condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.08029727575000001 0.020087095 0.14050745650000002 ZT8-11 0.34598413825 0.2812154385 0.410752838 ZT12-15 0.32438090599999997 0.25034634749999995 0.3984154645 ZT16-19 0.196243991 0.166687284 0.225800698 ZT20-23 0.33525730825 0.31430772650000005 0.35620689