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 6.20607e+01 4.41750e-01 288 2002 8 5.76716e+01 8.26658e-01 136 2002 9 5.25030e+01 1.52894e+00 422 2002 10 4.49065e+01 2.29900e+00 835 2002 11 3.89905e+01 1.74094e+00 362 2002 12 3.26866e+01 6.32631e-01 417 2003 1 3.48112e+01 5.28487e-01 151 2003 2 4.05165e+01 1.88090e+00 307 2003 3 5.13168e+01 2.53694e+00 246 2003 4 5.94361e+01 2.24624e-01 128 2003 5 6.06385e+01 8.86945e-02 4 2003 6 6.23707e+01 2.10476e-01 57 2003 7 6.11776e+01 1.21070e-01 5 2003 8 5.88096e+01 5.38005e-01 203 2003 9 5.33745e+01 2.38120e+00 192 2003 10 4.52456e+01 2.49600e+00 935 2003 11 3.74943e+01 1.40716e+00 623 2003 12 3.38213e+01 5.97378e-01 303 2004 1 3.53433e+01 1.19977e+00 746 2004 2 4.06415e+01 1.57551e+00 384 2004 3 5.53332e+01 6.37261e-01 128 2004 4 nan nan 0 2004 5 6.19536e+01 9.45031e-01 120 2004 6 6.20400e+01 6.28774e-01 124 2004 7 6.21380e+01 4.67915e-01 253 2004 8 5.78481e+01 1.30019e+00 392 2004 9 nan nan 0 2004 10 4.34935e+01 1.94633e+00 754 2004 11 3.74988e+01 2.02411e+00 837 2004 12 3.32907e+01 1.00073e+00 579 2005 1 3.59239e+01 1.67755e+00 922 2005 2 4.11735e+01 1.81479e+00 314 2005 3 5.14763e+01 1.28183e+00 121 2005 4 nan nan 0 2005 5 5.95853e+01 1.28871e-01 14 2005 6 6.22860e+01 3.84459e-01 302 2005 7 6.26195e+01 4.24962e-01 170 2005 8 5.89601e+01 1.41165e+00 289 2005 9 5.43156e+01 5.40103e-01 28 2005 10 4.64390e+01 1.44658e-01 23 2005 11 3.61696e+01 1.53224e+00 214 2005 12 3.25161e+01 7.83663e-01 448 2006 1 3.50361e+01 1.73796e+00 129 2006 2 4.45983e+01 5.15278e-01 129 2006 3 5.26073e+01 4.94604e-02 3 2006 4 nan nan 0 2006 5 nan nan 0 2006 6 6.15096e+01 4.69664e-01 120 2006 7 6.11238e+01 6.42325e-01 105 2006 8 5.87306e+01 1.32002e+00 166 2006 9 5.13606e+01 1.19226e+00 263 2006 10 4.41631e+01 1.93115e+00 716 2006 11 3.69790e+01 1.75651e+00 630 2006 12 3.38084e+01 4.10833e-01 397 2007 1 3.63392e+01 1.48747e+00 779 2007 2 4.39769e+01 2.04551e+00 373 2007 3 4.97972e+01 2.11290e+00 285 2007 4 5.77658e+01 1.99632e+00 154 2007 5 6.06194e+01 4.81334e-01 41 2007 6 6.19051e+01 7.39264e-01 434 2007 7 6.13473e+01 5.99626e-01 306 2007 8 5.90079e+01 1.63213e+00 440 2007 9 5.37297e+01 2.08032e+00 500 2007 10 4.56113e+01 1.51541e+00 705 2007 11 3.79961e+01 1.54463e+00 1088 2007 12 3.39172e+01 6.84662e-01 1099 2008 1 3.59803e+01 1.72309e+00 570 2008 2 4.11197e+01 1.37773e+00 494 2008 3 4.73806e+01 2.38779e-01 118 2008 4 5.78972e+01 3.64054e-01 131 2008 5 6.16184e+01 7.21627e-01 185 2008 6 6.25237e+01 2.02821e-01 254 2008 7 6.18745e+01 4.28235e-01 133 2008 8 5.89519e+01 1.56108e+00 192 2008 9 5.37530e+01 2.33053e+00 129 2008 10 4.49269e+01 1.73787e+00 293 2008 11 3.73699e+01 1.91182e+00 709 2008 12 3.36407e+01 4.42900e-01 839 2009 1 3.61554e+01 1.96371e+00 565 2009 2 4.31892e+01 1.06620e+00 322 2009 3 5.17768e+01 1.56413e-01 69 2009 4 5.88569e+01 1.71988e+00 256 2009 5 6.18034e+01 6.29156e-01 516 2009 6 6.23040e+01 5.71010e-01 196 2009 7 6.16405e+01 4.55424e-01 362 2009 8 5.79145e+01 2.03484e+00 105 2009 9 5.30244e+01 2.10160e+00 402 2009 10 4.47138e+01 