In case you don't see the figures attached please click here: 14589.

The measurement reported in the commented entry provides -OLTF rather than the OLTF directly.  Additionally, it's worth saying the measurement assumes the effect of ground motion to be negligibe compared with the effect of the white noise with which the system was actuated.

Results

After the sign correction the results are as follows:

DC control OLTF: UGF: 8 mHz, phase: -83 degrees

AC control OLTF

• UGF: 43 mHz, phase: 129 degrees,
• UGF: 94 mHz, phase: -30 degrees,

Total DC + AC control OLTF

• UGF: 6 mHz, phase: -98 degrees,
• UGF: 47 mHz, phase: 41 degrees,
• UGF: 90 mHz, phase: -151 degrees

Commets

In the total OLTF:

• The phase at 406 mHz is -220 degrees
• The phase at 671.9 mHz the phase is -200 degrees.