condition mean min max ZT0-3 0.31966333333333335 0.0 0.95899 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 2.0767 2.0767 2.0767