condition mean min max ZT0-3 124.85 124.85 124.85 ZT4-7 94.6 94.6 94.6 ZT8-11 116.55 116.55 116.55 ZT12-15 154.2 154.2 154.2 ZT16-19 143.45 143.45 143.45 ZT20-23 138.65 138.65 138.65