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 9.55562e+00 1.83657e+00 675 2002 8 8.08850e+00 1.36132e+00 539 2002 9 6.61194e+00 1.79655e+00 574 2002 10 4.79662e+00 1.52438e+00 681 2002 11 3.63823e+00 4.67946e-01 919 2002 12 4.77739e+00 6.75216e-01 496 2003 1 4.71999e+00 9.02491e-01 697 2003 2 4.20854e+00 4.28903e-01 352 2003 3 4.86070e+00 5.66365e-01 538 2003 4 6.68965e+00 1.58307e+00 361 2003 5 7.95226e+00 2.19565e+00 186 2003 6 7.28832e+00 2.32167e+00 493 2003 7 7.51248e+00 2.35124e+00 284 2003 8 5.48426e+00 2.95847e+00 364 2003 9 4.73353e+00 1.39316e+00 771 2003 10 3.99404e+00 1.05117e+00 595 2003 11 3.81114e+00 7.55581e-01 745 2003 12 3.53257e+00 4.65433e-01 355 2004 1 3.21723e+00 4.50430e-01 470 2004 2 3.41847e+00 5.57886e-01 616 2004 3 5.05540e+00 1.09233e+00 941 2004 4 5.94264e+00 1.12451e+00 225 2004 5 8.15331e+00 1.33869e+00 436 2004 6 9.17398e+00 1.79869e+00 516 2004 7 9.09276e+00 3.13111e+00 377 2004 8 5.85619e+00 2.39120e+00 506 2004 9 5.20144e+00 1.74222e+00 598 2004 10 5.26314e+00 1.99498e+00 723 2004 11 3.64296e+00 4.96135e-01 343 2004 12 3.66820e+00 6.37182e-01 429 2005 1 3.72186e+00 7.12794e-01 674 2005 2 4.05660e+00 5.77661e-01 622 2005 3 6.39072e+00 9.84849e-01 611 2005 4 6.37940e+00 2.29151e+00 351 2005 5 9.08228e+00 1.27470e+00 264 2005 6 7.56239e+00 2.32483e+00 758 2005 7 9.40283e+00 1.23392e+00 128 2005 8 6.26090e+00 2.47338e+00 401 2005 9 4.39337e+00 1.78947e+00 806 2005 10 4.48484e+00 1.10124e+00 853 2005 11 3.81737e+00 8.20718e-01 550 2005 12 3.65407e+00 7.50253e-01 688 2006 1 3.30479e+00 6.54261e-01 531 2006 2 4.22093e+00 5.34682e-01 280 2006 3 4.84951e+00 7.74483e-01 742 2006 4 8.41707e+00 2.14949e+00 553 2006 5 7.82991e+00 1.40059e+00 304 2006 6 1.03392e+01 2.65256e+00 674 2006 7 8.43061e+00 1.45614e+00 191 2006 8 4.37593e+00 1.02738e+00 60 2006 9 5.11404e+00 1.25372e+00 774 2006 10 4.18506e+00 1.35527e+00 904 2006 11 3.86888e+00 5.64257e-01 671 2006 12 3.56456e+00 7.48838e-01 360 2007 1 4.05539e+00 4.72306e-01 672 2007 2 4.21657e+00 8.12679e-01 750 2007 3 5.03570e+00 1.03498e+00 631 2007 4 4.95425e+00 1.36819e+00 97 2007 5 7.50039e+00 8.42290e-01 160 2007 6 7.91541e+00 2.81075e+00 361 2007 7 1.26010e+01 5.38159e+00 55 2007 8 5.95840e+00 1.98695e+00 502 2007 9 4.17892e+00 1.96307e+00 769 2007 10 3.68497e+00 1.22722e+00 576 2007 11 3.97613e+00 7.91003e-01 1011 2007 12 3.90990e+00 5.93758e-01 513 2008 1 4.04032e+00 5.22994e-01 354 2008 2 4.18443e+00 5.91873e-01 667 2008 3 5.74415e+00 1.25211e+00 678 2008 4 5.89138e+00 1.48778e+00 238 2008 5 5.47892e+00 5.57803e-01 215 2008 6 2.57743e+00 7.34987e-01 8 2008 7 6.26905e+00 3.85553e+00 108 2008 8 5.52549e+00 2.33668e+00 102 2008 9 3.73218e+00 1.35750e+00 444 2008 10 3.27681e+00 8.66375e-01 557 2008 11 3.35319e+00 6.21767e-01 761 2008 12 3.71241e+00 8.00415e-01 988 2009 1 4.03619e+00 7.90477e-01 810 2009 2 4.45327e+00 9.44021e-01 241 2009 3 3.64643e+00 6.19443e-01 221 2009 4 7.93755e+00 7.83158e-01 256 2009 5 7.69664e+00 1.17570e+00 314 2009 6 8.65768e+00 1.34157e+00 88 2009 7 nan nan 0 2009 8 7.87384e+00 2.98831e+00 191 2009 9 5.42177e+00 2.44974e+00 436 