The second graph is a typical example just as McCree is in general.

The third graph is simply another way of considering this second graphs data, in terms of Pr minus Pfr. You can generate this graph yourself or find one of the published examples.

Our graphs are in Watts per 5nm band for "Sensitivity" or "Response", but the absorption relationship is still there for concept.

Get the third graph and consider it next to the first and I think you'll see things with a new perspective conceptually about photosynthesis and hopefully phytochrome ballancing.

Take care, Sal.