YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.11662e+00 1.01349e-01 34 2000 3 3.11022e+00 9.49221e-01 157 2000 4 4.78393e+00 9.83197e-01 183 2000 5 1.05791e+01 1.40080e+00 116 2000 6 1.67546e+01 1.91595e+00 304 2000 7 1.97222e+01 9.78411e-01 435 2000 8 2.01420e+01 7.41690e-01 437 2000 9 1.77980e+01 2.98378e+00 501 2000 10 1.41392e+01 6.52272e-01 333 2000 11 1.30766e+01 8.99657e-01 191 2000 12 7.98545e+00 3.25470e-01 66 2001 1 1.54728e-01 5.78919e-01 92 2001 2 5.92500e-01 4.25000e-02 2 2001 3 1.39330e+00 5.43150e-01 132 2001 4 2.76175e+00 8.28332e-01 57 2001 5 1.02148e+01 8.07828e-01 21 2001 6 9.78667e+00 2.68965e-01 15 2001 7 2.10260e+01 1.83141e+00 559 2001 8 2.18742e+01 1.63866e+00 938 2001 9 2.01289e+01 7.34230e-01 851 2001 10 1.42826e+01 1.66460e+00 325 2001 11 1.17135e+01 6.68796e-01 583 2001 12 9.31983e+00 6.05609e-01 406 2002 1 3.89500e+00 0.00000e+00 2 2002 2 2.21134e+00 4.86096e-01 168 2002 3 1.84385e+00 8.55304e-01 183 2002 4 3.20887e+00 2.05360e+00 115 2002 5 7.09574e+00 7.18883e-01 277 2002 6 1.84965e+01 3.78954e+00 284 2002 7 2.23317e+01 1.02895e+00 1961 2002 8 2.20865e+01 9.66769e-01 1875 2002 9 2.08542e+01 1.63726e+00 2289 2002 10 1.59240e+01 2.29487e+00 992 2002 11 9.21472e+00 8.87726e-01 382 2002 12 4.92716e+00 1.04001e+00 153 2003 1 2.31418e+00 5.16722e-01 91 2003 2 -1.82988e-01 5.00182e-01 82 2003 3 1.12332e+00 3.56361e-01 155 2003 4 1.71964e+00 4.60875e-01 239 2003 5 6.53894e+00 1.64398e+00 199 2003 6 1.59493e+01 2.04757e+00 250 2003 7 1.99696e+01 1.00763e+00 1376 2003 8 2.23547e+01 9.13213e-01 2338 2003 9 1.99153e+01 9.93660e-01 1333 2003 10 1.42804e+01 9.64610e-01 971 2003 11 9.90538e+00 1.25319e+00 434 2003 12 7.03265e+00 1.01661e+00 283 2004 1 3.89375e+00 5.98021e-01 60 2004 2 5.73894e-01 2.86476e-01 226 2004 3 1.08694e+00 6.61928e-01 129 2004 4 3.10285e+00 1.32659e+00 376 2004 5 8.57174e+00 3.15795e+00 284 2004 6 1.46902e+01 1.58786e+00 520 2004 7 1.89323e+01 1.70043e+00 1555 2004 8 1.92080e+01 1.31253e+00 1481 2004 9 1.97534e+01 5.84041e-01 2503 2004 10 1.40508e+01 1.46683e+00 796 2004 11 1.02948e+01 7.32457e-01 386 2004 12 6.30239e+00 1.02814e+00 220 2005 1 1.06297e+00 5.41817e-01 180 2005 2 5.23099e-01 8.73937e-01 71 2005 3 7.44591e-01 3.74929e-01 220 2005 4 5.63841e+00 7.67400e-01 173 2005 5 8.79638e+00 2.18578e+00 784 2005 6 1.84531e+01 2.57211e+00 352 2005 7 2.11198e+01 2.38167e+00 1177 2005 8 2.27528e+01 1.33436e+00 1948 2005 9 2.09477e+01 9.08147e-01 2088 2005 10 1.85722e+01 1.94241e+00 537 2005 11 1.20396e+01 6.78632e-01 348 2005 12 2.15500e+00 2.50000e-01 4 2006 1 2.11475e+00 