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 1.25978e+01 1.97425e+00 763 2002 8 1.05123e+01 8.29632e-01 956 2002 9 7.23095e+00 2.42854e+00 892 2002 10 5.74491e+00 1.75824e+00 683 2002 11 4.95965e+00 5.67576e-01 890 2002 12 5.28576e+00 3.39357e-01 307 2003 1 5.84402e+00 1.21176e+00 879 2003 2 5.86880e+00 7.08091e-01 510 2003 3 6.61214e+00 7.56628e-01 512 2003 4 1.03158e+01 2.17622e+00 309 2003 5 1.03891e+01 1.96664e+00 136 2003 6 1.19250e+01 1.52289e+00 552 2003 7 1.31312e+01 1.65279e+00 481 2003 8 1.17651e+01 1.52008e+00 800 2003 9 6.24262e+00 2.43998e+00 1159 2003 10 3.84698e+00 1.45328e+00 676 2003 11 5.07864e+00 5.43007e-01 840 2003 12 4.99458e+00 5.94318e-01 452 2004 1 5.89090e+00 8.89870e-01 484 2004 2 4.61741e+00 7.17049e-01 624 2004 3 6.92273e+00 1.02641e+00 860 2004 4 1.00978e+01 1.10976e+00 323 2004 5 8.80639e+00 1.68900e+00 320 2004 6 8.71713e+00 2.72696e+00 824 2004 7 1.16556e+01 2.54087e+00 514 2004 8 1.05039e+01 1.82294e+00 845 2004 9 6.83627e+00 2.54280e+00 572 2004 10 5.18909e+00 1.80200e+00 670 2004 11 3.83238e+00 1.10352e+00 307 2004 12 4.61832e+00 7.71014e-01 622 2005 1 5.06326e+00 1.60061e+00 665 2005 2 5.51033e+00 8.98526e-01 512 2005 3 8.42035e+00 1.78011e+00 672 2005 4 9.92739e+00 2.12786e+00 472 2005 5 1.06564e+01 8.06996e-01 384 2005 6 8.46860e+00 2.78470e+00 566 2005 7 1.06138e+01 2.27666e+00 163 2005 8 1.04219e+01 3.23331e+00 683 2005 9 6.82123e+00 1.81601e+00 884 2005 10 4.67080e+00 1.45456e+00 815 2005 11 4.94854e+00 7.87096e-01 562 2005 12 4.82716e+00 1.07619e+00 809 2006 1 5.28546e+00 8.32060e-01 440 2006 2 6.42550e+00 1.09691e+00 510 2006 3 7.30833e+00 1.44017e+00 833 2006 4 8.21733e+00 1.74859e+00 364 2006 5 6.68555e+00 1.89114e+00 234 2006 6 1.09156e+01 2.68156e+00 972 2006 7 1.14380e+01 2.30375e+00 268 2006 8 9.29795e+00 1.44363e+00 20 2006 9 7.30019e+00 2.86741e+00 976 2006 10 5.28015e+00 1.47134e+00 793 2006 11 4.87324e+00 6.03893e-01 775 2006 12 4.91701e+00 4.35448e-01 602 2007 1 4.66003e+00 8.39515e-01 720 2007 2 5.41361e+00 1.01487e+00 957 2007 3 6.63094e+00 9.44903e-01 573 2007 4 7.00975e+00 1.18913e+00 138 2007 5 6.51947e+00 1.40529e+00 261 2007 6 8.19915e+00 1.34135e+00 516 2007 7 1.10247e+01 6.67209e-01 196 2007 8 1.23478e+01 1.26651e+00 357 2007 9 7.90963e+00 2.52368e+00 807 2007 10 3.96942e+00 1.40195e+00 736 2007 11 4.71619e+00 6.10349e-01 944 2007 12 4.66899e+00 7.83592e-01 593 2008 1 4.50223e+00 1.30803e+00 339 2008 2 5.81385e+00 6.41877e-01 465 2008 3 7.87094e+00 1.84941e+00 809 2008 4 1.20047e+01 1.70642e+00 107 2008 5 6.25576e+00 3.06956e-01 8 2008 6 5.49726e+00 1.54524e+00 170 2008 7 8.26953e+00 2.24897e+00 189 2008 8 7.70301e+00 2.42583e+00 149 2008 9 6.45993e+00 1.50957e+00 205 2008 10 4.03431e+00 9.37498e-01 481 2008 11 4.54204e+00 6.23598e-01 546 2008 12 4.70602e+00 5.12396e-01 787 2009 1 5.09228e+00 9.18639e-01 765 2009 2 7.18801e+00 6.64823e-01 321 2009 3 7.70061e+00 1.12981e+00 469 2009 4 7.29340e+00 1.15242e+00 96 2009 5 7.46229e+00 2.24444e+00 314 2009 6 1.09065e+01 2.53516e+00 203 2009 7 1.14552e+01 1.47038e+00 170 2009 8 1.06990e+01 1.38341e+00 326 2009 9 8.11978e+00 