Deviations Δ_λ(t) of the N100 SN Ia spectra due to microlensing for different times after explosion. The panels and labels are in the same format as in Fig. 2. In the early phase (≲10 rest-frame days after explosion), the 1σ range of the deviation is within 1% and most of the 2σ range is within 10% except in the UV, where the 2σ range could reach ∼20% owing to the early suppression of UV flux in N100.