condition mean min max ZT0-3 45.9 45.9 45.9 ZT4-7 70.9 70.9 70.9 ZT8-11 46.7 46.7 46.7 ZT12-15 84.1 84.1 84.1 ZT16-19 94.15 94.15 94.15 ZT20-23 40.1 40.1 40.1