condition mean min max ZT0-3 2.4791675 1.881685 3.0766500000000003 ZT4-7 0.957717 0.957717 0.957717 ZT8-11 1.0664985 1.0664985 1.0664985 ZT12-15 0 0 0 ZT16-19 0.7297045 0.7297045 0.7297045 ZT20-23 0.420072 0.420072 0.420072