thus far from the one-to-one correspondence. The behavior of the Faraday depth is so complicated that it is difficult to find the correspondence between the peaks in the FDF and those in physical space. This is the generic situation and simple behaviors of the two cases in Figures \[fig:f1\] and \[fig:f2\] are rather exceptional. Thus, as we saw above, the FDF look very different even for a fixed set of global parameters and is highly dependent on the different realizations of turbulent components which determine the behavior of Faraday depth.

We also calculate FDFs of the whole region in x-y plane ($500~{\rm pc} \times 500~{\rm pc}$) which corresponds to a beam size of $10'' \times 10''$. Figure \[fig:f4\] shows the FDF integrated over this region as well as those of the four quadrant ($250~{\rm pc} \times 250~{\rm pc}$). We see that the integrated FDF is much broader and smoother compared with those in Figures \[fig:f1\] - \[fig:f3\]. Such broadening and smoothing is ascribed to the fact that each quadrant contributes to a different part of the total FDF, shown as color lines. The result demonstrates that an observation with a larger beam size produce a broader and smoother FDF, in 