condition mean min max ZT0-3 1.00208075 0.8966114999999999 1.10755 ZT4-7 0.8646715 0.8646715 0.8646715 ZT8-11 0.1601535 0.1601535 0.1601535 ZT12-15 0 0 0 ZT16-19 0.6930285 0.6930285 0.6930285 ZT20-23 1.0447250000000001 1.0447250000000001 1.0447250000000001