condition mean min max ZT0-3 3717.2 3717.2 3717.2 ZT4-7 4454.7 4454.7 4454.7 ZT8-11 5154.85 5154.85 5154.85 ZT12-15 7173.75 7173.75 7173.75 ZT16-19 6890.85 6890.85 6890.85 ZT20-23 5147.15 5147.15 5147.15