Dalton numeric factor outdated

[Crparedes]

The dalton conversion factor to kilograms in the knowledge base is not up to date.

SI Brochure 9th v3.02:

Value in https://si-digital-framework.org/SI/entities#units_20260303103151Z.ttl:

...
si:hasNumericFactor "1.6605390666e-27"^^xsd:float ;
si:hasNumericFactorAsString "1.660\\:539\\:066\\:60(50) \\times 10^{-27}"^^xsd:string ;
...

[Crparedes]

The outdated value comes from the SI Brochure 9th v3.01, superseded in August 2025 by version 3.02.

Data from SI Brochure 9th v3.01:

[Crparedes]

How do we represent the uncertainty of the conversion factor?

[stuchalk]

I don't see any semantic representation of the uncertainty in either of the concept files. So, it needs to be added.

[Crparedes]

Reopening until we deploy the updated files