condition mean min max ZT0-3 1426.35 1426.35 1426.35 ZT4-7 1262.8 1262.8 1262.8 ZT8-11 1325.55 1325.55 1325.55 ZT12-15 1215.5 1215.5 1215.5 ZT16-19 1313.65 1313.65 1313.65 ZT20-23 1587.9 1587.9 1587.9