condition mean min max ZT0-3 139.378 139.378 139.378 ZT4-7 116.20400000000001 116.20400000000001 116.20400000000001 ZT8-11 119.592 119.592 119.592 ZT12-15 116.9065 116.9065 116.9065 ZT16-19 133.666 133.666 133.666 ZT20-23 138.512 138.512 138.512