The standard coverage is an amount equal to your bodily injury liability coverage, but you may purchase additional coverage up to an amount double your bodily injury liability. The minimum amount required by law is $20,000 per person, $40,000 per accident.
Quick access recorder. A quick access recorder (QAR) is an airborne flight data recorder designed to provide quick and easy access to raw flight data, through means such as USB or cellular network connections and/or the use of standard flash memory cards.
If the QNH is high at say 1031 hPa, then the height difference between the transponder's pressure altitude and an aircraft altimeter altitude set to QNH would be (1031 - 1013) x 30 = 540 feet. So what altitude is the ATC reporting?