condition mean min max ZT0-3 192.617961 192.617961 192.617961 ZT4-7 139.92209250000002 139.92209250000002 139.92209250000002 ZT8-11 113.856198 113.856198 113.856198 ZT12-15 158.185509 158.185509 158.185509 ZT16-19 176.1315375 176.1315375 176.1315375 ZT20-23 251.4868795 251.4868795 251.4868795