common.xml Offsets and calibrations values for hardware sensors. This makes it easier to debug the calibration process. magnetometer X offset magnetometer Y offset magnetometer Z offset magnetic declination (radians) raw pressure from barometer raw temperature from barometer gyro X calibration gyro Y calibration gyro Z calibration accel X calibration accel Y calibration accel Z calibration set the magnetometer offsets System ID Component ID magnetometer X offset magnetometer Y offset magnetometer Z offset state of APM memory heap top free memory