condition mean min max ZT0-3 52.599999999999994 52.599999999999994 52.599999999999994 ZT4-7 8.4 8.4 8.4 ZT8-11 17.25 17.25 17.25 ZT12-15 32.35 32.35 32.35 ZT16-19 104.65 104.65 104.65 ZT20-23 152.05 152.05 152.05