condition mean min max ZT0-3 0.8149645 0.6166645 1.0132645 ZT4-7 1.3788399999999998 1.3788399999999998 1.3788399999999998 ZT8-11 1.8692015 1.8692015 1.8692015 ZT12-15 0 0 0 ZT16-19 0.9420525 0.9420525 0.9420525 ZT20-23 1.218345 1.218345 1.218345