The first field of variant the provider did not declare, or null when it
can serve all of it. The default variant is always served. Without a
declaration only the default is: a provider that never said it serves
extended hours cannot be trusted to have honoured the request, and a
regular series labelled extended is worse than no chart.
The first field of
variantthe provider did not declare, or null when it can serve all of it. The default variant is always served. Without a declaration only the default is: a provider that never said it serves extended hours cannot be trusted to have honoured the request, and a regular series labelled extended is worse than no chart.