condition mean min max ZT0-3 0.03598675 0.0 0.0772004 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0154719 0.0154719 0.0154719 ZT12-15 0.33436425000000003 0.313261 0.35546750000000005 ZT16-19 0.16111399999999998 0.16111399999999998 0.16111399999999998 ZT20-23 0.14745245 0.14745245 0.14745245