condition mean min max ZT0-3 0.24322925 0.0 0.4864585 ZT4-7 0.2476115 0.2476115 0.2476115 ZT8-11 0.2404235 0.2404235 0.2404235 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0