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 6.09890e+01 4.45304e-01 48 2002 8 5.94162e+01 5.88754e-01 52 2002 9 5.58162e+01 5.05787e-01 121 2002 10 5.09399e+01 1.92976e+00 277 2002 11 4.36624e+01 1.03021e+00 268 2002 12 4.02961e+01 2.43361e-01 421 2003 1 4.21760e+01 1.26708e+00 521 2003 2 4.62155e+01 9.01018e-01 133 2003 3 5.59255e+01 1.33485e+00 162 2003 4 5.93929e+01 9.26975e-01 101 2003 5 6.15411e+01 3.64941e-01 34 2003 6 nan nan 0 2003 7 nan nan 0 2003 8 6.03869e+01 4.59922e-01 132 2003 9 5.52658e+01 1.56885e+00 148 2003 10 4.98448e+01 2.18336e+00 169 2003 11 4.39836e+01 1.99136e+00 211 2003 12 4.04511e+01 5.49996e-01 378 2004 1 4.16932e+01 1.54781e+00 654 2004 2 4.81235e+01 1.98048e+00 510 2004 3 5.57669e+01 1.69721e+00 203 2004 4 5.97808e+01 1.08555e+00 302 2004 5 6.15057e+01 4.23234e-01 100 2004 6 6.16241e+01 2.31864e-01 85 2004 7 6.06893e+01 3.06315e-01 64 2004 8 6.01140e+01 2.78019e-01 22 2004 9 5.38867e+01 7.05746e-01 55 2004 10 5.07792e+01 1.01181e+00 301 2004 11 4.35444e+01 1.97829e+00 268 2004 12 4.04726e+01 4.54501e-01 573 2005 1 4.25641e+01 1.58756e+00 382 2005 2 4.76725e+01 1.95209e+00 525 2005 3 5.48176e+01 1.10542e+00 371 2005 4 5.90090e+01 1.42931e+00 45 2005 5 6.11786e+01 4.90854e-01 61 2005 6 6.15691e+01 4.47770e-02 68 2005 7 6.11662e+01 2.16640e-01 121 2005 8 6.03593e+01 2.11932e-01 43 2005 9 5.53135e+01 8.55348e-01 132 2005 10 5.18991e+01 1.09233e+00 36 2005 11 4.38628e+01 1.41577e+00 680 2005 12 4.05672e+01 5.01501e-01 531 2006 1 4.21443e+01 1.59986e+00 528 2006 2 4.96976e+01 1.46438e+00 418 2006 3 5.46450e+01 1.81362e+00 277 2006 4 6.03888e+01 8.55662e-01 178 2006 5 6.14997e+01 4.27355e-01 130 2006 6 nan nan 0 2006 7 6.11014e+01 2.99927e-01 201 2006 8 5.94720e+01 7.20244e-01 128 2006 9 5.55736e+01 1.02559e+00 243 2006 10 5.16177e+01 2.26393e+00 172 2006 11 4.42838e+01 1.66958e+00 356 2006 12 4.02983e+01 3.99751e-01 596 2007 1 4.16488e+01 1.28668e+00 629 2007 2 4.78188e+01 1.73231e+00 446 2007 3 5.53476e+01 1.08771e+00 42 2007 4 5.95404e+01 1.01372e+00 206 2007 5 6.13289e+01 3.38350e-01 64 2007 6 nan nan 0 2007 7 6.12933e+01 2.46154e-01 48 2007 8 6.04827e+01 5.72458e-01 77 2007 9 5.68020e+01 8.72692e-01 121 2007 10 4.91105e+01 7.09832e-01 83 2007 11 4.34424e+01 1.32210e+00 383 2007 12 4.02207e+01 3.40762e-01 483 2008 1 4.17906e+01 1.68456e+00 609 2008 2 4.72238e+01 1.55603e+00 403 2008 3 5.51817e+01 2.02852e+00 445 2008 4 6.03274e+01 1.04525e+00 14 2008 5 6.14938e+01 3.42965e-01 115 2008 6 6.16732e+01 4.02422e-02 64 2008 7 6.12184e+01 3.04214e-01 128 2008 8 6.01277e+01 5.07512e-01 226 2008 9 5.68031e+01 1.20214e+00 128 2008 10 4.96090e+01 2.14068e+00 205 2008 11 4.31956e+01 1.53796e+00 476 2008 12 4.04001e+01 3.51207e-01 542 2009 1 4.19349e+01 1.89321e+00 487 2009 2 4.83120e+01 1.59801e+00 377 2009 3 5.69367e+01 6.20576e-01 183 2009 4 5.97202e+01 7.30916e-01 230 2009 5 6.14049e+01 5.45512e-01 153 2009 6 nan nan 0 2009 7 6.12682e+01 2.49823e-01 104 2009 8 6.04016e+01 4.67958e-01 129 2009 9 5.44869e+01 1.11494e+00 33 2009 