condition mean min max ZT0-3 1.33601 1.33601 1.33601 ZT4-7 0.7429675 0.7429675 0.7429675 ZT8-11 0.9760500000000001 0.9760500000000001 0.9760500000000001 ZT12-15 1.432685 1.432685 1.432685 ZT16-19 0.9750935 0.9750935 0.9750935 ZT20-23 1.1262475 1.1262475 1.1262475