condition mean min max ZT0-3 32.05 32.05 32.05 ZT4-7 34.2 34.2 34.2 ZT8-11 39.65 39.65 39.65 ZT12-15 37.45 37.45 37.45 ZT16-19 12.35 12.35 12.35 ZT20-23 40.7 40.7 40.7