condition mean min max ZT0-3 895.45 895.45 895.45 ZT4-7 847.8 847.8 847.8 ZT8-11 652.0999999999999 652.0999999999999 652.0999999999999 ZT12-15 567.3 567.3 567.3 ZT16-19 618.8499999999999 618.8499999999999 618.8499999999999 ZT20-23 646.95 646.95 646.95