condition mean min max ZT0-3 12332.95 12332.95 12332.95 ZT4-7 10386.5 10386.5 10386.5 ZT8-11 11200.5 11200.5 11200.5 ZT12-15 13002.349999999999 13002.349999999999 13002.349999999999 ZT16-19 12600.0 12600.0 12600.0 ZT20-23 13806.65 13806.65 13806.65