condition mean min max ZT0-3 180.55 180.55 180.55 ZT4-7 151.1 151.1 151.1 ZT8-11 173.5 173.5 173.5 ZT12-15 218.85 218.85 218.85 ZT16-19 185.05 185.05 185.05 ZT20-23 133.05 133.05 133.05