condition mean min max ZT0-3 1.01638825 0.8230515 1.2097250000000002 ZT4-7 0.0648135 0.0648135 0.0648135 ZT8-11 0.704985 0.704985 0.704985 ZT12-15 0 0 0 ZT16-19 1.1274775 1.1274775 1.1274775 ZT20-23 0.6291175 0.6291175 0.6291175