2009 10 3.24626e+00 1.09813e+00 395 2009 11 3.41829e+00 5.90285e-01 674 2009 12 3.73194e+00 4.64786e-01 528 2010 1 4.06400e+00 7.11842e-01 563 2010 2 4.86185e+00 5.16663e-01 517 2010 3 5.70356e+00 1.96703e+00 522 2010 4 8.63874e+00 8.30581e-01 136 2010 5 8.58925e+00 1.67286e+00 296 2010 6 8.19901e+00 2.85503e+00 143 2010 7 1.03379e+01 3.53278e+00 348 2010 8 9.02464e+00 1.91398e+00 255 2010 9 4.05297e+00 1.98981e+00 298 2010 10 4.64729e+00 1.36144e+00 785 2010 11 4.02313e+00 6.42248e-01 1262 2010 12 3.81376e+00 9.31202e-01 818 2011 1 3.39088e+00 7.84477e-01 658 2011 2 4.21961e+00 4.02807e-01 345 2011 3 5.52811e+00 1.12210e+00 600 2011 4 7.66358e+00 1.51009e+00 243 2011 5 7.59268e+00 1.15577e+00 402 2011 6 8.42190e+00 1.05557e+00 266 2011 7 8.83181e+00 1.74730e+00 311 2011 8 9.14983e+00 8.26662e-01 294 2011 9 5.88994e+00 1.92509e+00 675 2011 10 4.15402e+00 1.19505e+00 853 2011 11 3.53860e+00 4.91605e-01 482 2011 12 4.40727e+00 6.40268e-01 1033 2012 1 5.12087e+00 8.89187e-01 738 2012 2 4.88005e+00 7.45487e-01 577 2012 3 5.58948e+00 8.33434e-01 502 2012 4 6.00151e+00 1.30137e+00 208 2012 5 1.22651e+01 2.35663e+00 57 2012 6 7.46617e+00 1.96863e+00 247 2012 7 7.95756e+00 2.53335e+00 497 2012 8 9.64089e+00 1.96077e+00 338 2012 9 6.19996e+00 1.66876e+00 601 2012 10 6.10744e+00 1.61233e+00 505 2012 11 4.46723e+00 8.70594e-01 621 2012 12 4.66066e+00 5.21012e-01 352 2013 1 4.27861e+00 9.37906e-01 608 2013 2 4.09029e+00 7.40973e-01 610 2013 3 5.38084e+00 8.14871e-01 370 2013 4 7.80346e+00 1.94976e+00 240 2013 5 7.69111e+00 2.29563e+00 288 2013 6 1.02242e+01 1.75779e+00 402 2013 7 9.95341e+00 2.51090e+00 407 2013 8 8.90523e+00 2.18332e+00 569 2013 9 6.34942e+00 1.89191e+00 684 2013 10 4.34739e+00 1.64623e+00 903 2013 11 3.91850e+00 5.17309e-01 577 2013 12 4.62128e+00 1.14076e+00 982 2014 1 4.35783e+00 7.16569e-01 709 2014 2 4.90730e+00 3.68611e-01 639 2014 3 5.90624e+00 1.37320e+00 680 2014 4 6.24366e+00 1.37162e+00 383 2014 5 7.53156e+00 9.56264e-01 250 2014 6 7.77977e+00 2.25616e+00 750 2014 7 6.71191e+00 1.83582e+00 476 2014 8 1.08500e+01 1.06325e+00 305 2014 9 6.67352e+00 2.19495e+00 1029 2014 10 4.33608e+00 1.04686e+00 979 2014 11 4.12851e+00 6.15382e-01 733 2014 12 4.29440e+00 5.05648e-01 991 2015 1 4.32119e+00 5.57790e-01 755 2015 2 4.46442e+00 5.09577e-01 446 2015 3 4.77925e+00 6.26091e-01 643 2015 4 6.51347e+00 1.00886e+00 241 2015 5 5.18262e+00 8.37533e-01 144 2015 6 7.92632e+00 2.48880e+00 411 2015 7 9.04807e+00 8.56925e-01 189 2015 8 9.61482e+00 1.94012e+00 635 2015 9 5.16424e+00 1.62742e+00 628 2015 10 4.60728e+00 1.16985e+00 541 2015 11 4.31143e+00 7.63719e-01 895 2015 12 4.35094e+00 5.08534e-01 739 2016 1 4.44842e+00 6.11718e-01 935 2016 2 5.17685e+00 9.43511e-01 1044 2016 3 7.33136e+00 1.12013e+00 464 2016 4 8.82953e+00 1.44851e+00 648 2016 5 6.86496e+00 1.67514e+00 466 2016 6 8.49637e+00 2.20134e+00 451 2016 7 9.02944e+00 2.19457e+00 348 2016 8 8.09438e+00 1.97941e+00 714 2016 9 5.59254e+00 1.69296e+00 769 2016 10 4.56140e+00 9.78549e-01 979 2016 11 3.78789e+00 5.83562e-01 660 2016 12 3.84578e+00 8.30968e-01 614 2017 1 4.08491e+00 