condition mean min max ZT0-3 891.0 891.0 891.0 ZT4-7 768.9 768.9 768.9 ZT8-11 724.2 724.2 724.2 ZT12-15 694.8 694.8 694.8 ZT16-19 950.3 950.3 950.3 ZT20-23 912.15 912.15 912.15