condition mean min max ZT0-3 49.956950000000006 49.956950000000006 49.956950000000006 ZT4-7 92.5367 92.5367 92.5367 ZT8-11 35.06825 35.06825 35.06825 ZT12-15 14.2426 14.2426 14.2426 ZT16-19 15.7348 15.7348 15.7348 ZT20-23 23.246850000000002 23.246850000000002 23.246850000000002