condition mean min max ZT0-3 0.3016105 0.139287 0.5057495000000001 ZT4-7 8.91609 8.91609 8.91609 ZT8-11 102.30075 102.30075 102.30075 ZT12-15 38.888175000000004 19.427950000000003 58.3484 ZT16-19 14.41525 14.41525 14.41525 ZT20-23 5.32282 5.32282 5.32282