condition mean min max ZT0-3 16.63205 16.63205 16.63205 ZT4-7 11.971599999999999 11.971599999999999 11.971599999999999 ZT8-11 13.98995 13.98995 13.98995 ZT12-15 13.23275 13.23275 13.23275 ZT16-19 20.014 20.014 20.014 ZT20-23 16.41165 16.41165 16.41165