condition mean min max ZT0-3 58.2 58.2 58.2 ZT4-7 37.4 37.4 37.4 ZT8-11 32.45 32.45 32.45 ZT12-15 89.4 89.4 89.4 ZT16-19 83.65 83.65 83.65 ZT20-23 86.7 86.7 86.7