condition mean min max ZT0-3 94.9 94.9 94.9 ZT4-7 96.1 96.1 96.1 ZT8-11 61.9 61.9 61.9 ZT12-15 23.15 23.15 23.15 ZT16-19 22.9 22.9 22.9 ZT20-23 35.6 35.6 35.6