condition mean min max ZT0-3 0.4185183333333333 0.4185183333333333 0.4185183333333333 ZT4-7 0.7875995 0.7875995 0.7875995 ZT8-11 0.6520185000000001 0.6520185000000001 0.6520185000000001 ZT12-15 0.553124 0.553124 0.553124 ZT16-19 0.686356 0.686356 0.686356 ZT20-23 0.656785 0.656785 0.656785