Help with o2 sensor reading

[rcan6]

These are my two downstream O2 sensor readings at idle. I know the graphing is probably supposed to match. I don’t have enough mechanical understanding to know if the strait line graph or the fluctuating graph is the sensor with a problem. Thanks

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[ttnuagmada]

Mine both sit at a steady .74-.78ish at idle. The fluctuating doesn't look normal. Disclaimer: I'm not super experienced with this stuff either.

 

[ttnuagmada]

If you were curious, here's me sitting at idle after driving for about 30 minutes.

 

[Darrell78]

What are you trying to figure out? Those both seem ok to me. Small fluctuations is normal especially if it's idling. Bring the rpm up for 20 seconds and it should smooth out. If it were a bad cat it would swing alot more then that. But like I said what problem are you looking for?

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