condition mean min max ZT0-3 102.679025 102.679025 102.679025 ZT4-7 96.7563205 96.7563205 96.7563205 ZT8-11 99.92364 99.92364 99.92364 ZT12-15 111.5150065 111.5150065 111.5150065 ZT16-19 123.02193399999999 123.02193399999999 123.02193399999999 ZT20-23 121.638623 121.638623 121.638623