4.47021e-01 102 2006 2 1.58891e+00 6.54835e-01 96 2006 3 1.98331e+00 6.50441e-01 649 2006 4 3.79392e+00 8.01772e-01 357 2006 5 7.60842e+00 1.41426e+00 294 2006 6 1.56223e+01 2.34391e+00 702 2006 7 2.18506e+01 1.88681e+00 2260 2006 8 2.26371e+01 2.09171e+00 1717 2006 9 1.89177e+01 1.01759e+00 1198 2006 10 1.57105e+01 2.41367e+00 855 2006 11 8.91570e+00 1.27506e+00 605 2006 12 6.09638e+00 6.21308e-01 112 2007 1 4.65848e+00 1.00403e+00 457 2007 2 5.60122e-01 3.89112e-01 82 2007 3 6.12785e-01 7.59767e-01 158 2007 4 2.66351e+00 7.93461e-01 366 2007 5 7.20618e+00 7.86051e-01 34 2007 6 1.79772e+01 3.97209e+00 1144 2007 7 1.97196e+01 1.49650e+00 1429 2007 8 2.16222e+01 1.15672e+00 1943 2007 9 2.01614e+01 1.93396e+00 1711 2007 10 1.76584e+01 2.01932e+00 1292 2007 11 1.12389e+01 1.31630e+00 266 2007 12 3.98167e+00 5.39758e-01 3 2008 1 9.35000e-01 0.00000e+00 1 2008 2 5.38333e-01 3.51979e-02 6 2008 3 1.51900e+00 3.95918e-01 591 2008 4 2.52600e+00 5.02559e-01 160 2008 5 7.34032e+00 9.02113e-01 248 2008 6 1.62271e+01 2.26324e+00 532 2008 7 1.98272e+01 1.62356e+00 1757 2008 8 2.11279e+01 8.22545e-01 2505 2008 9 1.86637e+01 1.50157e+00 1521 2008 10 1.40248e+01 1.97348e+00 627 2008 11 1.03351e+01 2.33157e+00 304 2008 12 1.87559e+00 1.80212e+00 93 2009 1 nan nan 0 2009 2 -6.57895e-03 1.69396e-01 19 2009 3 1.52351e+00 5.26087e-01 499 2009 4 2.14021e+00 3.83443e-01 309 2009 5 1.05561e+01 6.27204e-01 145 2009 6 1.52778e+01 3.57910e+00 476 2009 7 1.90719e+01 1.41292e+00 1368 2009 8 2.12952e+01 6.99070e-01 1759 2009 9 1.83882e+01 1.06691e+00 1359 2009 10 1.30835e+01 1.66153e+00 309 2009 11 1.01062e+01 1.38046e+00 546 2009 12 7.18107e+00 1.21740e+00 103 2010 1 1.09742e+00 7.53323e-01 149 2010 2 9.52407e-01 1.01794e+00 108 2010 3 2.45862e+00 8.95563e-01 547 2010 4 4.93287e+00 1.10692e+00 127 2010 5 8.10329e+00 1.92094e+00 348 2010 6 1.82870e+01 3.01707e+00 905 2010 7 2.32527e+01 1.55600e+00 2462 2010 8 2.36005e+01 1.24589e+00 2781 2010 9 1.81503e+01 8.01132e-01 1020 2010 10 1.54868e+01 7.69995e-01 1186 2010 11 1.19523e+01 1.97684e+00 593 2010 12 5.03500e+00 0.00000e+00 2 2011 1 nan nan 0 2011 2 6.23877e-01 6.68966e-01 138 2011 3 1.52849e+00 5.63881e-01 773 2011 4 2.02762e+00 1.22895e+00 248 2011 5 6.84765e+00 7.50602e-01 251 2011 6 1.70256e+01 2.41690e+00 607 2011 7 2.22514e+01 1.45272e+00 1657 2011 8 2.20760e+01 1.24443e+00 2236 2011 9 1.91817e+01 1.63826e+00 706 2011 10 1.15352e+01 2.26026e+00 491 2011 11 1.13651e+01 1.09314e+00 725 2011 12 6.68938e+00 6.95377e-01 137 2012 1 4.80354e+00 6.16010e-01 312 2012 2 1.52760e+00 5.84731e-01 