condition mean min max ZT0-3 82.703826 82.703826 82.703826 ZT4-7 126.74256749999999 126.74256749999999 126.74256749999999 ZT8-11 160.8247225 160.8247225 160.8247225 ZT12-15 139.0019935 139.0019935 139.0019935 ZT16-19 111.12686450000001 111.12686450000001 111.12686450000001 ZT20-23 169.9218975 169.9218975 169.9218975