condition mean min max ZT0-3 10.7 10.7 10.7 ZT4-7 48.2 48.2 48.2 ZT8-11 46.349999999999994 46.349999999999994 46.349999999999994 ZT12-15 10.05 10.05 10.05 ZT16-19 27.15 27.15 27.15 ZT20-23 9.85 9.85 9.85