condition mean min max ZT0-3 988.6 988.6 988.6 ZT4-7 815.6 815.6 815.6 ZT8-11 794.6 794.6 794.6 ZT12-15 789.05 789.05 789.05 ZT16-19 930.25 930.25 930.25 ZT20-23 1050.0 1050.0 1050.0