I attach a summary list of major Hrec lines and peaks whose origin and/or coupling path we understood. The lines have been taken from the Hrec senistivity spectrum of Sept 28, 13:50. 30.5Mpc, using 3s fft resolution. Figure1 is a reference plot, also reported are the O3 design sensitivity from gwinc. Lines are divided into "families": 

• BJ = beam jitter,
• FIFTY = mains and harmonics,
• CALIB = calibration lines,
• SSFS = Frequency noise,
• DAQ = aliasing or mixing,
• MODES = mirror modes,
• SDB1 = scattered light from SDB1,
• WALLS = scattered light from tower walls.

The list contains also references to elogs which better describes each line or group of lines.

All of them are now also in the known line database. Note: violin modes are still missing in the list and in the dataBase... simply because they are many.