condition mean min max ZT0-3 42.05 42.05 42.05 ZT4-7 42.5 42.5 42.5 ZT8-11 43.6 43.6 43.6 ZT12-15 69.0 69.0 69.0 ZT16-19 39.4 39.4 39.4 ZT20-23 45.95 45.95 45.95