condition mean min max ZT0-3 75.3616 75.3616 75.3616 ZT4-7 62.128 62.128 62.128 ZT8-11 81.24510000000001 81.24510000000001 81.24510000000001 ZT12-15 79.0874 79.0874 79.0874 ZT16-19 103.22704999999999 103.22704999999999 103.22704999999999 ZT20-23 68.2803 68.2803 68.2803