When exploring black holes for points..

[rocky8311]

Does anybody know the rhyme or reason for which black hole you come out of when you're exploring a wormhole? I thought at first that they were two sided but it seems like more than one of them like to come out at the same black hole sometimes, although that might be when they're odd numbered.

One time on a small map there seemed to be only one black hole so it flushed me down and then I came right back up from the same one.