I measured the trasfer function from TML to DARM by using BS.
Figure 1 shows the result.
The data was stored at /users/Commissioning/data/NoiseBudget/TFs/2022/1007/TF_BS_TMLtoDARM_1007.xml

The slope is almost f^-2, which is consistent with theoretical one.
Noise projection to DARM from MICH feedback will be calculated soon.