Compression test results

TT5.9mag said
What’s the problem? Are you getting detonation? Does it not run well? Why are you doing a compression test? Show some pics of the plugs you pulled out.

The previous owner told me that some times it will start to run rough due to the valve seals in cylinder 3 needing to be replaced. After letting it sit a couple weeks I took it out yesterday and it was just not running well. Some forum members recommended I do a compression test while the plugs are out before I start on changing the seals. The plugs looked pretty trashed, all are black with varying degrees of wetness