condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.10304 0.10304 0.10304 ZT16-19 0.06838754999999999 0.06838754999999999 0.06838754999999999 ZT20-23 0.0170125 0.0170125 0.0170125