Attached is a pre-ER7 list of narrow lines seen above 5 Hz in recent H1 DARM data, along with spectra containing labels for the lines.

The spectra used for line-hunting are from 18 hours of DC-readout conditions on May 17. Most of the lines were also seen
in the early-May mini-run data, but are more exposed in the more sensitive May 17 data (see figure 1)

Notable combs / lines:

 Exact integers: 16.0000 Hz, 64.0000 Hz (distinctly louder than other 16-Hz lines), 81.0000 Hz, 1150.0000 Hz, 1672.0000 Hz, 1704.0000 Hz, 1880.0000 Hz, 1896.0000 Hz
 Nearly exact-integer combs: 

 3.9994 Hz (offset by ~2 Hz from zero, first visible harmonic at 13.9977 Hz -- these seem to correlate with a near 4-Hz comb starting at 2 Hz in EX magnetometers (and to a lesser degree in EY magnetometers), where the contamination in DARM at 10 Hz and below is presumably too faint to be seen in the rapidly rising DARM noise. A strong comb is apparent in PEM FScans.
 99.9989 Hz (correlated with magnetometers in EX - see NoEMi and PEM FScans)

 Quad suspension violin modes with fundamentals near 500 Hz are not quite truly harmonic, but some of their upconversion is (see figure 2)
 Especially pervasive combs: 3.9994 Hz (34 harmonics), 16.0000 Hz (124 harmonics), 60.0 Hz (9 harmonics), 64.0000 Hz (31 harmonics), 36.9733 (54 harmonics), 59.9954 (6 harmonics), 99.9989 (13 harmonics)
 There are tentative identifications here of lines near 300 Hz and their harmonics as due to beam splitter violin modes, but their frequencies shifted by several mHz between the mini-run and the May 17 lock stretches, unlike the quad suspension violin modes which hardly moved at all (attributable to temperature?)
 Designated calibration line frequencies are shown on the spectra even when there is no apparent line (some not yet enabled?)

Notes:

 Because the binning in the spectra is 0.5 mHz (based on 30-minute FScan Hann-windowed SFTs), but the line widths in the plots are much larger, the spectra shown here look awful (but aren't). Dewhitening applies five poles at 1 Hz and five zeroes at 100 Hz.
 I didn't bother labeling the forest of bounce/roll-mode sidebands on the quad suspensions and their harmonics
 Although the 1150-Hz line seems well centered on the integer value, its energy is spread over several tenths of a Hz, unlike other integer-Hz lines
 Many line frequencies are give to four digits after the decimal point, but their statistical uncertainties are typically no better than a few tenths of a mHz, and based on changes between early and mid May, some lines have systematic drifts of O(mHz).
 With one exception, the quad violin mode fundamental frequencies were determined from the mini-run data, where they were more excited than on May 17. Those frequencies agree (independently) to within 2 mHz (in most cases, to better than 1 mHz) with the frequencies measured for individual test masses here. The one exception was that I had originally marked 504.1492 Hz as a mode in the mini-run, while the earlier study had found a mode instead at 501.254 Hz. Since the earlier measurements are guided by test-stand data, I am deferring to them and tagging 501.2544 Hz here, since I do see a line there in the mini-run data, albeit weaker than other modes.


Key to spectra labels:

b = Bounce modes
r = Roll modes
C = Calibration lines
L = Lock-in oscillator
M = Power Mains comb
N = Near to power mains comb
S = 64 Hz comb
s = 16 Hz comb
F = Near to 4 Hz (3.9994 Hz) comb
H = Near to 100 Hz (99.9989 Hz) comb
D =  59.3155 Hz comb
E = 36.9733 Hz comb
G = 75.23 Hz comb
Q = Quad violin modes
B = Beam splitter violin modes
x = Miscellaneous singlets

Figures:
1 - Superposition of 0-2000 Hz spectra for minirun (29.5 hours) and May 17 data (18 hours)
2 - Quad violin mode regions for first three harmonics (actual modes are non-harmonic, but some upconversion of fundamental is propagation harmonically)
3 - May 17 spectrum with labeled lines

Other attachments:
1 - Ascii list of narrow lines / combs found in 0-2000 Hz
2 - zipped tar file of 27 sub-band spectra (mostly 100-Hz wide)