condition mean min max ZT0-3 7366.75 7366.75 7366.75 ZT4-7 5848.9 5848.9 5848.9 ZT8-11 6717.95 6717.95 6717.95 ZT12-15 6754.3 6754.3 6754.3 ZT16-19 7224.950000000001 7224.950000000001 7224.950000000001 ZT20-23 7623.7 7623.7 7623.7