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 3.94613e+00 9.09968e-01 124 2002 8 3.67285e+00 7.38756e-01 384 2002 9 3.20021e+00 8.58640e-01 298 2002 10 3.36407e+00 1.27366e+00 789 2002 11 4.24707e+00 2.51912e+00 874 2002 12 3.98591e+00 1.87105e+00 643 2003 1 4.59098e+00 1.23878e+00 920 2003 2 3.62586e+00 1.32195e+00 515 2003 3 1.38099e+01 7.40572e+00 115 2003 4 1.77160e+01 2.03094e+01 41 2003 5 6.95992e+00 5.29399e+00 192 2003 6 7.69119e+00 4.49442e+00 232 2003 7 1.90107e+01 9.23608e+00 110 2003 8 1.39684e+01 8.19181e+00 200 2003 9 6.12102e+00 4.77057e+00 337 2003 10 6.51733e+00 3.85697e+00 880 2003 11 5.94616e+00 4.62250e+00 929 2003 12 3.28835e+00 1.22703e+00 845 2004 1 4.02598e+00 1.44958e+00 771 2004 2 2.75406e+00 5.21308e-01 386 2004 3 6.61813e+00 2.53725e+00 828 2004 4 3.20837e+00 8.77535e-01 380 2004 5 3.52162e+00 1.16330e+00 531 2004 6 4.32561e+00 1.91370e+00 370 2004 7 4.34133e+00 9.66748e-01 429 2004 8 4.05141e+00 1.33689e+00 377 2004 9 1.92288e+01 1.46929e+01 143 2004 10 2.14021e+01 1.27247e+01 81 2004 11 2.42690e+01 9.48458e+00 75 2004 12 1.54726e+01 7.56269e+00 461 2005 1 8.64795e+00 4.21610e+00 597 2005 2 7.91742e+00 2.67913e+00 505 2005 3 6.24893e+00 4.00244e+00 384 2005 4 1.40090e+01 8.38418e+00 326 2005 5 1.41888e+01 1.31330e+01 82 2005 6 1.19792e+01 6.51205e+00 254 2005 7 2.15792e+01 8.47721e+00 100 2005 8 1.50538e+01 8.28415e+00 224 2005 9 7.30879e+00 1.82583e+00 320 2005 10 4.97004e+00 1.90004e+00 846 2005 11 3.56653e+00 1.14977e+00 960 2005 12 4.34581e+00 2.25307e+00 856 2006 1 1.11788e+01 6.58190e+00 471 2006 2 1.84902e+01 1.17783e+01 357 2006 3 1.31851e+01 8.26012e+00 919 2006 4 4.03040e+00 1.87849e+00 320 2006 5 2.49544e+00 1.10521e+00 506 2006 6 3.85047e+00 1.31202e+00 320 2006 7 4.58972e+00 1.20800e+00 129 2006 8 4.61168e+00 1.07579e+00 248 2006 9 3.82975e+00 1.06699e+00 832 2006 10 3.10276e+00 1.26839e+00 715 2006 11 2.70133e+00 1.29673e+00 832 2006 12 1.66122e+00 3.98424e-01 503 2007 1 2.31319e+00 1.53089e+00 384 2007 2 2.52995e+00 2.51335e+00 723 2007 3 2.37022e+00 1.24284e+00 978 2007 4 2.78681e+00 1.23701e+00 642 2007 5 2.74680e+00 1.19862e+00 127 2007 6 3.20665e+00 1.62098e+00 231 2007 7 3.32152e+00 1.53122e+00 370 2007 8 4.87177e+00 6.01492e-01 396 2007 9 4.55661e+00 1.04262e+00 466 2007 10 3.43533e+00 1.23992e+00 622 2007 11 2.29943e+00 1.07924e+00 1088 2007 12 2.65736e+00 2.52628e+00 697 2008 1 3.56910e+00 3.55347e+00 563 2008 2 3.60921e+00 1.29260e+00 768 2008 3 1.04588e+01 1.04124e+01 464 2008 4 9.90435e+00 5.78054e+00 394 2008 5 7.45530e+00 3.02070e+00 448 2008 6 5.24889e+00 1.16989e+00 288 2008 7 4.39954e+00 2.10272e+00 452 2008 8 4.60967e+00 1.93415e+00 256 2008 9 8.21384e+00 9.38113e+00 271 2008 10 5.91399e+00 2.45671e+00 798 2008 11 2.76648e+00 1.47471e+00 958 2008 12 8.37826e+00 4.34534e+00 869 2009 1 4.94443e+00 2.01431e+00 584 2009 2 3.69256e+00 2.20210e+00 903 2009 3 2.96299e+00 1.28244e+00 815 2009 4 7.63006e+00 5.40171e+00 460 2009 5 1.22907e+01 7.74204e+00 196 2009 6 3.79166e+00 6.79540e-01 69 2009 7 nan nan 0 2009 8 8.65846e+00 2.66417e+00 451 2009 9 6.66405e+00 