You can get a general sense of how corrupted Rowan is (and his guilt, too) via his status screen portrait. I forget the exact details and don't currently have the game on my drive, but as I recall it's something along the lines of...an angry red glow around Rowan shows corruption progression, how done with this shit his eyes look indicates guilt. You can find an exact image in this thread showing this off via the Search feature, but YMMV in finding it.Guys i was just wondering, can you check things like corruption? Or points towards certain characters?
For exact numbers for corruption, and for any idea of relation stats, the only way is to enable the console and use commands in a way that returns the current value. If you choose to go that route, the post linked in my signature has the needed details.