condition mean min max ZT0-3 62.85 62.85 62.85 ZT4-7 52.3 52.3 52.3 ZT8-11 62.15 62.15 62.15 ZT12-15 47.75 47.75 47.75 ZT16-19 89.5 89.5 89.5 ZT20-23 93.75 93.75 93.75