quiet ref
1421516000  21 Jan 2025 17:33:02 UTC  (21 Jan 2025 18:33:02 CET)
(anche 1 minuto prima)

amplified loudspeaker in POS 1 (in front of CT)
colored noise 8 - 2k Hz, level 0.004
using ENV_NOISE_MAG_WEB which is DAC ch 7 (because ENV_NOISE_WEB which is on ch 6 gives the usual spike!) 
17:46:41 UTC - 17:56:09

POS 2 
colored noise 8 - 2k Hz, level 0.004
18:00:58 - 18:06:01
Similar excitations ( just a bit more ALS_ACC, similar peaks in Hrec and B8

tapping 
SW holding point HOR  - broadband excitation
1421518492  21 Jan 2025 18:14:34 UTC  (21 Jan 2025 19:14:34 CET)
1421518564  21 Jan 2025 18:15:46 UTC  (21 Jan 2025 19:15:46 CET)

NE holding point - 200Hz and harmonics
1421518676  21 Jan 2025 18:17:38 UTC  (21 Jan 2025 19:17:38 CET)
1421518738  21 Jan 2025 18:18:40 UTC  (21 Jan 2025 19:18:40 CET)

NW holding point - 175 Hz 
1421518983  21 Jan 2025 18:22:45 UTC  (21 Jan 2025 19:22:45 CET)
1421519049  21 Jan 2025 18:23:51 UTC  (21 Jan 2025 19:23:51 CET)

tapping SWEB flange with bastone soft - broadband in hrec 
1421519386  21 Jan 2025 18:29:28 UTC  (21 Jan 2025 19:29:28 CET)
60s

tapping link pipe, middle, no noise in hrec
1421519730  21 Jan 2025 18:35:12 UTC  (21 Jan 2025 19:35:12 CET)
1421519805  21 Jan 2025 18:36:27 UTC  (21 Jan 2025 19:36:27 CET)

repeat SWEB flange with hammer - no effect
1421519898  21 Jan 2025 18:38:00 UTC  (21 Jan 2025 19:38:00 CET)
1421519972  21 Jan 2025 18:39:14 UTC  (21 Jan 2025 19:39:14 CET)

now with hammer perpendicular to pipe - peak at 165 Hz
1421520018  21 Jan 2025 18:40:00 UTC  (21 Jan 2025 19:40:00 CET)
1421520066  21 Jan 2025 18:40:48 UTC  (21 Jan 2025 19:40:48 CET)

SWEB chamber - nothing in hrec
1421520431  21 Jan 2025 18:46:53 UTC  (21 Jan 2025 19:46:53 CET)
1421520536  21 Jan 2025 18:48:38 UTC  (21 Jan 2025 19:48:38 CET)

Viewport AR side - hrec 90 Hz, B8 large noise at 230Hz - same frequencies excited in ENV_WE_ACC_Z (aslo in quiet)
1421520784  21 Jan 2025 18:52:46 UTC  (21 Jan 2025 19:52:46 CET)
1421520865  21 Jan 2025 18:54:07 UTC  (21 Jan 2025 19:54:07 CET)

SWEB, blind flange SWEB W side - 112 Hz in B8, corresponding peak in ALS_ACC and ACC_Z
1421521294  21 Jan 2025 19:01:16 UTC  (21 Jan 2025 20:01:16 CET)
1421521367  21 Jan 2025 19:02:29 UTC  (21 Jan 2025 20:02:29 CET)

WE tower belly, W side - 90 Hz and 167 peaks in Hrec and B8 photodiode, very similar to tapping viewport
1421521634  21 Jan 2025 19:06:56 UTC  (21 Jan 2025 20:06:56 CET)
1421521719  21 Jan 2025 19:08:21 UTC  (21 Jan 2025 20:08:21 CET)



Beating 123, 123.2
19:23 
1421522815  21 Jan 2025 19:26:37 UTC  (21 Jan 2025 20:26:37 CET)

beating 133, 133.2
1421522919  21 Jan 2025 19:28:21 UTC  (21 Jan 2025 20:28:21 CET)


beating 123.5 123.7
1421523128  21 Jan 2025 19:31:50 UTC  (21 Jan 2025 20:31:50 CET)


beating 123.5 123.6 (piu lento)
19:37 UTC to 19:40 

beating 95, 95.1
19:41:44 to 

beating 120, 120.1 Hz
1421523874  21 Jan 2025 19:44:16 UTC  (21 Jan 2025 20:44:16 CET)

beating 105.8, 105.9 (a peak at 105.8 was excited when doing acoustic injections)
1421524215  21 Jan 2025 19:49:57 UTC  (21 Jan 2025 20:49:57 CET)

beating 192.9, 193.0  - non modula...
1421524352  21 Jan 2025 19:52:14 UTC  (21 Jan 2025 20:52:14 CET)
1421524496  21 Jan 2025 19:54:38 UTC  (21 Jan 2025 20:54:38 CET)