Upper plot: difference between the position angle of our sample galaxy, and the position angle of the line drawn from the galaxy to the closest FCC galaxy with M_r′ < −18 mag. Bottom plot: difference between the position angle of our sample galaxies and the position angle of the line drawn from that galaxy to NGC 1399. The red and the black dots correspond to the galaxies with b/a < 0.7 and <0.9, respectively. The vertical histograms show the number distributions of the points in the scatter plots. The red and black histograms correspond to the red and black points, respectively.