condition mean min max ZT0-3 418.15 418.15 418.15 ZT4-7 267.7 267.7 267.7 ZT8-11 315.45 315.45 315.45 ZT12-15 375.55 375.55 375.55 ZT16-19 534.95 534.95 534.95 ZT20-23 597.2 597.2 597.2