SR2's Yaw oscillation has been increasing for the last week up to 8 urad from the last report by ushiba-kun. It should be mitigated. It could be the reason for the short lock. (Fig.1)

The frequency is about 0.19 Hz. (Fig.2)

This oscillation growing up seemed to start on June 2nd Friday or on May 31st (Fig3,6). There was an M6.4 earthquake at Tokachi at the same time, denoted by the dotted line in Fig.3. While another M6.1 earthquake happened on May 31st, and it matched with the oscillation glowing up timing(Fig.6).  So some seismic noise excitation seemed to change the SR2 suspension conditions.

SR2 Oplev values are not so bad? or yaw is near 100urad (Fig.5). No big changes at the big earthquake timing (Fig.7).