condition mean min max ZT0-3 94.5 94.5 94.5 ZT4-7 75.2 75.2 75.2 ZT8-11 94.9 94.9 94.9 ZT12-15 49.75 49.75 49.75 ZT16-19 68.4 68.4 68.4 ZT20-23 76.35 76.35 76.35