condition mean min max ZT0-3 98.6 98.6 98.6 ZT4-7 79.7 79.7 79.7 ZT8-11 52.8 52.8 52.8 ZT12-15 97.6 97.6 97.6 ZT16-19 149.6 149.6 149.6 ZT20-23 86.2 86.2 86.2