condition mean min max ZT0-3 1121.2 1121.2 1121.2 ZT4-7 1126.9 1126.9 1126.9 ZT8-11 1189.0 1189.0 1189.0 ZT12-15 1318.05 1318.05 1318.05 ZT16-19 1173.1 1173.1 1173.1 ZT20-23 1063.35 1063.35 1063.35