There was a period of substantial glitchiness today (June 16) from 4 to 6:30 UTC. Hveto finds it to be related to the EX susrack magnetometers. The glitches in the susrack seem to come in bursts of a few seconds, with most power below 60 Hz. An example Omega scan is attached. Was there anything plugged in or changed at EX when doing PEM injections or during maintenance? If not, maybe something electronic has broken - we'll keep an eye on it and see when it recurs.