condition mean min max ZT0-3 0.042804499999999995 0.04226625 0.04334275 ZT4-7 0.0881685 0.0881685 0.0881685 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0