condition mean min max ZT0-3 10.15 10.15 10.15 ZT4-7 24.5 24.5 24.5 ZT8-11 123.35 123.35 123.35 ZT12-15 113.3 113.3 113.3 ZT16-19 20.05 20.05 20.05 ZT20-23 18.2 18.2 18.2