condition mean min max ZT0-3 21.63475 19.18955 24.07995 ZT4-7 13.468599999999999 13.468599999999999 13.468599999999999 ZT8-11 16.378 16.378 16.378 ZT12-15 0 0 0 ZT16-19 18.81615 18.81615 18.81615 ZT20-23 18.4722 18.4722 18.4722