Read this plug please!

Only gas ever in the engine is Shell 93 octane.
Thinking I might be lean at cruise and deeper in the throttle even though the idle smells rich.

Thanks for the help yall.
Sorry for the lack of response, I just haven't had time to mess with the car or the internet this week.

A wide band O2 sensor will tell you more than reading plugs these days. (Meaning unleaded and questionable fuel).