Today's morning, BS, ITMX, and ITMY were aligned by Ushiba-kun for checking the current status of MICH fringe.

I checked the PD signals at the relevant time. Then, MICH fringe can be seen with the enough quality to do the ellipse fitting of the scatter plot of POP17Q and POP DC as shown in Fig.1.
Now fringe amplitude is not so stable and fitting doesn't converge with longer data than 20-30s (See also Fig.2).

Seeing PD signal with Oplev signals of BS, ITMX, and ITMY, fringe amplitude seems to be correlated with BS Yaw motion according to Fig.3. Stability should be checked again after the pumping down in the center area.