condition mean min max ZT0-3 91.0 91.0 91.0 ZT4-7 96.2 96.2 96.2 ZT8-11 100.6 100.6 100.6 ZT12-15 106.1 106.1 106.1 ZT16-19 186.65 186.65 186.65 ZT20-23 165.0 165.0 165.0