condition mean min max ZT0-3 324.545 324.545 324.545 ZT4-7 298.56399999999996 298.56399999999996 298.56399999999996 ZT8-11 238.8635 238.8635 238.8635 ZT12-15 120.5545 120.5545 120.5545 ZT16-19 194.734 194.734 194.734 ZT20-23 208.6105 208.6105 208.6105