condition mean min max ZT0-3 0.08123364999999999 0.08123364999999999 0.08123364999999999 ZT4-7 0.08302324999999999 0.08302324999999999 0.08302324999999999 ZT8-11 0.0551795 0.0551795 0.0551795 ZT12-15 0.137931 0.137931 0.137931 ZT16-19 0.15941149999999998 0.15941149999999998 0.15941149999999998 ZT20-23 0.11660604999999999 0.11660604999999999 0.11660604999999999