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. 2018 Jul 10;13(7):e0200025. doi: 10.1371/journal.pone.0200025

Fig 2. Modeled probability of an experimental fracture (%; Y-axis, left side) in relation to the mineral density of the keel’s base (mg/cm2; X-axis) and the presence of an old break.

Fig 2

Superimposed on the graph is a histogram of the number of keels (#; Y-axis, right side) assessed.