condition mean min max ZT0-3 144.5 144.5 144.5 ZT4-7 130.0 130.0 130.0 ZT8-11 225.7 225.7 225.7 ZT12-15 192.85 192.85 192.85 ZT16-19 153.5 153.5 153.5 ZT20-23 179.8 179.8 179.8