2.16022e+00 324 2009 10 3.71056e+00 1.18594e+00 277 2009 11 5.56516e+00 1.56324e+00 438 2009 12 5.22061e+00 2.86142e-01 508 2010 1 5.61967e+00 3.13426e-01 744 2010 2 6.63519e+00 9.69838e-01 462 2010 3 1.01841e+01 1.18048e+00 393 2010 4 8.53728e+00 8.98454e-01 256 2010 5 7.11254e+00 8.69594e-01 387 2010 6 1.23750e+01 2.52648e+00 287 2010 7 1.21729e+01 2.52885e+00 573 2010 8 1.31766e+01 1.12118e+00 146 2010 9 8.30097e+00 3.35954e+00 603 2010 10 3.90185e+00 1.13608e+00 795 2010 11 4.72034e+00 5.00510e-01 1207 2010 12 4.19551e+00 9.79590e-01 897 2011 1 5.01484e+00 6.77566e-01 496 2011 2 5.22998e+00 3.66150e-01 425 2011 3 6.37011e+00 1.05991e+00 693 2011 4 5.58991e+00 1.21273e+00 128 2011 5 8.87170e+00 4.58016e+00 258 2011 6 1.15047e+01 1.50737e+00 421 2011 7 1.31891e+01 1.61315e+00 383 2011 8 1.19927e+01 1.17947e+00 814 2011 9 7.82731e+00 2.13176e+00 851 2011 10 4.47923e+00 6.76344e-01 920 2011 11 4.50604e+00 5.52114e-01 574 2011 12 4.59178e+00 9.31472e-01 1026 2012 1 6.08285e+00 9.51925e-01 832 2012 2 6.02330e+00 8.07438e-01 704 2012 3 6.40400e+00 8.84539e-01 473 2012 4 8.38712e+00 4.83733e-01 187 2012 5 nan nan 0 2012 6 1.35118e+01 5.90935e-01 162 2012 7 1.21628e+01 2.61885e+00 187 2012 8 1.16800e+01 1.48622e+00 406 2012 9 7.89766e+00 2.46448e+00 513 2012 10 6.81199e+00 2.17937e+00 791 2012 11 5.06964e+00 1.00013e+00 446 2012 12 5.74953e+00 5.71793e-01 283 2013 1 5.52323e+00 1.29014e+00 644 2013 2 6.70257e+00 1.29490e+00 593 2013 3 8.46044e+00 1.12084e+00 450 2013 4 1.05775e+01 1.07889e+00 220 2013 5 1.13755e+01 6.74832e-01 320 2013 6 1.39388e+01 1.81656e+00 638 2013 7 1.16674e+01 2.08582e+00 648 2013 8 1.14737e+01 1.21304e+00 689 2013 9 8.34924e+00 2.06832e+00 941 2013 10 5.37177e+00 1.31262e+00 1152 2013 11 5.22808e+00 7.60780e-01 623 2013 12 5.45475e+00 7.64394e-01 995 2014 1 6.69863e+00 1.24497e+00 617 2014 2 7.09101e+00 9.41943e-01 774 2014 3 9.41140e+00 1.15147e+00 654 2014 4 6.59591e+00 2.35312e+00 420 2014 5 1.00895e+01 2.26868e+00 448 2014 6 1.05524e+01 1.69540e+00 750 2014 7 1.17301e+01 1.40511e+00 832 2014 8 1.17235e+01 1.39199e+00 470 2014 9 9.82551e+00 1.72458e+00 1138 2014 10 5.64806e+00 1.83749e+00 971 2014 11 4.94909e+00 5.76105e-01 919 2014 12 6.32249e+00 1.04669e+00 960 2015 1 5.75975e+00 6.04689e-01 683 2015 2 7.56101e+00 6.95474e-01 512 2015 3 9.38381e+00 6.51393e-01 621 2015 4 7.87914e+00 3.04431e+00 192 2015 5 7.20214e+00 2.55127e+00 259 2015 6 1.15179e+01 1.67344e+00 679 2015 7 7.78924e+00 7.07530e-01 161 2015 8 1.29551e+01 1.10528e+00 479 2015 9 6.91901e+00 2.08020e+00 461 2015 10 4.34167e+00 9.46494e-01 244 2015 11 5.10525e+00 8.13782e-01 645 2015 12 4.80263e+00 5.99686e-01 721 2016 1 5.00469e+00 3.56953e-01 884 2016 2 6.16843e+00 8.72858e-01 1188 2016 3 7.38494e+00 1.62530e+00 534 2016 4 1.06293e+01 2.00676e+00 700 2016 5 8.80466e+00 2.36124e+00 642 2016 6 1.08187e+01 2.66800e+00 456 2016 7 1.30987e+01 1.49472e+00 431 2016 8 1.29871e+01 1.52131e+00 800 2016 9 6.71010e+00 2.59945e+00 672 2016 10 4.40361e+00 8.29674e-01 935 2016 11 4.69582e+00 6.73689e-01 570 2016 12 4.86453e+00 1.00588e+00 582 2017 1 6.08049e+00 