condition mean min max ZT0-3 35.550000000000004 35.550000000000004 35.550000000000004 ZT4-7 5.9 5.9 5.9 ZT8-11 40.75 40.75 40.75 ZT12-15 42.35 42.35 42.35 ZT16-19 51.599999999999994 51.599999999999994 51.599999999999994 ZT20-23 22.6 22.6 22.6