condition mean min max ZT0-3 47.594049999999996 47.594049999999996 47.594049999999996 ZT4-7 36.96605 36.96605 36.96605 ZT8-11 22.9208 22.9208 22.9208 ZT12-15 23.3626 23.3626 23.3626 ZT16-19 37.62495 37.62495 37.62495 ZT20-23 44.379149999999996 44.379149999999996 44.379149999999996