condition mean min max ZT0-3 529.85 529.85 529.85 ZT4-7 278.1 278.1 278.1 ZT8-11 281.6 281.6 281.6 ZT12-15 407.5 407.5 407.5 ZT16-19 496.05 496.05 496.05 ZT20-23 531.0 531.0 531.0