455 2012 3 2.91377e+00 2.04472e+00 134 2012 4 6.36268e+00 9.42889e-01 816 2012 5 1.13485e+01 1.80022e+00 460 2012 6 1.63646e+01 2.36511e+00 702 2012 7 2.27348e+01 1.56645e+00 2239 2012 8 2.25558e+01 1.23661e+00 2537 2012 9 1.99783e+01 2.21849e+00 1613 2012 10 1.53665e+01 1.35156e+00 671 2012 11 7.83699e+00 1.70556e+00 606 2012 12 6.92511e+00 7.58385e-01 325 2013 1 3.04357e+00 1.03495e+00 14 2013 2 3.31136e-01 3.04746e-01 66 2013 3 1.45872e+00 8.04370e-01 450 2013 4 2.72095e+00 9.98420e-01 461 2013 5 8.86593e+00 2.04304e+00 369 2013 6 1.48826e+01 3.45993e+00 495 2013 7 2.21518e+01 2.62537e+00 1664 2013 8 1.97609e+01 2.02885e+00 1689 2013 9 1.88551e+01 2.69157e+00 1064 2013 10 1.66182e+01 1.80148e+00 1437 2013 11 9.94964e+00 1.35445e+00 378 2013 12 7.24000e+00 2.70000e-01 2 2014 1 3.03572e-02 2.10598e-01 14 2014 2 nan nan 0 2014 3 3.69516e-01 2.45171e-01 258 2014 4 1.41808e+00 7.17840e-01 172 2014 5 7.65793e+00 6.45708e+00 82 2014 6 1.61173e+01 2.90859e+00 326 2014 7 1.97171e+01 1.49839e+00 1225 2014 8 1.98087e+01 2.24019e+00 1144 2014 9 1.86978e+01 2.84435e+00 1737 2014 10 1.40720e+01 9.47208e-01 871 2014 11 9.79508e+00 1.54170e+00 65 2014 12 5.26084e+00 3.05037e-01 269 2015 1 2.12500e-01 2.83237e-01 6 2015 2 nan nan 0 2015 3 4.20634e-01 3.39582e-01 213 2015 4 2.36627e+00 7.16092e-01 67 2015 5 8.25912e+00 2.76187e+00 40 2015 6 1.58585e+01 2.34621e+00 623 2015 7 1.99298e+01 2.95141e+00 1414 2015 8 2.19505e+01 1.06006e+00 1942 2015 9 2.01076e+01 1.53233e+00 1992 2015 10 1.31331e+01 1.03013e+00 582 2015 11 1.14952e+01 9.42261e-01 1137 2015 12 7.87366e+00 9.48860e-01 347 2016 1 4.25000e+00 0.00000e+00 1 2016 2 1.50477e+00 1.62924e-01 43 2016 3 1.90881e+00 8.63167e-01 381 2016 4 3.40422e+00 7.30630e-01 256 2016 5 9.22922e+00 2.51732e+00 501 2016 6 1.76112e+01 2.04108e+00 538 2016 7 2.14038e+01 2.35232e+00 1368 2016 8 2.38082e+01 8.87666e-01 2820 2016 9 2.12061e+01 9.76188e-01 1640 2016 10 1.71813e+01 1.51800e+00 476 2016 11 1.23461e+01 1.49568e+00 1213 2016 12 6.37937e+00 2.32471e+00 8 2017 1 6.32546e-01 3.50466e-01 108 2017 2 1.69614e+00 2.40336e-01 184 2017 3 2.16421e+00 4.55480e-01 359 2017 4 6.89775e+00 2.03829e+00 89 2017 5 9.72525e+00 2.46355e+00 671 2017 6 1.68203e+01 2.31403e+00 1441 2017 7 2.01072e+01 9.98500e-01 1692 2017 8 2.13089e+01 8.35866e-01 1910 2017 9 1.98843e+01 1.40775e+00 1929 2017 10 1.59996e+01 1.95152e+00 865 2017 11 8.83570e+00 1.06998e+00 258 2017 12 7.43722e+00 1.01898e+00 354 2018 1 6.29494e-01 2.51173e-01 79 2018 2 7.30366e-01 1.75860e-01 123 2018 3 1.43101e+00 8.19827e-01 680 2018 4 2.78798e+00 