condition mean min max ZT0-3 0.338051 0.223939 0.452163 ZT4-7 0.30190649999999997 0.30190649999999997 0.30190649999999997 ZT8-11 0.076644 0.076644 0.076644 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0