condition mean min max ZT0-3 25.0675 25.0675 25.0675 ZT4-7 29.20475 29.20475 29.20475 ZT8-11 26.281750000000002 26.281750000000002 26.281750000000002 ZT12-15 22.11205 22.11205 22.11205 ZT16-19 21.7527 21.7527 21.7527 ZT20-23 20.783749999999998 20.783749999999998 20.783749999999998