condition mean min max ZT0-3 844.75 844.75 844.75 ZT4-7 150.7 150.7 150.7 ZT8-11 154.2 154.2 154.2 ZT12-15 549.8 549.8 549.8 ZT16-19 880.5 880.5 880.5 ZT20-23 1058.85 1058.85 1058.85