condition mean min max ZT0-3 15.3355 15.3355 15.3355 ZT4-7 12.41655 12.41655 12.41655 ZT8-11 9.828510000000001 9.828510000000001 9.828510000000001 ZT12-15 10.77905 10.77905 10.77905 ZT16-19 15.02835 15.02835 15.02835 ZT20-23 16.3341 16.3341 16.3341