O2 sensor question

I ran some diagnostics on my car this week and want to confirm that I need the right oxygen sensors.

O2 bank 1 sensor 1 and O2 bank 2 sensor 1 have voltages all over the place.

Are these the precat sensors?



O2 bank 1 sensor 1

0.535V

0.39V

0.33V

0.585V

0.595V

0.33V

0.565V

0.645V



O2 bank 2 sensor 1

0.74V

0.765V

0.75V

0.23V

0.665V

0.755V

0.18V

0.685V



Bank 1 sensor 2 and bank 2 sensor 2, the voltages were consistently around 0.435 and 0.44v.

Thanks for help