condition mean min max ZT0-3 687.7 687.7 687.7 ZT4-7 627.9 627.9 627.9 ZT8-11 568.1500000000001 568.1500000000001 568.1500000000001 ZT12-15 568.55 568.55 568.55 ZT16-19 695.25 695.25 695.25 ZT20-23 717.9 717.9 717.9