condition mean min max ZT0-3 0.06282683333333333 0.0 0.0964775 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.04500475 0.0 0.0900095 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0