condition mean min max ZT0-3 2.0130123480515 1.2785620953499999 3.2365446808000002 ZT4-7 0.019618519837 0.019618519837 0.019618519837 ZT8-11 3.90496935 3.90496935 3.90496935 ZT12-15 7.053245000994114 3.881110001988225 10.225380000000001 ZT16-19 0.0190862525 0.0190862525 0.0190862525 ZT20-23 1.675260574135 1.675260574135 1.675260574135