condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.17130733333333334 0.17130733333333334 0.17130733333333334 ZT12-15 0.39050999999999997 0.39050999999999997 0.39050999999999997 ZT16-19 0.0 0.0 0.0 ZT20-23 0.214032 0.214032 0.214032