condition mean min max ZT0-3 87.1012 87.1012 87.1012 ZT4-7 68.9635 68.9635 68.9635 ZT8-11 52.8496 52.8496 52.8496 ZT12-15 56.2346 56.2346 56.2346 ZT16-19 83.00970000000001 83.00970000000001 83.00970000000001 ZT20-23 88.3605 88.3605 88.3605