condition mean min max ZT0-3 0.10085975 0.0678725 0.133847 ZT4-7 0.34069950000000004 0.34069950000000004 0.34069950000000004 ZT8-11 0.068967 0.068967 0.068967 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.1340155 0.1340155 0.1340155