AI Artillery Spotting

[Ricky B]

...the one I do see is to the west and surrounded.  …

So the surrounded status has no impact on spotting. And my eye counts it as being 5 hexes to some of the units in the circle, but maybe it is the furthest in your circle being hit? From what I recall, the game manual states somewhere that dust spotting doubles the current vis range for the dust being visible, so as long as the current vis is at least 4 hexes, the isolated Soviet units are likely the spotters.

Rick