condition mean min max ZT0-3 42.25 42.25 42.25 ZT4-7 52.9 52.9 52.9 ZT8-11 48.9 48.9 48.9 ZT12-15 73.9 73.9 73.9 ZT16-19 63.1 63.1 63.1 ZT20-23 42.349999999999994 42.349999999999994 42.349999999999994