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Fig. 7.

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Model-calculated maximum and minimum SFRs in terms of pitch angle (θ) for 79 spiral galaxies. The solid and dotted black lines indicate the maximum and minimum of theoretically estimated SFRs at SFE = 100%. The colored solid lines are the maximum SFRs at different SFEs. The solid blue circles represent the observed SFRs (SFRObs) (Catalán-Torrecilla et al. 2015). See the text for details.

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