3.08787e+00 796 2009 10 3.91165e+00 1.55025e+00 812 2009 11 3.23209e+00 1.82037e+00 653 2009 12 2.99017e+00 2.10009e+00 185 2010 1 4.60611e+00 2.32842e+00 870 2010 2 9.38477e+00 4.12409e+00 741 2010 3 1.41126e+01 6.81348e+00 831 2010 4 1.61156e+01 1.09378e+01 184 2010 5 6.89691e+00 4.39998e+00 526 2010 6 6.08067e+00 4.43311e+00 521 2010 7 6.70005e+00 2.35571e+00 256 2010 8 6.13236e+00 2.71014e+00 160 2010 9 5.63521e+00 2.09372e+00 560 2010 10 3.15234e+00 1.20487e+00 1472 2010 11 2.83842e+00 1.08938e+00 1203 2010 12 2.62614e+00 1.46770e+00 775 2011 1 2.90416e+00 1.97476e+00 560 2011 2 2.09066e+00 1.12927e+00 741 2011 3 2.94304e+00 1.91474e+00 768 2011 4 3.07458e+00 1.52786e+00 798 2011 5 2.56658e+00 1.14489e+00 730 2011 6 2.10836e+00 5.66250e-01 256 2011 7 3.13018e+00 1.14005e+00 351 2011 8 2.46773e+00 9.00097e-01 408 2011 9 3.13317e+00 1.05893e+00 817 2011 10 2.90722e+00 1.65427e+00 885 2011 11 2.38563e+00 1.14950e+00 1088 2011 12 2.05751e+00 1.18493e+00 1011 2012 1 1.96208e+00 1.11997e+00 896 2012 2 3.39334e+00 1.65129e+00 102 2012 3 2.82860e+00 1.54153e+00 919 2012 4 2.68455e+00 1.46382e+00 711 2012 5 2.37169e+00 6.54495e-01 320 2012 6 4.61866e+00 2.06656e+00 167 2012 7 4.68423e+00 1.07808e+00 249 2012 8 2.21968e+01 1.11182e+01 262 2012 9 1.20978e+01 9.63111e+00 351 2012 10 1.14434e+01 4.73399e+00 533 2012 11 4.85177e+00 1.47785e+00 780 2012 12 5.89618e+00 4.03634e+00 407 2013 1 4.12602e+00 3.28122e+00 604 2013 2 4.25239e+00 1.96028e+00 389 2013 3 3.61194e+00 1.72628e+00 635 2013 4 1.69475e+01 9.75969e+00 340 2013 5 6.40415e+00 5.80489e+00 424 2013 6 1.59378e+01 1.20043e+01 314 2013 7 2.02110e+01 7.19724e+00 73 2013 8 1.88949e+01 9.07843e+00 53 2013 9 2.28891e+01 1.12718e+01 398 2013 10 8.58833e+00 4.56615e+00 865 2013 11 5.93436e+00 2.40075e+00 447 2013 12 4.37324e+00 1.73959e+00 704 2014 1 5.30613e+00 1.88951e+00 500 2014 2 7.87287e+00 7.27933e+00 704 2014 3 8.42078e+00 5.09655e+00 570 2014 4 1.29775e+01 8.31480e+00 183 2014 5 1.80256e+01 6.22064e+00 128 2014 6 2.34487e+01 1.24943e+01 216 2014 7 1.04255e+01 4.25675e+00 537 2014 8 4.47542e+00 1.59603e+00 358 2014 9 8.69296e+00 2.44998e+00 116 2014 10 5.50183e+00 3.45842e+00 1196 2014 11 3.25936e+00 2.33527e+00 896 2014 12 1.91280e+00 9.41319e-01 442 2015 1 3.63418e+00 2.76460e+00 784 2015 2 3.65376e+00 1.42899e+00 752 2015 3 1.17228e+01 1.00354e+01 346 2015 4 1.47328e+01 9.67407e+00 119 2015 5 6.54046e+00 1.91674e+00 438 2015 6 5.28679e+00 1.37896e+00 250 2015 7 4.95163e+00 2.31032e+00 128 2015 8 1.41156e+01 8.41416e+00 220 2015 9 1.04419e+01 3.38390e+00 206 2015 10 4.32033e+00 1.75891e+00 653 2015 11 7.66568e+00 4.08192e+00 672 2015 12 3.80061e+00 2.06077e+00 530 2016 1 3.34948e+00 1.54708e+00 359 2016 2 7.37086e+00 6.83580e+00 1016 2016 3 7.92494e+00 5.15124e+00 681 2016 4 5.87017e+00 3.22647e+00 371 2016 5 5.61283e+00 2.06651e+00 695 2016 6 3.30161e+00 8.87134e-01 512 2016 7 5.16169e+00 2.22502e+00 685 2016 8 6.07161e+00 3.25755e+00 467 2016 9 8.91601e+00 6.05321e+00 627 2016 10 5.72752e+00 3.33346e+00 689 2016 11 2.46687e+00 2.82647e+00 880 2016 12 3.02487e+00 1.13200e+00 