Distribution of reduced χ² values for inclination i and covering half-angle α of disk-like BLR models for 3C 120. The inclination starts at i = 5° (and not at i = 0°), and the grid is in steps of 3° for both i and α. The black crossed square marks the place of the minimum χ² found at i = 5° and α = 10°. The inner and outer radius of the disks is 22 days and 28 days, respectively.