condition mean min max ZT0-3 1289.6 1289.6 1289.6 ZT4-7 1447.2 1447.2 1447.2 ZT8-11 1411.0 1411.0 1411.0 ZT12-15 1805.85 1805.85 1805.85 ZT16-19 1679.5 1679.5 1679.5 ZT20-23 1369.6 1369.6 1369.6