Cripes, I confused datasets, the SSF plots to which I posted the link are actually a collection assembled by the Open Film Tools folks. The link to their page:
https://www.hdm-stuttgart.de/open-film-tools/english/camera_responsivities
The revised link to my page:
https://glenn.pulpitrock.net/openfilmtools_ssf_plots/
I’m still trying to find their license for it; if I can’t find one, I’ll probably take it down.