condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0028380427500000003 0.0 0.005676085500000001 ZT12-15 0.023513872500000005 0.019829686000000003 0.027198059000000004 ZT16-19 0.0 0.0 0.0 ZT20-23 0.00978224875 0.007209646 0.0123548515