condition mean min max ZT0-3 743.8 743.8 743.8 ZT4-7 699.4 699.4 699.4 ZT8-11 685.2 685.2 685.2 ZT12-15 752.0999999999999 752.0999999999999 752.0999999999999 ZT16-19 848.55 848.55 848.55 ZT20-23 787.3499999999999 787.3499999999999 787.3499999999999