condition mean min max ZT0-3 266.3 266.3 266.3 ZT4-7 95.9 95.9 95.9 ZT8-11 52.25 52.25 52.25 ZT12-15 13.5 13.5 13.5 ZT16-19 35.8 35.8 35.8 ZT20-23 77.19999999999999 77.19999999999999 77.19999999999999