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 1.49487e+01 3.66923e-01 127 2002 8 1.30947e+01 7.64760e-01 377 2002 9 1.12333e+01 2.23599e+00 546 2002 10 8.32960e+00 1.23411e+00 1002 2002 11 6.53052e+00 1.80102e+00 595 2002 12 7.51697e+00 1.25446e+00 735 2003 1 8.31987e+00 1.63388e+00 957 2003 2 8.86924e+00 1.26505e+00 640 2003 3 1.07083e+01 8.88284e-01 310 2003 4 1.02038e+01 1.35787e+00 704 2003 5 1.25914e+01 1.59517e+00 749 2003 6 1.53622e+01 3.21927e+00 256 2003 7 1.53873e+01 1.04360e+00 425 2003 8 1.31472e+01 1.32137e+00 295 2003 9 1.17667e+01 2.11549e+00 509 2003 10 1.00548e+01 1.12090e+00 841 2003 11 9.03545e+00 1.96165e+00 1216 2003 12 5.97730e+00 1.21178e+00 767 2004 1 9.16254e+00 7.57381e-01 827 2004 2 1.07210e+01 1.91921e+00 447 2004 3 1.36327e+01 1.22157e+00 992 2004 4 1.01133e+01 1.94783e+00 576 2004 5 1.53000e+01 1.74242e+00 768 2004 6 1.57668e+01 1.62255e+00 825 2004 7 1.41799e+01 2.49553e+00 409 2004 8 1.30847e+01 1.08860e+00 360 2004 9 7.46175e+00 2.84326e+00 384 2004 10 6.75374e+00 8.38875e-01 912 2004 11 8.88152e+00 1.00023e+00 941 2004 12 7.11916e+00 1.85934e+00 512 2005 1 5.83355e+00 2.35807e+00 768 2005 2 8.96922e+00 2.41706e+00 871 2005 3 9.72770e+00 1.48559e+00 384 2005 4 1.19510e+01 1.41136e+00 576 2005 5 1.52995e+01 1.26327e+00 649 2005 6 1.42133e+01 1.10055e+00 320 2005 7 9.98497e+00 3.56092e+00 640 2005 8 7.99280e+00 1.40384e+00 571 2005 9 3.62259e+00 1.87466e+00 387 2005 10 4.30424e+00 1.05211e+00 765 2005 11 4.90280e+00 1.08966e+00 849 2005 12 6.53477e+00 9.47191e-01 924 2006 1 8.37669e+00 2.13909e+00 582 2006 2 8.55108e+00 2.07887e+00 960 2006 3 1.13793e+01 7.76927e-01 1024 2006 4 1.45165e+01 1.23360e+00 862 2006 5 1.44542e+01 1.13660e+00 801 2006 6 1.30967e+01 1.35308e+00 672 2006 7 1.42748e+01 1.27062e+00 503 2006 8 1.39840e+01 1.69164e+00 384 2006 9 1.19135e+01 1.86017e+00 610 2006 10 8.68392e+00 8.65512e-01 893 2006 11 8.38249e+00 2.07953e+00 723 2006 12 6.94481e+00 1.97354e+00 448 2007 1 9.06774e+00 9.17169e-01 641 2007 2 9.66056e+00 2.07690e+00 516 2007 3 1.35174e+01 2.40603e+00 701 2007 4 1.06527e+01 3.02550e+00 901 2007 5 1.24654e+01 1.72501e+00 640 2007 6 1.43824e+01 1.54932e+00 325 2007 7 1.57106e+01 2.86982e+00 589 2007 8 1.50286e+01 1.31508e+00 733 2007 9 9.76604e+00 2.32188e+00 768 2007 10 9.25823e+00 1.00664e+00 655 2007 11 9.11105e+00 9.89592e-01 1007 2007 12 9.74309e+00 2.12850e+00 998 2008 1 9.08938e+00 2.21091e+00 829 2008 2 1.19846e+01 1.67992e+00 736 2008 3 1.13281e+01 3.60018e+00 808 2008 4 1.37823e+01 1.69597e+00 960 2008 5 1.34846e+01 1.14130e+00 707 2008 6 1.55744e+01 6.15300e-01 623 2008 7 1.53860e+01 2.36681e+00 491 2008 8 1.29829e+01 4.13504e-01 158 2008 9 9.79949e+00 2.44656e+00 512 2008 10 8.57062e+00 1.42249e+00 896 2008 11 9.08660e+00 1.31323e+00 949 2008 12 9.10949e+00 2.46751e+00 1176 2009 1 8.86426e+00 2.41365e+00 768 2009 2 1.18115e+01 1.76692e+00 879 2009 3 1.21733e+01 2.56457e+00 1088 2009 4 1.12050e+01 1.71842e+00 651 2009 5 1.56840e+01 1.27819e+00 881 2009 6 1.58936e+01 1.07770e+00 243 2009 7 1.61247e+01 7.56017e-01 262 2009 8 1.46334e+01 1.85656e+00 600 2009 9 