condition mean min max ZT0-3 43.91485 12.565100000000001 62.061 ZT4-7 13.67015 13.67015 13.67015 ZT8-11 11.753 11.753 11.753 ZT12-15 13.872874999999999 11.666599999999999 16.07915 ZT16-19 29.06955 29.06955 29.06955 ZT20-23 56.37335 56.37335 56.37335