condition mean min max ZT0-3 1366.6 1366.6 1366.6 ZT4-7 895.1 895.1 895.1 ZT8-11 1017.0 1017.0 1017.0 ZT12-15 1140.5 1140.5 1140.5 ZT16-19 1383.6 1383.6 1383.6 ZT20-23 1514.6999999999998 1514.6999999999998 1514.6999999999998