condition mean min max ZT0-3 0.01611595825 0.0 0.0322319165 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0075985705 0.0 0.015197141 ZT12-15 0.005939595 0.0 0.01187919 ZT16-19 0.0190108105 0.0163925345 0.0216290865 ZT20-23 0.04232394975 0.037053445500000004 0.047594453999999994