INA330: temperature coefficient of current conveyor

Part Number:INA330

The INA330 datahseet specifies the maximum variation across -40 to +85 degrees C of the current conveyor offset, which is the dominant source of instability. I would like to know what the temperature coefficient of this error is. Is it likely the variation is linear across the -40 to +85 range? My applications will only ever expose the INA330 to a narrow range  around room temperature in a well controlled lab, but requires the best possible stability.

Thanks, Jochen