Averaged Stokes I profiles of the four photospheric Fe I lines centered at 5250.21 Å (a), 6173.34 Å (b), 6301.51 Å (c), and 6302.50 Å (d) whose Stokes V profiles are analyzed in this paper. The circles indicate the sampled wavelength positions. The green, blue, and red circles (with crosses, minuses, and plus signs) mark those wavelength positions from which the averaged in-line, far-blue-wing, and far-red-wing Stokes V images used for event detection are constructed.