Most confusing chart of the day

The most confusing chart of the day award goes to:

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from Ide and Ophir. Orientation development in thermotropic liquid crystal polymers. Polymer Engineering and Science (2004) vol. 23 (5) pp. 261-265. Depicted are three values (tensile modulus, tensile strength, and area reduction) for five datapoints. Three scales appear on two y-axes. I think that this plot means that the tensile modulus for the extrudate decreases with increasing shear rate; I'm not sure why I should care about the other two variables because they don't look like they change very much, but it's hard to tell, because they are also on a smaller visual scale than the tensile modulus.