condition mean min max ZT0-3 3613.65 3613.65 3613.65 ZT4-7 4337.0 4337.0 4337.0 ZT8-11 4571.299999999999 4571.299999999999 4571.299999999999 ZT12-15 4533.200000000001 4533.200000000001 4533.200000000001 ZT16-19 4460.65 4460.65 4460.65 ZT20-23 4137.65 4137.65 4137.65