Oxygen Sensor Readings from OBD2- Help Needed

Dear All,

i have recorded some reading of Oxygen sensor 1 and Oxygen sensor 2 using my homemade microcontroller based OBD2 Interface with my pocket pc and laptop.

I want to know if my car is giving the perfect or average readings...or i need to change my O2's....even a little piece of advise is great.

Oxygen Sensor 1 = Min 70 milivolts
Max 800 milivolts (Average)

Oxygen Sensor 2 = Min 90 milivolts
Max 680 milivolts

I have 3.1LS with 210,000 miles on it. the car idles at 650rpm without a/c and 780 with a/c.
fuel consumtion is 22.5mpg in the city with a/c

any info/advise or help is great.
thanks and best regards

well...i suppose there is nobody here who ever took the readings from there cars?...

if thats the case, then i can help you guys to read your car sensors while you drive.

Best Regards