There are multiple definitions - click on the translation that matches your context.

Augenschein

Substantiv

neolog

observational evidence

Comparative law notes

Switzerland

This translation is not perfect since this type of evidence may be the result of any kind of "sensory" perception: seeing, hearing, touching, smelling or tasting. Thus, an alternative and more accurate translation might be "sensory evidence", but observational evidence seems to be the most commonly used translation of this concept.