condition mean min max ZT0-3 1214.5 1214.5 1214.5 ZT4-7 1184.2 1184.2 1184.2 ZT8-11 1201.25 1201.25 1201.25 ZT12-15 966.1 966.1 966.1 ZT16-19 1057.15 1057.15 1057.15 ZT20-23 1186.2 1186.2 1186.2