Spectral peaks in Hrec_hoft that have some significant coherence with ENV channels

Analyzed period: 600s starting from 25 June 19:16 UTC (full bruco table: https://scientists.virgo-gw.eu/DataAnalysis/bruco//2018-06-25/)

43.6 Hz (very small): seismic line present in many ENV accelerometers in CEB

48.3 Hz: line is present and coherent in the ACC at SQZ pipe, which (judging from the spectral shape is NOT working or polluted by large and electronic noise... to be inspected)

257.1 Hz (small): coherent with several ENV accelerometers in CEB, but none shows a shaped peak at this frequency

271.6 Hz (small): same as above

285.6 Hz: same as above

289.3 Hz (small): same as above

333.3 Hz: small coherence with several seismic sensors in CEB, there is one large peak in NI crryoTrap accelerometer at this frequency, but coherence is very small

384.0 Hz: some 0.4 coherence with ENV accelerometer on DT tower, no corresponding spectral peak

392.0 Hz: some 0.4 coherence with many accelerometers in CEB, all see a corresponding spectral peak (seems very narrow).

401.0 Hz: very small coherence with ENV accelerometers at DT tower, all see a large peak (we know this is the operationg frequency of Turbo pumps)

418 Hz: small coherence (<0.1) with accelerometers, largest cohe with accelrometer at DT East flange (this is among the peaks that were excited by tapping DT)

428 Hz: as above (also among the DT tapping peaks)

432 Hz: some coherence (0.5) with accelerometers around DT  tower, they also show a corresponding bump (interesting!)