condition mean min max ZT0-3 74.95 74.95 74.95 ZT4-7 51.7 51.7 51.7 ZT8-11 70.15 70.15 70.15 ZT12-15 94.95 94.95 94.95 ZT16-19 80.7 80.7 80.7 ZT20-23 45.1 45.1 45.1