condition mean min max ZT0-3 34.3 34.3 34.3 ZT4-7 53.2 53.2 53.2 ZT8-11 56.15 56.15 56.15 ZT12-15 57.85 57.85 57.85 ZT16-19 49.7 49.7 49.7 ZT20-23 62.349999999999994 62.349999999999994 62.349999999999994