CG, you may have read the chart incorrectly.

Hole BR-368 has an average of 2.78 g/t over 84m (249.5 to 333.5) which includes 17.36 g/t over 9m (306.5 to 315.5) and by 54.2 g/t over 1.59m (308.41 to 310).

The 17.36 g/t and 54.2 g/t were basically the highlights of that hole.

It seems you just made an error reading the From (m) and To (m) columns.