magnetometerInitialHardIronZ

Gets Y-coordinate of hard iron used as an initial guess and expressed in Teslas (T). This value is determined once the calibration starts. If magnetometerSensorType is MagnetometerSensorType.MAGNETOMETER_UNCALIBRATED, this will be equal to the value used internally by the device as part of the magnetometer hardware calibration. If magnetometerSensorType is MagnetometerSensorType.MAGNETOMETER, then magnetometer sensor measurements are assumed to be already hard iron compensated, and the initial hard iron is assumed to be zero. If isMagnetometerGroundTruthInitialHardIron is true, this is assumed to be the true hard iron, and estimatedMagnetometerHardIronZ will be equal to this value, otherwise estimatedMagnetometerHardIronZ will be the estimated hard iron after solving calibration, which will differ from magnetometerInitialHardIronZ.