In the Magnetic shielding txt file, the index starts from 0

[jkshenton]

Expanding on issue raised by @AKM2022

[dch0ph]

Agreed.

Can I suggest that the notation s_iso used in MV1 is better than "Isotropy" in MV2 [really is the isotropic component of the magnetic shielding.]?

I would also prefer using s_iso/ppm rather than either s_iso / ppm or s_iso (ppm). The '/' is IUPAC compliant. Lack of spaces means the header line can be easily parsed.