condition mean min max ZT0-3 475.85 475.85 475.85 ZT4-7 586.0 586.0 586.0 ZT8-11 509.6 509.6 509.6 ZT12-15 541.15 541.15 541.15 ZT16-19 594.7 594.7 594.7 ZT20-23 579.95 579.95 579.95