condition mean min max ZT0-3 85.25 85.25 85.25 ZT4-7 69.0 69.0 69.0 ZT8-11 48.7 48.7 48.7 ZT12-15 128.6 128.6 128.6 ZT16-19 120.2 120.2 120.2 ZT20-23 90.4 90.4 90.4