condition mean min max ZT0-3 34.2 34.2 34.2 ZT4-7 84.0 84.0 84.0 ZT8-11 98.15 98.15 98.15 ZT12-15 106.5 106.5 106.5 ZT16-19 82.05000000000001 82.05000000000001 82.05000000000001 ZT20-23 106.85 106.85 106.85