condition mean min max ZT0-3 0.0653625 0.0 0.130725 ZT4-7 0.3902785 0.3902785 0.3902785 ZT8-11 0.258204 0.258204 0.258204 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0