condition mean min max ZT0-3 36.02305 35.2055 36.8406 ZT4-7 34.511449999999996 34.511449999999996 34.511449999999996 ZT8-11 39.389250000000004 39.389250000000004 39.389250000000004 ZT12-15 0 0 0 ZT16-19 60.874399999999994 60.874399999999994 60.874399999999994 ZT20-23 40.493300000000005 40.493300000000005 40.493300000000005