condition mean min max ZT0-3 766.65 766.65 766.65 ZT4-7 1725.9 1725.9 1725.9 ZT8-11 1763.8 1763.8 1763.8 ZT12-15 1936.05 1936.05 1936.05 ZT16-19 1550.4499999999998 1550.4499999999998 1550.4499999999998 ZT20-23 1003.85 1003.85 1003.85