condition mean min max ZT0-3 0.06518039716666667 0.0 0.13036079433333334 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.26808034366666667 0.0 0.5361606873333333 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0