Gidday I have a Stock 2002 Blazer 4.3 with a LS1B ecm.........could you guys look at my log to let me know if my O2 sensors are behaving normally or does it look like they are a bit sad and need replacing?. The voltage on both fluctuate up and down consistantly is this normal?

Cheers ScottyO2 sensor log_0000.efi