condition mean min max ZT0-3 787.8 787.8 787.8 ZT4-7 752.1 752.1 752.1 ZT8-11 671.8499999999999 671.8499999999999 671.8499999999999 ZT12-15 613.05 613.05 613.05 ZT16-19 690.5 690.5 690.5 ZT20-23 720.25 720.25 720.25