condition mean min max ZT0-3 26.0 26.0 26.0 ZT4-7 7.0 7.0 7.0 ZT8-11 26.45 26.45 26.45 ZT12-15 25.95 25.95 25.95 ZT16-19 35.0 35.0 35.0 ZT20-23 21.400000000000002 21.400000000000002 21.400000000000002