condition mean min max ZT0-3 47.85 47.85 47.85 ZT4-7 29.8 29.8 29.8 ZT8-11 94.6 94.6 94.6 ZT12-15 30.05 30.05 30.05 ZT16-19 39.65 39.65 39.65 ZT20-23 43.6 43.6 43.6