1.19337e+01 1.39349e+00 485 2009 10 1.04409e+01 1.56381e+00 854 2009 11 8.69732e+00 1.66605e+00 387 2009 12 6.77891e+00 1.08784e+00 237 2010 1 8.64751e+00 1.44908e+00 388 2010 2 7.41041e+00 1.67369e+00 412 2010 3 7.56822e+00 2.22476e+00 843 2010 4 1.14175e+01 8.27944e-01 798 2010 5 1.37381e+01 1.55115e+00 739 2010 6 1.55129e+01 9.66287e-01 792 2010 7 1.46885e+01 4.80987e-01 338 2010 8 1.37858e+01 7.67426e-01 475 2010 9 1.30314e+01 7.16166e-01 833 2010 10 1.20893e+01 8.95948e-01 1153 2010 11 9.81846e+00 1.06382e+00 1088 2010 12 5.81226e+00 1.17691e+00 804 2011 1 8.86790e+00 8.50015e-01 537 2011 2 9.99046e+00 7.27141e-01 704 2011 3 1.10717e+01 1.25355e+00 991 2011 4 1.17985e+01 1.43308e+00 902 2011 5 9.30617e+00 1.47116e+00 960 2011 6 1.21896e+01 8.74762e-01 613 2011 7 1.58557e+01 9.25834e-01 545 2011 8 1.43256e+01 1.26695e+00 371 2011 9 1.09361e+01 1.77097e+00 412 2011 10 8.00725e+00 1.75983e+00 816 2011 11 9.05892e+00 2.06397e+00 1266 2011 12 8.41791e+00 1.54950e+00 1166 2012 1 9.09977e+00 2.24285e+00 828 2012 2 1.07115e+01 1.87681e+00 700 2012 3 1.30465e+01 1.22023e+00 944 2012 4 1.22893e+01 1.04793e+00 640 2012 5 1.41896e+01 6.60110e-01 512 2012 6 1.10113e+01 3.45722e+00 256 2012 7 1.37190e+01 1.57196e+00 394 2012 8 1.61822e+01 1.04050e+00 444 2012 9 1.31508e+01 1.12321e+00 541 2012 10 1.17068e+01 2.25755e+00 952 2012 11 9.15437e+00 8.51583e-01 967 2012 12 7.74312e+00 2.67536e+00 603 2013 1 9.43942e+00 1.90085e+00 1050 2013 2 9.93408e+00 2.02260e+00 785 2013 3 1.10544e+01 1.44502e+00 832 2013 4 1.36889e+01 9.46566e-01 576 2013 5 1.07693e+01 1.03028e+00 692 2013 6 1.22284e+01 7.77667e-01 473 2013 7 1.31864e+01 6.28043e-01 320 2013 8 1.31497e+01 1.00072e+00 575 2013 9 1.11163e+01 1.53396e+00 819 2013 10 8.78630e+00 1.00766e+00 793 2013 11 9.48267e+00 8.66372e-01 277 2013 12 8.31800e+00 1.19483e+00 507 2014 1 5.46967e+00 1.28467e+00 448 2014 2 8.83004e+00 1.49482e+00 714 2014 3 9.99894e+00 1.49635e+00 663 2014 4 1.10296e+01 6.90260e-01 512 2014 5 1.35814e+01 1.96576e+00 879 2014 6 1.48906e+01 1.65979e+00 642 2014 7 1.40310e+01 1.68497e+00 419 2014 8 1.20751e+01 1.34556e+00 584 2014 9 1.06257e+01 9.28052e-01 171 2014 10 9.33814e+00 1.17195e+00 1004 2014 11 7.25958e+00 9.28807e-01 971 2014 12 7.14116e+00 7.06682e-01 896 2015 1 7.01264e+00 1.02976e+00 640 2015 2 8.42343e+00 1.11340e+00 743 2015 3 1.29895e+01 8.60687e-01 1104 2015 4 1.26249e+01 5.40417e-01 553 2015 5 9.86747e+00 2.15303e+00 1077 2015 6 1.08261e+01 1.00769e+00 565 2015 7 1.05430e+01 9.79756e-01 384 2015 8 1.20080e+01 1.32076e+00 466 2015 9 1.07217e+01 9.90046e-01 256 2015 10 7.59598e+00 6.29364e-01 547 2015 11 9.68390e+00 9.92719e-01 832 2015 12 9.99521e+00 1.90789e+00 749 2016 1 6.30833e+00 2.36844e+00 325 2016 2 6.60047e+00 2.91488e+00 1095 2016 3 1.04164e+01 2.44743e+00 678 2016 4 1.19914e+01 7.88313e-01 832 2016 5 1.04675e+01 2.10253e+00 760 2016 6 1.45897e+01 1.97825e+00 600 2016 7 1.58050e+01 1.20174e+00 483 2016 8 1.15426e+01 1.26844e+00 739 2016 9 1.18809e+01 1.63119e+00 640 2016 10 1.08105e+01 2.03367e+00 928 2016 11 1.06769e+01 7.32316e-01 917 2016 12 1.06732e+01 6.86716e-01 