condition mean min max ZT0-3 27.257799999999996 23.4104 31.105199999999996 ZT4-7 25.3325 25.3325 25.3325 ZT8-11 18.46665 18.46665 18.46665 ZT12-15 0 0 0 ZT16-19 31.536250000000003 31.536250000000003 31.536250000000003 ZT20-23 32.0156 32.0156 32.0156