condition mean min max ZT0-3 0.6908795 0.140902 1.4491749999999999 ZT4-7 0.5856304999999999 0.5856304999999999 0.5856304999999999 ZT8-11 0.282951 0.282951 0.282951 ZT12-15 0.13784925 0.0 0.2756985 ZT16-19 0.174061 0.174061 0.174061 ZT20-23 0.0 0.0 0.0