(a) Histogram of relative orientations between intensity structures for different tracers and magnetic field in the whole Orion A region. The red, green, and blue solid lines represent the angle distribution in the lowest, medium, and highest intensity bins, respectively. (b) Histogram shape parameter calculated in different column-density bins in the whole Orion A region. The red solid line is the optimal linear fitting results between ξ and column density. The gray area represents the 1σ confidence interval of the fitted line. (c) Same as b, but for the relation between AM and column density.