condition mean min max ZT0-3 154.55 154.55 154.55 ZT4-7 183.2 183.2 183.2 ZT8-11 193.6 193.6 193.6 ZT12-15 173.05 173.05 173.05 ZT16-19 109.35 109.35 109.35 ZT20-23 122.25 122.25 122.25