condition mean min max ZT0-3 0.0386263 0.0386263 0.0386263 ZT4-7 0.045086799999999996 0.045086799999999996 0.045086799999999996 ZT8-11 0.0736705 0.0736705 0.0736705 ZT12-15 0.14898250000000002 0.14898250000000002 0.14898250000000002 ZT16-19 0.0 0.0 0.0 ZT20-23 0.03906175 0.03906175 0.03906175