condition mean min max ZT0-3 0.10588425000000001 0.0704845 0.14128400000000002 ZT4-7 0.0 0.0 0.0 ZT8-11 0.49282750000000003 0.49282750000000003 0.49282750000000003 ZT12-15 0 0 0 ZT16-19 0.41700249999999994 0.41700249999999994 0.41700249999999994 ZT20-23 0.278047 0.278047 0.278047