2.55108e+00 785 2009 11 3.70463e+01 1.82198e+00 673 2009 12 3.35291e+01 6.70394e-01 575 2010 1 3.60958e+01 1.70415e+00 385 2010 2 4.00151e+01 8.54383e-01 129 2010 3 nan nan 0 2010 4 nan nan 0 2010 5 6.13887e+01 8.00639e-01 383 2010 6 6.22437e+01 5.08111e-01 218 2010 7 6.20924e+01 6.70444e-01 447 2010 8 5.93068e+01 1.37187e+00 374 2010 9 5.44653e+01 1.40092e+00 632 2010 10 4.48465e+01 2.79888e+00 809 2010 11 3.72491e+01 1.68197e+00 604 2010 12 3.24376e+01 8.23026e-01 406 2011 1 3.31341e+01 6.55009e-01 316 2011 2 4.24340e+01 2.85587e+00 23 2011 3 5.38839e+01 7.17427e-01 75 2011 4 5.74738e+01 1.73494e+00 512 2011 5 6.07123e+01 6.15241e-01 183 2011 6 6.20433e+01 2.84309e-01 149 2011 7 6.19233e+01 4.34245e-01 265 2011 8 5.96152e+01 1.28831e+00 69 2011 9 5.18796e+01 2.03184e+00 539 2011 10 4.70561e+01 2.08223e+00 356 2011 11 3.71819e+01 1.39884e+00 866 2011 12 3.41198e+01 5.34734e-01 1149 2012 1 3.62610e+01 1.60558e+00 918 2012 2 4.47297e+01 1.80711e+00 562 2012 3 5.13570e+01 2.58164e+00 649 2012 4 5.72090e+01 9.48634e-01 576 2012 5 6.07977e+01 6.38756e-01 254 2012 6 6.22825e+01 4.73037e-01 312 2012 7 6.22070e+01 4.77149e-01 128 2012 8 5.91475e+01 1.49849e+00 293 2012 9 5.34610e+01 2.01318e+00 370 2012 10 4.56845e+01 2.08664e+00 321 2012 11 3.81916e+01 2.08665e+00 878 2012 12 3.37684e+01 8.65165e-01 761 2013 1 3.63801e+01 1.39551e+00 772 2013 2 4.18843e+01 2.05454e+00 545 2013 3 5.16553e+01 2.22832e+00 192 2013 4 5.92512e+01 4.85677e-01 171 2013 5 6.12334e+01 7.27676e-01 335 2013 6 6.20740e+01 5.63081e-01 238 2013 7 6.20231e+01 5.55845e-01 134 2013 8 5.73340e+01 0.00000e+00 2 2013 9 5.11520e+01 8.17466e-01 256 2013 10 4.54160e+01 2.38923e+00 820 2013 11 3.84083e+01 1.91325e+00 772 2013 12 3.43310e+01 5.13331e-01 756 2014 1 3.64357e+01 1.57969e+00 1011 2014 2 4.33020e+01 2.27608e+00 803 2014 3 5.07868e+01 2.01089e+00 749 2014 4 5.84933e+01 1.67208e+00 520 2014 5 6.15147e+01 6.19813e-01 496 2014 6 6.25094e+01 3.10037e-01 379 2014 7 6.24365e+01 4.30931e-01 308 2014 8 5.95504e+01 1.29831e+00 705 2014 9 5.46731e+01 1.30805e+00 169 2014 10 4.55425e+01 2.74120e+00 1148 2014 11 3.77463e+01 2.29281e+00 822 2014 12 3.38809e+01 4.01577e-01 752 2015 1 3.62768e+01 1.37053e+00 739 2015 2 4.19953e+01 2.52591e+00 396 2015 3 5.28751e+01 1.85892e+00 416 2015 4 5.68480e+01 1.52909e+00 402 2015 5 6.06413e+01 1.12079e+00 324 2015 6 6.18631e+01 7.48053e-01 447 2015 7 6.18694e+01 4.18911e-01 306 2015 8 5.88204e+01 1.74636e+00 305 2015 9 5.40976e+01 1.50503e+00 426 2015 10 4.49318e+01 2.52498e+00 561 2015 11 3.75235e+01 1.99308e+00 959 2015 12 3.38971e+01 6.22500e-01 583 2016 1 3.50745e+01 8.38838e-01 146 2016 2 4.22792e+01 1.92185e+00 436 2016 3 5.12090e+01 2.85706e+00 265 2016 4 5.76824e+01 1.46906e+00 458 2016 5 6.11269e+01 9.59519e-01 410 2016 6 6.25761e+01 1.39720e-01 384 2016 7 6.23001e+01 5.69985e-01 401 2016 8 5.94865e+01 8.48234e-01 261 2016 9 5.33427e+01 2.01860e+00 578 2016 10 4.55276e+01 1.63248e+00 585 2016 11 3.81249e+01 1.92265e+00 1133 2016 12 3.38106e+01 4.92224e-01 745 2017 1 3.59761e+01 