condition mean min max ZT0-3 0.0459774 0.0459774 0.0459774 ZT4-7 0.0 0.0 0.0 ZT8-11 0.02057065 0.02057065 0.02057065 ZT12-15 0.02488235 0.02488235 0.02488235 ZT16-19 0.0 0.0 0.0 ZT20-23 0.00821645 0.00821645 0.00821645