Temperature readings from a good catalytic converter.

Temp of the exhaust pipe prior to the catalytic converter 70 degrees C.
Temp of the exhaust pipe after to the catalytic converter 100 to 105 degrees C.

To and from the shopping centre 6 km run each way (10 min between runs) , low speed (50 kph residential, avg would be 20 to 30 kph), so little load, little throttle.

Cat converter about 3 years / 30,000km old.

Measured with infrared sensor, about 5cm from pipe and about 5cm from each side of converter.