condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.09730579566666665 0.0 0.1946115913333333 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0