condition mean min max ZT0-3 870.0 870.0 870.0 ZT4-7 810.4 810.4 810.4 ZT8-11 684.8499999999999 684.8499999999999 684.8499999999999 ZT12-15 707.4 707.4 707.4 ZT16-19 701.45 701.45 701.45 ZT20-23 874.95 874.95 874.95