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InfluxDB
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These are called the soft and hard iron biases. You'll need to calibrate your magnetometer to remove these. Have a read here: https://www.vectornav.com/resources/magnetometer-errors-calibration and then have a read here: https://github.com/kriswiner/MPU6050/wiki/Simple-and-Effective-Magnetometer-Calibration for a simpler method.
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