From my old r45 Haynes manual (doesn't actually cover this model though) the figures are consistent with the CTS figures I have been getting from Pscan. Checking the average O2 sensor voltage on the same warm up I get 0.47v so close to the 0.45v that I think is the ideal value.
I think there may be a better way to approach this but I can't think of one at the moment. Any ideas welcome
Cheers,