condition mean min max ZT0-3 38.15 38.15 38.15 ZT4-7 84.0 84.0 84.0 ZT8-11 32.9 32.9 32.9 ZT12-15 41.95 41.95 41.95 ZT16-19 30.3 30.3 30.3 ZT20-23 74.55 74.55 74.55