condition mean min max ZT0-3 754.8 754.8 754.8 ZT4-7 549.8 549.8 549.8 ZT8-11 683.5 683.5 683.5 ZT12-15 644.5 644.5 644.5 ZT16-19 698.05 698.05 698.05 ZT20-23 712.55 712.55 712.55