code: def expected_magy(RAW_IMU, ATTITUDE, inclination, declination):
      '''estimate  from mag'''
      v = expected_mag(RAW_IMU, ATTITUDE, inclination, declination)
      return v.f expected_magy(RAW_IMU, ATTITUDE, inclination, declination):
      '''estimate  from mag'''
      v = expected_mag(RAW_IMU, ATTITUDE, inclination, declination)
      return v.y
docs: estimate  from mag