condition mean min max ZT0-3 44.95 44.95 44.95 ZT4-7 39.4 39.4 39.4 ZT8-11 42.25 42.25 42.25 ZT12-15 47.35 47.35 47.35 ZT16-19 45.85 45.85 45.85 ZT20-23 42.7 42.7 42.7