condition mean min max ZT0-3 58.65 58.65 58.65 ZT4-7 138.0 138.0 138.0 ZT8-11 91.85 91.85 91.85 ZT12-15 138.85000000000002 138.85000000000002 138.85000000000002 ZT16-19 107.65 107.65 107.65 ZT20-23 40.2 40.2 40.2