Regarding Nick Jolly's LinkedIn comment re gravity survey, can...

Regarding Nick Jolly's LinkedIn comment re gravity survey, can someone explain how to interpret the gravity survey in the following image from today's announcement - eg should we be looking at the darker blue colours of where they should be drilling or different colours? I also noted Nick commented about testing 'other' targets - where are they on this image?

There are so many drill hole dots around GWs that it hard to understand why Nick made the comment "extended gravity survey footprint' - seems to me that the outside of GWs is coloured darkish blue.