condition mean min max ZT0-3 1.6981074999999999 1.51617 1.880045 ZT4-7 2.104555 2.104555 2.104555 ZT8-11 1.650965 1.650965 1.650965 ZT12-15 0 0 0 ZT16-19 2.293945 2.293945 2.293945 ZT20-23 1.2931124999999999 1.2931124999999999 1.2931124999999999