condition mean min max ZT0-3 0.28687233333333334 0.0 0.5711845 ZT4-7 0.44887499999999997 0.44887499999999997 0.44887499999999997 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0922645 0.0 0.184529 ZT16-19 0.0 0.0 0.0 ZT20-23 0.1980095 0.1980095 0.1980095