condition mean min max ZT0-3 429.25 429.25 429.25 ZT4-7 417.8 417.8 417.8 ZT8-11 452.85 452.85 452.85 ZT12-15 549.2 549.2 549.2 ZT16-19 391.75 391.75 391.75 ZT20-23 426.65 426.65 426.65