condition mean min max ZT0-3 0.010408683333333333 0.0 0.0159837 ZT4-7 0.0 0.0 0.0 ZT8-11 0.07660934999999999 0.07660934999999999 0.07660934999999999 ZT12-15 0.0312159 0.03057145 0.03186035 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0167 0.0167 0.0167