condition mean min max ZT0-3 85.65 85.65 85.65 ZT4-7 52.1 52.1 52.1 ZT8-11 51.2 51.2 51.2 ZT12-15 81.85 81.85 81.85 ZT16-19 76.15 76.15 76.15 ZT20-23 107.1 107.1 107.1