condition mean min max ZT0-3 9.128891015 5.656408817000001 12.601373213 ZT4-7 14.232944269999999 13.760916354999999 14.704972184999999 ZT8-11 24.816482737500003 17.689457150000003 31.943508325 ZT12-15 26.2094218475 25.33958527 27.079258425 ZT16-19 14.2476167175 13.49540855 14.999824884999999 ZT20-23 12.34061902 11.215969935 13.465268105