condition mean min max ZT0-3 1072.75 1072.75 1072.75 ZT4-7 846.2 846.2 846.2 ZT8-11 975.65 975.65 975.65 ZT12-15 913.95 913.95 913.95 ZT16-19 1068.7 1068.7 1068.7 ZT20-23 1018.4 1018.4 1018.4