condition mean min max ZT0-3 884.5 884.5 884.5 ZT4-7 850.1 850.1 850.1 ZT8-11 766.5 766.5 766.5 ZT12-15 852.15 852.15 852.15 ZT16-19 927.8 927.8 927.8 ZT20-23 881.65 881.65 881.65