condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.04516135 0.04516135 0.04516135 ZT12-15 0.0235782 0.0235782 0.0235782 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0616011 0.0616011 0.0616011