to understand aeromags, page-20

I don't want to get to excited as little knowlege could be dangerous, when I saw the big blue above the southern flank I wondered if this was BHPs area C, checking cross reference it from fig 1 map in the same anouncement, the big blue area is slightly off from the area highlighted, as I would have thought BHP's area C would show substantial blue, Area C has more reds & orange, unless I'm mistaken.... or is Area C is the big blue...

Cheers