condition mean min max ZT0-3 0.05929583333333333 0.0 0.0908115 ZT4-7 0.3229465 0.3229465 0.3229465 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