[ENH]: add time frame information to time stamps
ATM IO only provides a time-stamp for given data.
But (following the terminology of the cf-conventions) there are extensive (do depend on the time-frame) and intensive (do not) quantities. Extensive quantities need the information about the time-span they refer to.
ATM this time-span is assumed as the difference between the last two time-stamps (AFAICT) but we don't provide further information.
Easiest approach IMHO would be to provide time bounds for each data point along with the time-stamp we already provide.
Further info:
- CF Cell methods: https://cfconventions.org/cf-conventions/cf-conventions.html#cell-methods
- CF Cell boundaries: https://cfconventions.org/cf-conventions/cf-conventions.html#cell-boundaries