condition mean min max ZT0-3 198.26916666666668 112.10300000000001 349.098 ZT4-7 341.85749999999996 341.85749999999996 341.85749999999996 ZT8-11 174.594 174.594 174.594 ZT12-15 130.08225 124.7535 135.411 ZT16-19 126.11099999999999 126.11099999999999 126.11099999999999 ZT20-23 155.98149999999998 155.98149999999998 155.98149999999998