What does "in areas" distinguish in Atlas passives?

I've been getting some Atlas passives from Maven. Almost all passives contain the qualifier "in areas". What does this mean exactly? I have the following guesses:

• In maps only
• Not campaign or boss fights, like Maven herself
• Only that section of the Atlas, like Heawark Hamlet
• Maps that have the corresponding master mission active

Solution 1:

It means the quadrant that the passive tree belongs to. For instance, take Lira Arthain for example. If you were to take Distinguished Demolitionist, you gain 35% increased Explosive Radius and 20% increased number of Explosives in maps that belong to Lira Arthain.