condition mean min max ZT0-3 0.015118566666666666 0.0 0.0453557 ZT4-7 0.09038315 0.09038315 0.09038315 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