condition mean min max ZT0-3 421.85 421.85 421.85 ZT4-7 348.0 348.0 348.0 ZT8-11 256.75 256.75 256.75 ZT12-15 360.4 360.4 360.4 ZT16-19 374.15 374.15 374.15 ZT20-23 346.25 346.25 346.25