Relation between the offset from the main-sequence relation log SFR/SFR_MS and the HI-deficiency parameter: Late-type galaxies (≥Sa) are indicated by black symbols, early-type galaxies by red symbols, circles stand for HI detected sources, and triangles stand for HI undetected objects (lower limits to the HI-deficiency parameter). Filled symbols show HI gas-rich objects (HI-def ≤ 0.4), and empty symbols show HI-deficient objects (HI-def >  0.4). The data are compared to the predictions of models for starvation (magenta) and ram-pressure stripping (cyan) derived for a galaxy with a rotational velocity 70 km s⁻¹ and spin parameter λ = 0.05. The filled green square indicates the prediction for an unperturbed system. Different symbols in the models indicate the position of the model galaxies at a given look-back time from the beginning of the interaction.