condition mean min max ZT0-3 0.059514449999999997 0.059514449999999997 0.059514449999999997 ZT4-7 0.048719700000000005 0.048719700000000005 0.048719700000000005 ZT8-11 0.0682257 0.0682257 0.0682257 ZT12-15 0.06419515 0.06419515 0.06419515 ZT16-19 0.09182055 0.09182055 0.09182055 ZT20-23 0.05505259999999999 0.05505259999999999 0.05505259999999999