Analysis of the station inspection plots for observation L570725. Top row: good station CS001 (panels a, d, g). Middle row:bad station CS101 (panels b, e, h). Bottom row: incoherent (not phased) sum of all stations. Left column (panels a–c): station inspection plots. Each plot has been normalized by an average background. Large scale features are seen foe the bad station CS101. Middle column (panels d–f): integrated spectra (Q1b) derived from the station inspection plots. Right column (panels g–i): time-series (Q1a) derived from the station inspection plots. No large bumps are seen within 20–30 MHz for the bad station (CS101), therefore they do not seem to be cause of the L570725 ON-beam signal seen in Fig. 5.