condition mean min max ZT0-3 1069.85 1069.85 1069.85 ZT4-7 1317.5 1317.5 1317.5 ZT8-11 1365.1999999999998 1365.1999999999998 1365.1999999999998 ZT12-15 1050.15 1050.15 1050.15 ZT16-19 739.1 739.1 739.1 ZT20-23 722.05 722.05 722.05