condition mean min max ZT0-3 648.2 648.2 648.2 ZT4-7 745.6 745.6 745.6 ZT8-11 1066.75 1066.75 1066.75 ZT12-15 870.85 870.85 870.85 ZT16-19 400.1 400.1 400.1 ZT20-23 356.15 356.15 356.15