condition mean min max ZT0-3 145.95 145.95 145.95 ZT4-7 137.5 137.5 137.5 ZT8-11 120.95 120.95 120.95 ZT12-15 96.9 96.9 96.9 ZT16-19 147.5 147.5 147.5 ZT20-23 185.55 185.55 185.55