Test has been repeated Monday 17th September, in order to have also a time whith FAN OFF and WATER and CHILLERS ON

Here the timetable (UTC):

13:18:00 +240S 13:22:00 ALL ON (reference time)

13:33:40 +290S 13:39:30 ONLY CHILLER and WATER ON (fan off)

13:39:50 +300S 13:44:50 ALL OFF
(subset 13:43:30 +100S 13:44:50  with no truks in FiPiLi)

13:45:45 +265S 13:50:10 ONLY FAN ON (water pumps, chillers, heaters are off)

Here a list of some relevant peaks (associated to the NEB HVAC system) disappearing in the acoustic or seismic sensors:

10 - 12Hz truks on FiPiLi ?

13.53Hz associated to the FAN system

20.60Hz associated to the FAN system

24.26Hz ALWAYS PRESENT

24.90Hz associated to the FAN system

33.70Hz associated to the FAN system

40.35Hz associated to the FAN system

41.70Hz ALWAYS PRESENT

43.90Hz ALWAYS PRESENT

44.60Hz ALWAYS PRESENT

45.45Hz ALWAYS PRESENT

46.15Hz ALWAYS PRESENT

47.35Hz associated to the WATER/CHILLER system

48.60Hz associated to the WATER/CHILLER system

Attached some spectrograms and some plots (Black is all OFF, Red is ALL ON, Blue is only FAN ON, Green is only WATER/CHILLER ON)