condition mean min max ZT0-3 25.489495 25.489495 25.489495 ZT4-7 159.26173899999998 159.26173899999998 159.26173899999998 ZT8-11 13.374879 13.374879 13.374879 ZT12-15 19.655926 19.655926 19.655926 ZT16-19 14.0569755 14.0569755 14.0569755 ZT20-23 13.740119 13.740119 13.740119