condition mean min max ZT0-3 1813.25 1813.25 1813.25 ZT4-7 1869.7 1869.7 1869.7 ZT8-11 1644.6999999999998 1644.6999999999998 1644.6999999999998 ZT12-15 1143.9 1143.9 1143.9 ZT16-19 1055.85 1055.85 1055.85 ZT20-23 1441.5 1441.5 1441.5