condition mean min max ZT0-3 735.4 735.4 735.4 ZT4-7 309.2 309.2 309.2 ZT8-11 398.15 398.15 398.15 ZT12-15 617.55 617.55 617.55 ZT16-19 768.1 768.1 768.1 ZT20-23 759.7 759.7 759.7