Distributions of host-galaxy interstellar reddening E(B − V) for type Ia SNe originating from nine specific locations within the dust disc of a disc-dominated (B/T = 0) LT galaxy. The locations are distributed on a grid with (cylindrical) radii R running across the columns and disc heights z across the rows. Galaxy-observer orientations are assumed to be random and the parameters of the dust disc are listed in Table 1. Due to an asymmetry between disc-SN-observer and SN-disc-observer orientations, the local distributions are bimodal for layers above the disc plane. The reddening distributions peak at E(B − V) > 0 and vanish at E(B − V) = 0 for z ≲ h_d.