 12 2.56983e+01 6.74347e+00 261 2011 1 3.15641e+01 6.06782e+00 361 2011 2 3.16609e+01 6.85581e+00 465 2011 3 3.26225e+01 5.82632e+00 474 2011 4 3.48446e+01 5.58216e+00 375 2011 5 3.43546e+01 9.45563e+00 88 2011 6 2.83887e+01 3.52488e+00 56 2011 7 3.80271e+01 2.42627e+00 21 2011 8 2.92211e+01 7.32913e+00 42 2011 9 2.64259e+01 4.52823e+00 146 2011 10 3.14491e+01 5.14794e+00 305 2011 11 2.88842e+01 6.06007e+00 348 2011 12 3.15818e+01 5.30940e+00 545 2012 1 3.30960e+01 5.77591e+00 569 2012 2 3.36522e+01 5.97583e+00 414 2012 3 3.70910e+01 4.48468e+00 200 2012 4 3.50724e+01 6.47992e+00 191 2012 5 3.21784e+01 6.61525e+00 64 2012 6 3.47256e+01 7.90146e+00 36 2012 7 3.56213e+01 5.85231e+00 109 2012 8 2.66799e+01 5.06527e+00 51 2012 9 2.27559e+01 7.12180e+00 133 2012 10 3.32864e+01 5.55226e+00 172 2012 11 3.53993e+01 5.98731e+00 473 2012 12 3.31396e+01 5.51281e+00 399 2013 1 3.20847e+01 7.16824e+00 343 2013 2 3.50640e+01 5.66773e+00 355 2013 3 3.52968e+01 1.04450e+01 266 2013 4 3.50487e+01 4.12701e+00 146 2013 5 3.45723e+01 5.94221e+00 292 2013 6 3.62584e+01 5.00011e+00 31 2013 7 3.42880e+01 6.12359e+00 161 2013 8 2.97273e+01 2.86845e+00 37 2013 9 3.24200e+01 5.35484e+00 129 2013 10 3.00160e+01 6.75179e+00 187 2013 11 3.07137e+01 5.38374e+00 489 2013 12 3.02136e+01 6.86853e+00 562 2014 1 3.19768e+01 5.95735e+00 655 2014 2 3.56037e+01 5.58146e+00 458 2014 3 3.23693e+01 6.65500e+00 342 2014 4 3.22207e+01 8.36962e+00 310 2014 5 3.20923e+01 4.30491e+00 147 2014 6 3.72146e+01 2.70444e+00 33 2014 7 3.55126e+01 4.04489e+00 128 2014 8 nan nan 0 2014 9 3.52744e+01 5.46182e+00 151 2014 10 2.65513e+01 7.96832e+00 252 2014 11 2.71536e+01 7.60870e+00 312 2014 12 2.32771e+01 8.47282e+00 607 2015 1 3.02607e+01 8.27314e+00 511 2015 2 3.33118e+01 5.27558e+00 456 2015 3 3.17198e+01 7.35660e+00 391 2015 4 3.18108e+01 5.75336e+00 265 2015 5 nan nan 0 2015 6 nan nan 0 2015 7 2.75895e+01 8.39078e+00 84 2015 8 3.33212e+01 4.38509e+00 245 2015 9 3.37626e+01 7.61222e+00 321 2015 10 3.39178e+01 6.68312e+00 337 2015 11 3.30188e+01 7.99304e+00 178 2015 12 3.43804e+01 6.08478e+00 420 2016 1 3.24924e+01 5.78880e+00 555 2016 2 3.41072e+01 6.57721e+00 307 2016 3 3.59468e+01 5.81921e+00 225 2016 4 3.73810e+01 6.10887e+00 182 2016 5 3.12079e+01 5.07587e+00 173 2016 6 3.16275e+01 4.46629e+00 120 2016 7 3.53747e+01 3.93880e+00 90 2016 8 2.86183e+01 3.60217e+00 66 2016 9 3.41579e+01 8.14522e+00 308 2016 10 2.39269e+01 7.48660e+00 209 2016 11 2.63264e+01 5.30896e+00 193 2016 12 2.99790e+01 7.02374e+00 477 2017 1 3.41388e+01 6.18795e+00 616 2017 2 3.48171e+01 5.25974e+00 412 2017 3 3.05540e+01 7.07666e+00 172 2017 4 3.43402e+01 5.40185e+00 213 2017 5 3.27924e+01 6.92327e+00 304 2017 6 3.50648e+01 6.15788e+00 132 2017 7 2.62000e+01 5.62780e+00 148 2017 8 2.07444e+01 3.89422e+00 115 