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