condition mean min max ZT0-3 134.0 134.0 134.0 ZT4-7 237.0 237.0 237.0 ZT8-11 203.75 203.75 203.75 ZT12-15 150.2 150.2 150.2 ZT16-19 150.7 150.7 150.7 ZT20-23 132.5 132.5 132.5