828 2017 1 8.02952e+00 3.16147e+00 771 2017 2 1.07892e+01 1.92496e+00 1164 2017 3 1.22849e+01 1.68946e+00 1234 2017 4 1.39435e+01 1.21026e+00 640 2017 5 1.21633e+01 1.92455e+00 482 2017 6 1.33586e+01 2.26745e+00 256 2017 7 1.58842e+01 1.82835e+00 572 2017 8 1.15945e+01 9.73561e-01 642 2017 9 7.79673e+00 3.63261e+00 828 2017 10 7.55753e+00 1.09082e+00 769 2017 11 7.42882e+00 7.64466e-01 788 2017 12 7.87814e+00 1.51658e+00 793 2018 1 7.60947e+00 2.07804e+00 571 2018 2 1.26623e+01 1.68085e+00 896 2018 3 1.31209e+01 1.83691e+00 1012 2018 4 1.28479e+01 2.25312e+00 994 2018 5 1.44508e+01 1.23743e+00 512 2018 6 1.23680e+01 5.67848e-01 348 2018 7 1.41758e+01 1.63926e+00 448 2018 8 1.31066e+01 9.94505e-01 704 2018 9 1.08477e+01 2.59964e+00 852 2018 10 1.08906e+01 2.08391e+00 1028 2018 11 8.73456e+00 1.53309e+00 509 2018 12 5.81815e+00 2.53491e+00 622 2019 1 7.03944e+00 1.55154e+00 834 2019 2 1.17226e+01 1.06802e+00 727 2019 3 1.19379e+01 1.06205e+00 896 2019 4 1.11518e+01 2.04450e+00 527 2019 5 1.43213e+01 1.21848e+00 1015 2019 6 1.42079e+01 1.24989e+00 497 2019 7 1.21841e+01 9.13319e-01 544 2019 8 1.06782e+01 1.18550e+00 400 2019 9 1.14055e+01 6.90250e-01 704 2019 10 9.46946e+00 2.10449e+00 1146 2019 11 7.16034e+00 7.05538e-01 522 2019 12 8.55747e+00 1.16486e+00 267 2020 1 9.88667e+00 2.20092e+00 764 2020 2 1.03783e+01 1.25879e+00 705 2020 3 1.40788e+01 2.07622e+00 1082 2020 4 1.50504e+01 1.78638e+00 439 2020 5 1.45306e+01 1.47113e+00 726 2020 6 1.41910e+01 1.31147e+00 455 2020 7 1.33446e+01 1.51362e+00 437 2020 8 1.32707e+01 5.25135e-01 320 2020 9 9.98099e+00 1.17103e+00 276 2020 10 8.60408e+00 1.39622e+00 680 2020 11 7.61138e+00 2.16895e+00 1066 2020 12 5.83689e+00 5.76405e-01 730 2021 1 8.46844e+00 1.07634e+00 791 2021 2 1.06922e+01 2.89016e+00 698 2021 3 1.22492e+01 1.14404e+00 935 2021 4 1.28373e+01 1.89261e+00 890 2021 5 1.42181e+01 1.14088e+00 823 2021 6 1.46898e+01 1.76954e+00 301 2021 7 1.22895e+01 2.38753e+00 477 2021 8 1.20436e+01 1.18104e+00 640 2021 9 1.12354e+01 1.59160e+00 547 2021 10 1.16407e+01 1.43655e+00 832 2021 11 7.30347e+00 1.54654e+00 832 2021 12 9.63248e+00 1.72229e+00 896 2022 1 6.95830e+00 2.51025e+00 778 2022 2 9.71143e+00 2.08088e+00 1024 2022 3 1.02088e+01 1.71428e+00 704 2022 4 1.38877e+01 9.16856e-01 384 2022 5 1.54241e+01 1.62891e+00 632 2022 6 1.47314e+01 2.39385e+00 489 2022 7 1.10739e+01 2.21751e+00 392 2022 8 1.04853e+01 1.19454e+00 155 2022 9 1.11341e+01 1.97881e+00 414 2022 10 6.99483e+00 1.27843e+00 1152 2022 11 8.75198e+00 1.43354e+00 587 2022 12 8.45758e+00 7.89671e-01 830 2023 1 1.04242e+01 1.54968e+00 842 2023 2 1.08714e+01 3.11754e+00 1052 2023 3 1.43341e+01 2.16448e+00 965 2023 4 1.60788e+01 1.63357e+00 384 2023 5 1.33079e+01 2.27542e+00 828 2023 6 1.53781e+01 9.21090e-01 533 2023 7 1.14638e+01 2.43712e+00 498 2023 8 7.05654e+00 1.14216e+00 333 2023 9 8.44217e+00 2.49623e+00 662 2023 10 9.88504e+00 1.07809e+00 634 2023 11 9.88490e+00 1.04850e+00 768 2023 12 8.48682e+00 1.99525e+00 312 2024 1 9.39303e+00 2.48952e+00 218 2024 2 1.05578e+01 1.33677e+00 750 2024 3 1.29709e+01 9.80916e-01 556 2024 4 nan nan 0