condition mean min max ZT0-3 3565.7 3565.7 3565.7 ZT4-7 1933.2 1933.2 1933.2 ZT8-11 1974.9 1974.9 1974.9 ZT12-15 1683.35 1683.35 1683.35 ZT16-19 2047.4 2047.4 2047.4 ZT20-23 3002.05 3002.05 3002.05