5.43359e-01 671 2017 2 5.85438e+00 6.71183e-01 617 2017 3 7.58709e+00 1.50790e+00 583 2017 4 1.10093e+01 5.43990e-01 217 2017 5 7.62767e+00 3.27307e+00 260 2017 6 1.33303e+01 1.13533e+00 896 2017 7 1.28708e+01 1.18070e+00 375 2017 8 1.21292e+01 1.10506e+00 500 2017 9 6.49512e+00 2.23813e+00 467 2017 10 4.00439e+00 9.62252e-01 759 2017 11 4.58185e+00 4.78552e-01 628 2017 12 4.41565e+00 6.99055e-01 753 2018 1 5.33753e+00 8.12298e-01 669 2018 2 5.54985e+00 5.56437e-01 576 2018 3 5.94774e+00 1.10354e+00 717 2018 4 6.13627e+00 2.59271e+00 283 2018 5 8.27092e+00 2.72865e+00 395 2018 6 7.60721e+00 2.44085e+00 677 2018 7 1.02367e+01 2.00162e+00 674 2018 8 8.03126e+00 2.62737e+00 799 2018 9 8.06944e+00 1.41304e+00 807 2018 10 7.14738e+00 2.72565e+00 240 2018 11 5.43617e+00 4.78458e-01 319 2018 12 5.01071e+00 9.91225e-01 584 2019 1 5.20198e+00 6.62127e-01 384 2019 2 6.54906e+00 6.45418e-01 643 2019 3 6.74776e+00 7.72221e-01 772 2019 4 6.41323e+00 1.02838e+00 632 2019 5 7.01564e+00 2.20808e+00 609 2019 6 1.17253e+01 2.01664e+00 968 2019 7 1.16507e+01 1.22626e+00 815 2019 8 1.16923e+01 1.45579e+00 739 2019 9 8.17740e+00 1.51867e+00 1131 2019 10 5.66012e+00 1.57616e+00 727 2019 11 4.50326e+00 5.27942e-01 650 2019 12 4.68790e+00 6.36774e-01 575 2020 1 5.65002e+00 5.46300e-01 722 2020 2 5.30781e+00 8.54163e-01 670 2020 3 7.73424e+00 9.97102e-01 761 2020 4 1.04503e+01 1.91009e+00 321 2020 5 1.08992e+01 1.96811e+00 378 2020 6 1.16136e+01 2.47935e+00 752 2020 7 1.15578e+01 1.68571e+00 643 2020 8 9.08014e+00 1.57607e+00 495 2020 9 5.92780e+00 1.66265e+00 807 2020 10 5.22408e+00 1.49187e+00 1405 2020 11 4.37560e+00 4.78080e-01 451 2020 12 4.09143e+00 5.61685e-01 472 2021 1 4.50875e+00 5.27974e-01 581 2021 2 5.85035e+00 6.30489e-01 831 2021 3 6.07402e+00 8.18344e-01 493 2021 4 9.01533e+00 3.29604e-01 320 2021 5 1.08217e+01 1.81623e+00 408 2021 6 1.13736e+01 2.25239e+00 691 2021 7 1.11062e+01 1.34896e+00 851 2021 8 1.10917e+01 1.65141e+00 683 2021 9 5.23285e+00 1.47843e+00 980 2021 10 4.79085e+00 1.08675e+00 1333 2021 11 4.26385e+00 4.87168e-01 777 2021 12 4.24339e+00 5.71677e-01 508 2022 1 5.50232e+00 7.78664e-01 619 2022 2 5.79842e+00 8.84368e-01 941 2022 3 6.06733e+00 1.16585e+00 309 2022 4 9.02627e+00 2.48275e-01 64 2022 5 8.99135e+00 2.28373e+00 384 2022 6 1.27902e+01 1.28722e+00 436 2022 7 1.26428e+01 7.66024e-01 315 2022 8 1.11169e+01 1.26061e+00 396 2022 9 6.80894e+00 2.83882e+00 829 2022 10 5.73945e+00 1.07831e+00 732 2022 11 4.74550e+00 7.71804e-01 350 2022 12 5.91160e+00 8.16755e-01 666 2023 1 6.50675e+00 1.13969e+00 321 2023 2 7.27126e+00 1.38005e+00 636 2023 3 9.40165e+00 9.15455e-01 852 2023 4 1.08100e+01 1.36847e+00 801 2023 5 9.45970e+00 8.47632e-01 448 2023 6 1.00598e+01 1.47053e+00 999 2023 7 1.08720e+01 1.54607e+00 808 2023 8 9.37472e+00 6.75623e-01 467 2023 9 6.75584e+00 1.64888e+00 870 2023 10 5.23255e+00 8.45867e-01 879 2023 11 4.38310e+00 7.46152e-01 523 2023 12 4.58530e+00 6.75015e-01 692 2024 1 5.28774e+00 5.56122e-01 1035 2024 2 7.78045e+00 1.05318e+00 960 2024 3 8.46805e+00 1.60308e+00 699 2024 4 1.08637e+01 6.11465e-01 128