condition mean min max ZT0-3 1199.85 1199.85 1199.85 ZT4-7 851.5 851.5 851.5 ZT8-11 652.1 652.1 652.1 ZT12-15 596.6 596.6 596.6 ZT16-19 548.5 548.5 548.5 ZT20-23 939.35 939.35 939.35