Salut @nonophuran,
I happen to have an X-Rite i1Display Pro, which I have never used to “calibrate” ambient light. Is that what I could do?
Yes, it could be of assistance to you, showing what spectrum
your LED panel really emits (especially the R9 value and TLCI).
Then you can compare with other LED makes Spectral emissions from modern light sources (more graphs added).
Are you sure about CRI 97? Nanguang states CRI 95.
Have fun!
Claes à Lund, La Suède