766 2017 1 3.15171e+00 2.30146e+00 562 2017 2 5.15295e+00 2.50801e+00 936 2017 3 4.34468e+00 2.19112e+00 816 2017 4 3.07455e+00 8.67439e-01 727 2017 5 2.82035e+00 9.43401e-01 402 2017 6 3.18599e+00 8.72932e-01 191 2017 7 6.80515e+00 2.30049e+00 144 2017 8 7.93775e+00 5.21170e+00 578 2017 9 5.45864e+00 4.53552e+00 357 2017 10 9.59600e+00 4.37610e+00 251 2017 11 5.16293e+00 3.38945e+00 1222 2017 12 3.25567e+00 1.33130e+00 704 2018 1 3.33275e+00 1.68209e+00 572 2018 2 7.31061e+00 4.60471e+00 632 2018 3 4.81560e+00 2.69681e+00 709 2018 4 4.22062e+00 1.76399e+00 525 2018 5 4.31766e+00 2.00797e+00 446 2018 6 4.25234e+00 8.33172e-01 255 2018 7 1.13242e+01 5.55702e+00 38 2018 8 1.58235e+01 1.06455e+01 97 2018 9 1.02163e+01 5.71787e+00 668 2018 10 5.96140e+00 1.84933e+00 887 2018 11 4.33273e+00 2.03357e+00 268 2018 12 1.11818e+01 7.98451e+00 663 2019 1 1.54857e+01 9.42814e+00 304 2019 2 3.07519e+01 7.90058e+00 31 2019 3 8.95235e+00 7.14173e+00 483 2019 4 6.56703e+00 2.70760e+00 425 2019 5 4.76447e+00 9.55350e-01 687 2019 6 4.03373e+00 2.69006e-01 53 2019 7 3.91912e+00 2.11019e+00 128 2019 8 5.62627e+00 8.71606e-01 167 2019 9 4.71973e+00 1.73012e+00 553 2019 10 5.48773e+00 1.18521e+00 542 2019 11 3.22022e+00 1.14936e+00 878 2019 12 5.55332e+00 3.67803e+00 448 2020 1 3.81928e+00 1.89408e+00 578 2020 2 3.61027e+00 1.47895e+00 511 2020 3 8.38455e+00 7.24434e+00 688 2020 4 5.40536e+00 2.33894e+00 349 2020 5 5.83194e+00 4.98688e+00 822 2020 6 5.30450e+00 2.00766e+00 358 2020 7 8.59651e+00 7.29309e+00 188 2020 8 8.99268e+00 2.64089e+00 211 2020 9 8.54100e+00 3.50123e+00 263 2020 10 7.56031e+00 3.91213e+00 764 2020 11 6.04798e+00 2.08912e+00 746 2020 12 3.42615e+00 1.77306e+00 669 2021 1 4.92121e+00 2.83225e+00 233 2021 2 9.04625e+00 5.81067e+00 433 2021 3 8.28362e+00 6.16292e+00 436 2021 4 9.05759e+00 3.94091e+00 661 2021 5 6.58049e+00 4.01624e+00 553 2021 6 4.90116e+00 7.88541e-01 122 2021 7 6.39970e+00 2.62798e+00 72 2021 8 9.04923e+00 6.76966e+00 137 2021 9 2.41674e+01 1.30728e+01 242 2021 10 9.62461e+00 6.27247e+00 456 2021 11 4.93468e+00 1.76081e+00 952 2021 12 5.45489e+00 2.23281e+00 721 2022 1 6.03453e+00 2.41581e+00 666 2022 2 4.90440e+00 2.83350e+00 876 2022 3 4.49988e+00 2.54382e+00 790 2022 4 1.27534e+01 2.28786e+00 64 2022 5 9.20921e+00 5.68102e+00 313 2022 6 5.93885e+00 2.94982e+00 312 2022 7 5.98293e+00 2.15934e+00 319 2022 8 1.22717e+01 8.29851e+00 368 2022 9 7.14466e+00 6.99764e+00 282 2022 10 2.29670e+00 1.36083e+00 1151 2022 11 4.32770e+00 2.98091e+00 427 2022 12 4.45899e+00 3.09632e+00 975 2023 1 3.12981e+00 1.29381e+00 873 2023 2 3.34177e+00 1.30618e+00 576 2023 3 8.96320e+00 8.82743e+00 688 2023 4 6.66579e+00 2.38048e+00 388 2023 5 4.68013e+00 2.19372e+00 379 2023 6 3.27085e+00 1.55234e+00 253 2023 7 9.21921e+00 9.20079e+00 452 2023 8 1.10659e+01 9.36891e+00 253 2023 9 9.41353e+00 7.90557e+00 429 2023 10 5.28795e+00 2.88469e+00 601 2023 11 3.80613e+00 1.80915e+00 704 2023 12 6.42156e+00 3.42858e+00 284 2024 1 1.70922e+01 1.07687e+01 419 2024 2 1.26086e+01 7.45759e+00 635 2024 3 1.28378e+01 7.52088e+00 495 2024 4 nan nan 0