condition mean min max ZT0-3 5157.5 5157.5 5157.5 ZT4-7 5287.0 5287.0 5287.0 ZT8-11 4695.05 4695.05 4695.05 ZT12-15 4164.200000000001 4164.200000000001 4164.200000000001 ZT16-19 4021.8999999999996 4021.8999999999996 4021.8999999999996 ZT20-23 3446.6 3446.6 3446.6