condition mean min max ZT0-3 795.324662 795.324662 795.324662 ZT4-7 589.5459275000001 589.5459275000001 589.5459275000001 ZT8-11 567.804933 567.804933 567.804933 ZT12-15 740.699748 740.699748 740.699748 ZT16-19 708.4378360000001 708.4378360000001 708.4378360000001 ZT20-23 712.763967 712.763967 712.763967