condition mean min max ZT0-3 159.63218333333333 87.02055 202.10250000000002 ZT4-7 44.46985 44.46985 44.46985 ZT8-11 32.031 32.031 32.031 ZT12-15 40.1984 37.4353 42.9615 ZT16-19 29.8627 29.8627 29.8627 ZT20-23 77.0226 77.0226 77.0226