1.41233e+00 628 2017 2 4.16207e+01 1.87738e+00 703 2017 3 5.03219e+01 2.40696e+00 108 2017 4 5.78174e+01 7.63466e-01 62 2017 5 6.09733e+01 6.48890e-01 346 2017 6 6.23845e+01 3.20918e-01 170 2017 7 6.26562e+01 3.76843e-01 200 2017 8 5.95177e+01 1.18922e+00 448 2017 9 5.34763e+01 2.76940e+00 138 2017 10 4.41069e+01 1.25024e+00 217 2017 11 3.72860e+01 2.36199e+00 412 2017 12 3.24151e+01 6.55579e-01 644 2018 1 3.60707e+01 7.21427e-01 188 2018 2 4.26523e+01 2.28600e+00 451 2018 3 nan nan 0 2018 4 5.55007e+01 1.79143e-02 3 2018 5 nan nan 0 2018 6 6.13765e+01 4.56610e-01 105 2018 7 6.19368e+01 2.81824e-01 111 2018 8 5.80553e+01 1.43142e+00 85 2018 9 5.26956e+01 1.47838e+00 346 2018 10 4.55050e+01 1.94319e+00 670 2018 11 3.75720e+01 1.68916e+00 307 2018 12 3.34112e+01 7.35100e-01 569 2019 1 3.44373e+01 1.09726e+00 673 2019 2 4.21611e+01 2.78554e+00 690 2019 3 5.06362e+01 2.93494e+00 367 2019 4 5.75666e+01 1.55392e+00 169 2019 5 6.00032e+01 5.28452e-03 8 2019 6 6.21006e+01 5.20207e-01 222 2019 7 6.14125e+01 5.11765e-01 188 2019 8 5.83788e+01 1.14051e+00 121 2019 9 5.14332e+01 8.37767e-01 217 2019 10 4.54148e+01 2.84343e+00 622 2019 11 3.81374e+01 2.26591e+00 899 2019 12 3.36026e+01 4.95377e-01 504 2020 1 3.51815e+01 1.76262e+00 847 2020 2 4.19524e+01 1.88464e+00 622 2020 3 5.18035e+01 2.45283e+00 602 2020 4 5.67016e+01 1.77215e+00 237 2020 5 6.13435e+01 6.70081e-01 429 2020 6 6.24641e+01 2.88158e-01 467 2020 7 6.22080e+01 5.58683e-01 282 2020 8 5.95842e+01 1.25166e+00 640 2020 9 5.21337e+01 2.25350e+00 538 2020 10 4.54516e+01 2.27967e+00 396 2020 11 3.64521e+01 1.13222e+00 448 2020 12 3.37978e+01 6.17487e-01 1034 2021 1 3.62542e+01 1.48410e+00 768 2021 2 4.31478e+01 1.97858e+00 777 2021 3 4.91184e+01 2.34783e+00 389 2021 4 5.94464e+01 1.16161e+00 125 2021 5 6.19115e+01 6.90480e-01 651 2021 6 6.22595e+01 3.45004e-01 257 2021 7 6.21626e+01 7.10310e-01 565 2021 8 5.94326e+01 6.79914e-01 372 2021 9 5.16906e+01 1.81789e+00 459 2021 10 4.50804e+01 2.31659e+00 795 2021 11 3.69218e+01 1.98224e+00 796 2021 12 3.42266e+01 5.18771e-01 1028 2022 1 3.53076e+01 8.86366e-01 568 2022 2 4.35527e+01 2.63087e+00 689 2022 3 5.13210e+01 2.04102e+00 411 2022 4 6.01334e+01 5.76153e-01 67 2022 5 6.12691e+01 6.29084e-01 515 2022 6 6.23846e+01 3.76091e-01 479 2022 7 6.25933e+01 3.92052e-01 320 2022 8 6.02744e+01 1.30613e+00 142 2022 9 5.09943e+01 8.92026e-01 249 2022 10 4.52439e+01 2.73859e+00 964 2022 11 3.80167e+01 1.98804e+00 1114 2022 12 3.38261e+01 8.72593e-01 856 2023 1 3.56356e+01 1.73438e+00 676 2023 2 4.39058e+01 2.54896e+00 926 2023 3 5.03763e+01 2.41421e+00 547 2023 4 5.80043e+01 1.34542e+00 269 2023 5 6.13210e+01 1.00222e+00 700 2023 6 6.19822e+01 3.79364e-01 119 2023 7 6.18146e+01 4.17286e-01 219 2023 8 5.82678e+01 1.45654e+00 128 2023 9 5.34235e+01 2.10141e+00 301 2023 10 4.43666e+01 3.34226e+00 585 2023 11 3.69615e+01 2.03146e+00 833 2023 12 3.34582e+01 9.54627e-01 290 2024 1 3.70655e+01 1.63088e+00 211 2024 2 4.23995e+01 2.27035e+00 292 2024 3 5.05865e+01 2.87940e+00 269 2024 4 5.51138e+01 1.51818e-01 64