2017 9 2.35240e+01 2.51265e+00 49 2017 10 1.24303e+01 7.23354e+00 158 2017 11 2.45755e+01 9.19862e+00 328 2017 12 2.80201e+01 5.14530e+00 409 2018 1 3.71582e+01 5.94522e+00 198 2018 2 3.49650e+01 6.29049e+00 276 2018 3 3.62672e+01 5.24216e+00 329 2018 4 3.37267e+01 5.72407e+00 259 2018 5 3.65611e+01 8.67545e+00 219 2018 6 3.26503e+01 2.20670e+00 91 2018 7 nan nan 0 2018 8 4.46195e+01 1.05187e+01 10 2018 9 3.27976e+01 7.60561e+00 150 2018 10 2.90122e+01 9.05318e+00 245 2018 11 2.51285e+01 5.32580e+00 606 2018 12 2.98343e+01 6.83469e+00 648 2019 1 3.22332e+01 4.22323e+00 457 2019 2 3.57655e+01 4.93617e+00 361 2019 3 3.58466e+01 5.21924e+00 226 2019 4 3.51883e+01 5.67277e+00 220 2019 5 3.72801e+01 5.80921e+00 59 2019 6 3.39777e+01 5.73344e+00 183 2019 7 3.26168e+01 6.87808e+00 149 2019 8 3.46364e+01 6.39796e+00 131 2019 9 3.04219e+01 8.62929e+00 106 2019 10 2.82024e+01 6.35658e+00 267 2019 11 2.78811e+01 7.73076e+00 604 2019 12 2.75012e+01 6.04635e+00 442 2020 1 3.15462e+01 7.44237e+00 343 2020 2 3.49801e+01 5.90610e+00 281 2020 3 3.74712e+01 6.20378e+00 199 2020 4 3.30646e+01 6.51036e+00 417 2020 5 3.43132e+01 5.92578e+00 183 2020 6 3.80245e+01 5.40390e+00 131 2020 7 3.58350e+01 6.82531e+00 47 2020 8 3.08391e+01 6.37276e+00 111 2020 9 3.44733e+01 2.48831e+00 70 2020 10 3.93562e+01 7.01669e+00 77 2020 11 2.81544e+01 4.24615e+00 123 2020 12 3.15692e+01 7.83228e+00 573 2021 1 3.45737e+01 4.70561e+00 785 2021 2 3.48665e+01 9.92973e+00 245 2021 3 3.54008e+01 5.57738e+00 391 2021 4 3.96597e+01 7.80058e+00 203 2021 5 3.46660e+01 4.80024e+00 161 2021 6 4.17713e+01 4.25330e+00 25 2021 7 2.66644e+01 1.08285e+01 67 2021 8 2.90299e+01 7.29939e+00 192 2021 9 3.11147e+01 6.83249e+00 145 2021 10 2.46205e+01 6.57421e+00 325 2021 11 2.89186e+01 5.66124e+00 391 2021 12 2.87951e+01 6.32415e+00 565 2022 1 3.91188e+01 6.19946e+00 605 2022 2 3.84800e+01 7.06578e+00 317 2022 3 3.80273e+01 8.53497e+00 108 2022 4 3.71759e+01 6.54076e+00 101 2022 5 4.01656e+01 6.95350e+00 121 2022 6 4.13017e+01 8.58474e+00 176 2022 7 3.90949e+01 7.55580e+00 98 2022 8 5.46184e+01 0.00000e+00 3 2022 9 5.99230e+01 6.01184e-01 5 2022 10 2.48813e+01 7.51561e+00 182 2022 11 2.41063e+01 6.11863e+00 506 2022 12 3.12232e+01 7.89716e+00 666 2023 1 3.58431e+01 8.12642e+00 861 2023 2 3.99541e+01 1.17296e+01 552 2023 3 3.41997e+01 1.15581e+01 400 2023 4 3.87660e+01 7.85374e+00 340 2023 5 3.89551e+01 5.28703e+00 347 2023 6 3.71661e+01 8.74921e+00 225 2023 7 3.95027e+01 0.00000e+00 2 2023 8 3.62557e+01 7.63642e+00 118 2023 9 3.25173e+01 1.02137e+01 231 2023 10 3.53736e+01 9.31227e+00 191 2023 11 3.25949e+01 1.10018e+01 626 2023 12 3.15110e+01 8.61285e+00 538 2024 1 3.29390e+01 7.54989e+00 600 2024 2 3.67000e+01 6.19560e+00 458 2024 3 3.80378e+01 7.55604e+00 387 2024 4 4.16385e+01 7.44234e+00 56