condition mean min max ZT0-3 0.933365 0.933365 0.933365 ZT4-7 0.227615 0.227615 0.227615 ZT8-11 0.46893 0.46893 0.46893 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0