condition mean min max ZT0-3 0.02465005 0.02465005 0.02465005 ZT4-7 0.02877295 0.02877295 0.02877295 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0126715 0.0126715 0.0126715 ZT20-23 0.0310773 0.0310773 0.0310773