condition mean min max ZT0-3 0.0032157929999999998 0.0 0.0064315859999999996 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.012602956 0.0 0.025205912 ZT20-23 0.0 0.0 0.0