condition mean min max ZT0-3 5561.700000000001 5561.700000000001 5561.700000000001 ZT4-7 4872.7 4872.7 4872.7 ZT8-11 4690.45 4690.45 4690.45 ZT12-15 4764.700000000001 4764.700000000001 4764.700000000001 ZT16-19 4867.4 4867.4 4867.4 ZT20-23 5301.2 5301.2 5301.2