condition mean min max ZT0-3 768.7 768.7 768.7 ZT4-7 923.3 923.3 923.3 ZT8-11 928.1 928.1 928.1 ZT12-15 615.05 615.05 615.05 ZT16-19 563.0 563.0 563.0 ZT20-23 605.95 605.95 605.95