code: def add_gtc_header_table_row(t, telpars):
      
      now = Time.now().mjd
      hdr = create_header_from_telpars(telpars)
  
      # make dictionary of vals to put in table
      vals = {k: v for k, v in hdr.items() if k in VARIABLE_GTC_KEYS}
      vals['MJD'] = now
      # store LST as hourangle
      vals['LST'] = Longitude(vals['LST'], unit=u.hour).hourangle
      t.add_row(vals)
docs: Add a row with current values to GTC table
  
      Arguments
      ---------
      t : `~astropy.table.Table`
          The table to append row to
      telpars : list
          list returned by server call to getTelescopeParams