condition mean min max ZT0-3 1462.8 1462.8 1462.8 ZT4-7 1135.6 1135.6 1135.6 ZT8-11 1371.6 1371.6 1371.6 ZT12-15 1411.1 1411.1 1411.1 ZT16-19 1431.55 1431.55 1431.55 ZT20-23 1379.9 1379.9 1379.9