condition mean min max ZT0-3 1003.1 1003.1 1003.1 ZT4-7 1187.6 1187.6 1187.6 ZT8-11 1086.1 1086.1 1086.1 ZT12-15 1057.35 1057.35 1057.35 ZT16-19 1272.4 1272.4 1272.4 ZT20-23 1215.65 1215.65 1215.65