condition mean min max ZT0-3 0.06155750000000001 0.0 0.18467250000000002 ZT4-7 0.090363 0.090363 0.090363 ZT8-11 0.0 0.0 0.0 ZT12-15 0.04577925 0.0 0.0915585 ZT16-19 0.0 0.0 0.0 ZT20-23 0.2000595 0.2000595 0.2000595