condition mean min max ZT0-3 37.0 37.0 37.0 ZT4-7 34.1 34.1 34.1 ZT8-11 40.05 40.05 40.05 ZT12-15 44.55 44.55 44.55 ZT16-19 39.25 39.25 39.25 ZT20-23 49.95 49.95 49.95