condition mean min max ZT0-3 0.6330915 0.5824245 0.6837585 ZT4-7 0.48735649999999997 0.48735649999999997 0.48735649999999997 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.095812 0.095812 0.095812 ZT20-23 0.0 0.0 0.0