2D distribution map of GC candidates in the observed field. Left panel: 2D map for the gr-matched catalogue obtained using bw_adjust = 0.14 and bw_method parameter set to Scott (see Sect. 6.1 for the definitions). The magenta and blue coloured areas represent an over-density of sources whereas the red and yellow-green coloured areas show the under-dense regions. The red coloured areas, mostly situated around the edges of the frame, are under-dense due to the low S/N because of the observing strategy. The position of the galaxies are indicated with crosses of colour yellow (NGC 5018), magenta (NGC 5022), cyan (MCG-03-34-013), orange (NGC 5006), light pink (PGC 140148). The white cross is the LSB dwarf galaxy candidate (NGC 5018-LSB1) reported in Sect. 6.3. Right panel: As in left panel, but using bw_adjust = 0.28. The black contours reported in both the panels indicate the regions higher than 5σ level from the background rms, obtained using bw_adjust = 0.28.