condition mean min max ZT0-3 1168.9 1168.9 1168.9 ZT4-7 1461.2 1461.2 1461.2 ZT8-11 1320.4 1320.4 1320.4 ZT12-15 1424.6 1424.6 1424.6 ZT16-19 1364.4499999999998 1364.4499999999998 1364.4499999999998 ZT20-23 1152.6 1152.6 1152.6