6.70944e-01 590 2018 5 1.04075e+01 4.52500e-01 2 2018 6 1.52900e+01 3.02510e+00 425 2018 7 2.19250e+01 1.52843e+00 2379 2018 8 2.34638e+01 1.11393e+00 2349 2018 9 1.94356e+01 2.24976e+00 914 2018 10 1.36060e+01 1.17228e+00 680 2018 11 8.07718e+00 4.42911e-01 94 2018 12 4.96692e+00 7.06762e-01 99 2019 1 2.42449e+00 7.47514e-01 99 2019 2 3.78709e-01 2.57161e-01 151 2019 3 9.33940e-01 3.84474e-01 420 2019 4 3.09582e+00 7.87142e-01 325 2019 5 7.57415e+00 2.11180e+00 59 2019 6 1.31132e+01 2.37399e+00 673 2019 7 2.08215e+01 1.67306e+00 1538 2019 8 2.05905e+01 1.06594e+00 2625 2019 9 1.90500e+01 7.57903e-01 1667 2019 10 1.48371e+01 2.45118e+00 1121 2019 11 7.34507e+00 5.18415e-01 378 2019 12 3.87126e+00 5.47835e-01 131 2020 1 2.60044e+00 8.29615e-01 250 2020 2 1.65633e+00 4.52454e-01 610 2020 3 1.91853e+00 5.60593e-01 1077 2020 4 4.31326e+00 1.07603e+00 765 2020 5 8.32587e+00 3.19768e+00 925 2020 6 1.73944e+01 2.38745e+00 1972 2020 7 2.24602e+01 1.92643e+00 2526 2020 8 2.20486e+01 1.88400e+00 1517 2020 9 1.84131e+01 1.05588e+00 2542 2020 10 1.54533e+01 1.69304e+00 1648 2020 11 1.03482e+01 1.24557e+00 1367 2020 12 7.10340e+00 5.56885e-01 444 2021 1 3.04678e+00 8.80025e-01 520 2021 2 1.43212e+00 4.98356e-01 466 2021 3 1.85512e+00 8.64310e-01 1661 2021 4 4.21286e+00 1.28150e+00 740 2021 5 7.75260e+00 2.46742e+00 1076 2021 6 1.60820e+01 3.27939e+00 1378 2021 7 2.05951e+01 2.13577e+00 2535 2021 8 2.30833e+01 1.76913e+00 2942 2021 9 2.06718e+01 2.25722e+00 2673 2021 10 1.69924e+01 1.75916e+00 1091 2021 11 1.18593e+01 9.55332e-01 738 2021 12 7.22600e+00 8.69199e-01 421 2022 1 3.89084e+00 1.55361e+00 148 2022 2 5.37787e-01 4.79984e-01 183 2022 3 1.09350e+00 6.33070e-01 627 2022 4 3.41725e+00 7.77479e-01 331 2022 5 9.05817e+00 2.01528e+00 344 2022 6 1.78848e+01 2.83139e+00 2095 2022 7 2.16887e+01 1.41656e+00 2764 2022 8 2.20035e+01 1.77741e+00 2647 2022 9 2.11629e+01 1.68368e+00 2285 2022 10 1.52254e+01 2.14828e+00 1370 2022 11 1.10478e+01 2.10157e+00 1371 2022 12 7.11335e+00 2.35675e-01 230 2023 1 2.24897e+00 3.31647e-01 117 2023 2 1.57463e+00 3.94967e-01 806 2023 3 2.18633e+00 4.16596e-01 1120 2023 4 4.30797e+00 1.35579e+00 804 2023 5 1.10101e+01 3.23354e+00 994 2023 6 1.33111e+01 2.54674e+00 829 2023 7 2.05632e+01 1.64151e+00 3071 2023 8 2.06218e+01 1.65609e+00 2166 2023 9 1.90289e+01 1.16535e+00 1607 2023 10 1.66730e+01 4.15940e+00 884 2023 11 1.13686e+01 1.06067e+00 1509 2023 12 7.27207e+00 4.77965e-01 670 2024 1 nan nan 0 2024 2 2.41708e+00 5.01855e-01 1285 2024 3 3.19308e+00 4.49709e-01 1086 2024 4 2.12112e+00 4.99052e-01 40