condition mean min max ZT0-3 24.8321 24.8321 24.8321 ZT4-7 21.661450000000002 21.661450000000002 21.661450000000002 ZT8-11 12.60005 12.60005 12.60005 ZT12-15 13.9235 13.9235 13.9235 ZT16-19 19.18055 19.18055 19.18055 ZT20-23 24.11375 24.11375 24.11375