condition mean min max ZT0-3 9928.85 9928.85 9928.85 ZT4-7 6566.5 6566.5 6566.5 ZT8-11 6429.5 6429.5 6429.5 ZT12-15 8602.5 8602.5 8602.5 ZT16-19 9859.65 9859.65 9859.65 ZT20-23 9100.75 9100.75 9100.75