7.60618e-01 556 2017 2 4.75098e+00 8.26790e-01 382 2017 3 5.93911e+00 1.11375e+00 639 2017 4 7.25976e+00 1.10906e+00 207 2017 5 8.72453e+00 1.81289e+00 241 2017 6 1.04796e+01 1.63325e+00 723 2017 7 8.92015e+00 1.61132e+00 411 2017 8 8.01353e+00 1.45526e+00 473 2017 9 5.01417e+00 1.56641e+00 593 2017 10 4.30852e+00 1.77421e+00 780 2017 11 4.24694e+00 6.88676e-01 762 2017 12 4.58460e+00 8.60966e-01 899 2018 1 4.47092e+00 8.65845e-01 753 2018 2 4.92923e+00 9.61259e-01 370 2018 3 5.90218e+00 1.38145e+00 767 2018 4 6.49681e+00 8.95429e-01 219 2018 5 8.89689e+00 1.84184e+00 325 2018 6 8.54677e+00 1.98195e+00 412 2018 7 1.00706e+01 1.82334e+00 304 2018 8 8.55689e+00 1.76731e+00 675 2018 9 6.01286e+00 1.32956e+00 624 2018 10 5.29636e+00 1.26333e+00 283 2018 11 4.02796e+00 8.50639e-01 363 2018 12 4.43425e+00 4.97595e-01 875 2019 1 4.55463e+00 3.28739e-01 377 2019 2 4.52068e+00 3.20025e-01 653 2019 3 5.45672e+00 5.57265e-01 727 2019 4 6.71902e+00 1.30729e+00 440 2019 5 7.33446e+00 1.39435e+00 594 2019 6 9.15006e+00 1.81302e+00 827 2019 7 7.70437e+00 1.15697e+00 631 2019 8 7.28039e+00 1.27166e+00 629 2019 9 5.28938e+00 1.23635e+00 991 2019 10 4.70458e+00 1.31028e+00 622 2019 11 3.96608e+00 7.62370e-01 628 2019 12 4.44046e+00 5.09844e-01 515 2020 1 4.29647e+00 4.33876e-01 496 2020 2 4.04883e+00 7.43644e-01 766 2020 3 5.18921e+00 8.32730e-01 626 2020 4 6.60272e+00 1.29435e+00 283 2020 5 7.42109e+00 1.99765e+00 543 2020 6 9.42289e+00 1.53171e+00 730 2020 7 8.50926e+00 3.32890e+00 578 2020 8 5.57595e+00 1.05847e+00 262 2020 9 6.90155e+00 1.49707e+00 845 2020 10 4.43195e+00 9.96785e-01 1350 2020 11 4.18321e+00 5.26052e-01 664 2020 12 3.85519e+00 7.82972e-01 657 2021 1 4.11716e+00 4.58717e-01 1007 2021 2 4.51918e+00 5.84942e-01 919 2021 3 5.22664e+00 8.26003e-01 412 2021 4 8.13170e+00 1.29288e+00 341 2021 5 8.12103e+00 2.84635e+00 645 2021 6 7.05852e+00 1.68307e+00 603 2021 7 8.82314e+00 1.64208e+00 536 2021 8 6.82646e+00 1.21419e+00 640 2021 9 5.81207e+00 1.21861e+00 931 2021 10 5.12126e+00 1.60931e+00 1136 2021 11 3.97830e+00 6.11942e-01 783 2021 12 4.11680e+00 5.13261e-01 412 2022 1 4.56440e+00 6.79787e-01 744 2022 2 5.10071e+00 8.05694e-01 889 2022 3 5.15295e+00 6.98820e-01 341 2022 4 8.01671e+00 6.15882e-01 65 2022 5 7.74817e+00 2.78042e+00 324 2022 6 1.09046e+01 1.29298e+00 447 2022 7 1.06369e+01 2.92096e+00 260 2022 8 6.69037e+00 1.81046e+00 381 2022 9 5.44088e+00 1.35476e+00 893 2022 10 5.15762e+00 1.08934e+00 943 2022 11 4.90453e+00 7.71142e-01 566 2022 12 4.54866e+00 8.28546e-01 697 2023 1 3.97195e+00 5.97228e-01 412 2023 2 4.49700e+00 1.32290e+00 610 2023 3 7.28632e+00 1.18257e+00 1024 2023 4 7.83383e+00 1.78243e+00 676 2023 5 7.29918e+00 1.25666e+00 321 2023 6 9.18645e+00 1.51053e+00 832 2023 7 7.86958e+00 1.47814e+00 748 2023 8 6.85083e+00 7.64336e-01 241 2023 9 6.38719e+00 1.15951e+00 844 2023 10 4.96945e+00 1.30477e+00 900 2023 11 4.25235e+00 7.64494e-01 596 2023 12 4.08299e+00 4.45176e-01 612 2024 1 4.84076e+00 5.68446e-01 757 2024 2 4.05012e+00 7.91819e-01 1122 2024 3 5.26271e+00 1.11732e+00 798 2024 4 8.90615e+00 1.16770e+00 197