condition mean min max ZT0-3 3530.75 3530.75 3530.75 ZT4-7 4515.0 4515.0 4515.0 ZT8-11 5001.95 5001.95 5001.95 ZT12-15 4550.25 4550.25 4550.25 ZT16-19 4601.15 4601.15 4601.15 ZT20-23 3920.0 3920.0 3920.0