condition mean min max ZT0-3 120.85 120.85 120.85 ZT4-7 80.8 80.8 80.8 ZT8-11 70.35 70.35 70.35 ZT12-15 100.8 100.8 100.8 ZT16-19 135.95 135.95 135.95 ZT20-23 172.2 172.2 172.2