In the seiproc model we have some code that produces IFO basis ground motion channels i.e.: XARM_GND=ETMX_X_GND - ITMX_X_GND. There's X/Y arm and CARM and DARM channels.  They've in for years, but I'm not sure that much has been done with them. While talking to Neil about some earthquake stuff, I realized we don't have blrms calculated for these IFO dof ground channels, something that might be really useful for earthquake or microseism studies.So, I've filed ECR E2400233, channels went in at LHO yesterday. I'll let Huyen know, but the seiproc model parts aren't common between the sites.