condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.08154547116666667 0.0 0.16309094233333335 ZT8-11 0.0 0.0 0.0 ZT12-15 0.039582964 0.0 0.079165928 ZT16-19 0.08071656466666667 0.0 0.16143312933333334 ZT20-23 0.0 0.0 0.0