10 4.92510e+01 2.16748e+00 384 2009 11 4.37389e+01 1.15962e+00 369 2009 12 4.02138e+01 3.28353e-01 426 2010 1 4.19288e+01 1.73755e+00 457 2010 2 4.77083e+01 1.21751e+00 397 2010 3 5.59970e+01 7.22069e-01 193 2010 4 5.86911e+01 7.24026e-01 97 2010 5 6.12442e+01 3.16552e-01 127 2010 6 6.14524e+01 7.85475e-02 190 2010 7 6.08035e+01 3.21454e-01 64 2010 8 5.99459e+01 4.12631e-01 62 2010 9 5.66856e+01 1.38801e+00 325 2010 10 4.89153e+01 9.29844e-01 290 2010 11 4.28685e+01 7.65265e-01 392 2010 12 4.10576e+01 3.81560e-01 298 2011 1 4.18667e+01 1.21625e+00 512 2011 2 4.82198e+01 1.84922e+00 543 2011 3 5.42097e+01 5.90604e-01 316 2011 4 5.98510e+01 8.81181e-01 414 2011 5 6.13567e+01 3.83940e-01 159 2011 6 6.15640e+01 0.00000e+00 2 2011 7 6.05926e+01 4.97035e-01 42 2011 8 5.90140e+01 0.00000e+00 1 2011 9 5.78941e+01 8.06586e-01 75 2011 10 4.93457e+01 1.18562e+00 280 2011 11 4.40683e+01 4.98533e-01 229 2011 12 4.04772e+01 4.06784e-01 633 2012 1 4.21188e+01 1.02871e+00 420 2012 2 4.93948e+01 1.83503e+00 516 2012 3 5.40385e+01 9.75424e-01 130 2012 4 5.96175e+01 8.08450e-01 221 2012 5 nan nan 0 2012 6 6.16031e+01 4.12974e-02 34 2012 7 6.06939e+01 4.45853e-01 34 2012 8 5.97226e+01 9.58647e-01 182 2012 9 5.63975e+01 1.33789e+00 153 2012 10 4.88976e+01 1.67882e+00 88 2012 11 4.34805e+01 1.79983e+00 369 2012 12 4.04461e+01 3.54352e-01 542 2013 1 4.08480e+01 6.50047e-01 384 2013 2 4.78214e+01 2.28319e+00 455 2013 3 5.48878e+01 2.40823e+00 210 2013 4 6.00288e+01 8.40213e-01 212 2013 5 6.13152e+01 3.87704e-01 71 2013 6 nan nan 0 2013 7 6.09773e+01 3.99233e-01 193 2013 8 5.95984e+01 4.72109e-01 37 2013 9 5.46482e+01 8.08229e-01 80 2013 10 5.29922e+01 6.88924e-01 143 2013 11 4.39891e+01 9.22854e-01 347 2013 12 4.03134e+01 4.14262e-01 520 2014 1 4.16084e+01 1.70276e+00 662 2014 2 4.72515e+01 1.96044e+00 201 2014 3 5.60647e+01 2.05652e+00 262 2014 4 6.02330e+01 7.39561e-01 74 2014 5 6.13613e+01 3.83060e-01 183 2014 6 6.15115e+01 7.05796e-02 86 2014 7 6.14323e+01 7.21208e-04 13 2014 8 6.00143e+01 8.36801e-01 187 2014 9 5.50744e+01 1.45739e+00 11 2014 10 4.87389e+01 1.84115e+00 226 2014 11 4.39270e+01 1.84554e+00 389 2014 12 4.03103e+01 3.78883e-01 418 2015 1 4.21434e+01 1.83902e+00 540 2015 2 4.77348e+01 1.73783e+00 386 2015 3 5.56335e+01 1.74306e+00 419 2015 4 5.97064e+01 6.93604e-01 153 2015 5 6.14647e+01 3.84174e-01 75 2015 6 nan nan 0 2015 7 6.09378e+01 2.82063e-01 60 2015 8 6.00862e+01 4.88074e-01 192 2015 9 5.56650e+01 1.63235e+00 231 2015 10 4.98690e+01 9.55195e-01 305 2015 11 4.33089e+01 7.92293e-01 185 2015 12 4.02239e+01 3.49437e-01 329 2016 1 4.10481e+01 9.62062e-01 313 2016 2 4.80386e+01 2.71053e+00 183 2016 3 5.56741e+01 1.73853e+00 270 2016 4 5.98200e+01 9.05219e-01 149 2016 5 nan nan 0 2016 6 6.16254e+01 2.06308e-02 10 2016 7 6.13302e+01 3.25540e-01 128 2016 8 5.99812e+01 4.66655e-01 104 2016 9 5.56224e+01 1.00425e+00 149 2016 10 4.95822e+01 2.28141e+00 244 2016 11 4.42359e+01 2.22187e+00 215 2016 12 4.03601e+01 3.56925e-01 145 2017 1 4.16901e+01 1.14027e+00 486 2017 