condition mean min max ZT0-3 1045.8098333333332 915.9945 1207.095 ZT4-7 1062.73 1062.73 1062.73 ZT8-11 986.7225000000001 986.7225000000001 986.7225000000001 ZT12-15 1009.4745 904.769 1114.18 ZT16-19 946.6469999999999 946.6469999999999 946.6469999999999 ZT20-23 820.9005 820.9005 820.9005