condition mean min max ZT0-3 464.35 464.35 464.35 ZT4-7 313.4 313.4 313.4 ZT8-11 268.75 268.75 268.75 ZT12-15 267.95 267.95 267.95 ZT16-19 472.9 472.9 472.9 ZT20-23 549.2 549.2 549.2