condition mean min max ZT0-3 727.259892 727.259892 727.259892 ZT4-7 703.345648 703.345648 703.345648 ZT8-11 613.0674584999999 613.0674584999999 613.0674584999999 ZT12-15 702.139273 702.139273 702.139273 ZT16-19 586.3091025 586.3091025 586.3091025 ZT20-23 676.198427 676.198427 676.198427