Is there a standard for representing the time interval of a measurement?

Any actual measurement is made at a point in time with, perhaps, an interval over which it is considered valid. For example, a census datum on a State's population for the year 1990 would be associated with the interval 1990/01/01T00:00:00.0000 duration 1 year.

  • $\begingroup$ You could assume that the value is correct until the next time step present in the data -- is that what you mean? $\endgroup$ – Sean Owen Mar 16 at 13:56

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