2 4.79786e+01 1.87145e+00 486 2017 3 5.38824e+01 1.66215e+00 194 2017 4 5.92107e+01 1.04924e+00 188 2017 5 6.13762e+01 2.29831e-03 36 2017 6 6.14651e+01 5.89668e-02 95 2017 7 6.12384e+01 3.31004e-01 140 2017 8 5.95549e+01 7.53563e-01 123 2017 9 5.71371e+01 1.19757e+00 86 2017 10 4.99872e+01 1.00217e+00 132 2017 11 4.41974e+01 1.50512e+00 192 2017 12 4.03252e+01 4.25544e-01 423 2018 1 4.20719e+01 1.83201e+00 531 2018 2 4.91093e+01 1.86279e+00 324 2018 3 5.68637e+01 1.37130e+00 315 2018 4 5.93221e+01 6.47457e-01 137 2018 5 6.11974e+01 4.88471e-01 110 2018 6 6.15242e+01 1.77067e-01 111 2018 7 6.11002e+01 2.87678e-01 86 2018 8 6.00769e+01 3.08185e-01 93 2018 9 5.74085e+01 8.96084e-01 51 2018 10 4.88506e+01 1.80739e+00 349 2018 11 4.27334e+01 8.44674e-01 516 2018 12 4.04714e+01 3.04479e-01 249 2019 1 4.25477e+01 9.43192e-01 401 2019 2 4.73076e+01 1.56801e+00 208 2019 3 5.48086e+01 1.03097e+00 230 2019 4 5.99228e+01 9.27448e-01 221 2019 5 nan nan 0 2019 6 6.15135e+01 4.82707e-02 101 2019 7 6.13361e+01 6.64163e-03 34 2019 8 5.95327e+01 6.15195e-01 69 2019 9 5.67890e+01 1.67244e+00 192 2019 10 5.02908e+01 2.41506e+00 419 2019 11 4.36133e+01 1.47063e+00 310 2019 12 4.04324e+01 3.63797e-01 294 2020 1 4.25849e+01 1.57289e+00 282 2020 2 4.81230e+01 1.77096e+00 279 2020 3 5.52486e+01 2.44978e+00 338 2020 4 5.95962e+01 1.00104e+00 373 2020 5 6.15342e+01 3.43668e-01 128 2020 6 6.15401e+01 1.03510e-01 167 2020 7 6.11490e+01 2.62844e-01 125 2020 8 5.96191e+01 7.49048e-01 150 2020 9 5.55749e+01 1.38749e+00 171 2020 10 4.92941e+01 4.78247e-01 258 2020 11 4.38713e+01 1.80265e+00 525 2020 12 4.04091e+01 4.49674e-01 576 2021 1 4.12169e+01 1.18206e+00 473 2021 2 4.93744e+01 1.96768e+00 489 2021 3 5.48286e+01 1.31839e+00 410 2021 4 5.98166e+01 9.49560e-01 337 2021 5 6.10665e+01 6.67346e-01 84 2021 6 6.15099e+01 3.39999e-02 30 2021 7 6.10592e+01 3.49043e-01 128 2021 8 6.05259e+01 4.12380e-01 125 2021 9 5.52889e+01 1.43640e+00 242 2021 10 5.04452e+01 1.81948e+00 363 2021 11 4.27818e+01 1.35486e+00 454 2021 12 4.04585e+01 2.98554e-01 333 2022 1 4.20439e+01 1.32156e+00 658 2022 2 4.91034e+01 1.53367e+00 386 2022 3 5.58301e+01 9.56764e-01 90 2022 4 6.07961e+01 5.17687e-01 79 2022 5 6.11599e+01 3.75717e-01 131 2022 6 6.15324e+01 4.82032e-02 79 2022 7 6.09521e+01 3.56970e-01 28 2022 8 5.93352e+01 5.53515e-01 70 2022 9 5.63521e+01 1.94420e+00 129 2022 10 4.87181e+01 6.80170e-01 191 2022 11 4.36590e+01 1.59999e+00 697 2022 12 4.03685e+01 4.14960e-01 704 2023 1 4.15091e+01 1.30384e+00 592 2023 2 4.91544e+01 2.07546e+00 527 2023 3 5.50809e+01 2.24481e+00 561 2023 4 5.99872e+01 1.00473e+00 388 2023 5 6.12381e+01 4.76083e-01 273 2023 6 6.15288e+01 6.56931e-02 128 2023 7 nan nan 0 2023 8 5.98586e+01 7.36919e-01 128 2023 9 5.62136e+01 1.54128e+00 191 2023 10 5.03400e+01 1.40224e+00 299 2023 11 4.39647e+01 1.79030e+00 456 2023 12 4.04050e+01 4.93688e-01 549 2024 1 4.26425e+01 1.07488e+00 490 2024 2 4.84915e+01 1.14456e+00 466 2024 3 5.67043e+01 1.27353e+00 276 2024 4 5.85618e+01 4.20902e-01 119