Amplitude of the bump. Left and Middle: ratio between the bump amplitude and the underlying continuum as a function of the 5780 and 6284 Å DIB EW normalized to the reddening. The values correspond to the A(λ)/A_V extinction curve. The color scale refers to the LOS extinction, A_V, as in Figures 1–2. Note the difference between FLAG 1 ((top) and FLAG 0 (bottom) LOSs. Right: amplitude of the bump for the two DIBs: the fit linear relationships are for Flag 1 LOS (black line) and Flag 0 LOS (pale blue line). The corresponding slopes are 7.2 ± 1.4 10⁻⁴, −3.2 ± 1.8 10⁻⁴, 2.1 ± 0.6 10⁻⁴, and 5.7 ± 7.2 10⁻⁵ for 5780/FLAG1, 5780/FLAG0, 6284/FLAG1, and 6284/FLAG0.