condition mean min max ZT0-3 0.027227983333333334 0.0 0.0423109 ZT4-7 0.0 0.0 0.0 ZT8-11 0.04043575 0.04043575 0.04043575 ZT12-15 0.03947425 0.0 0.0789485 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0