condition mean min max ZT0-3 29.9 29.9 29.9 ZT4-7 30.0 30.0 30.0 ZT8-11 41.15 41.15 41.15 ZT12-15 34.3 34.3 34.3 ZT16-19 38.6 38.6 38.6 ZT20-23 39.15 39.15 39.15