OLCI Spectral response function

Hi, I hope this topic belongs on the forum.
I am trying to apply the OLCI spectral response function to my in-situ data. I have the SRF file for Landsat in Excel and think I understand how to use it, basically as a weighting function for each wavelength in each band that I multiply my in-situ data with?
But I don’t understand the OLCI nc4 file. I can open it in R using tidync and look at the variables but I don’t know how to access the weighting functions for the bands. Can anyone give me some tips on how to do this in R or Matlab?