condition mean min max ZT0-3 642.2739999999999 642.2739999999999 642.2739999999999 ZT4-7 735.393 735.393 735.393 ZT8-11 652.7335 652.7335 652.7335 ZT12-15 600.792 600.792 600.792 ZT16-19 496.77 496.77 496.77 ZT20-23 579.6375 579.6375 579.6375