How to handle attribute dates

[rtmill]

With the data source table, we have the information for when the data set was collected as a whole and what timeframe it represents. When we store a measurement from these data sets, what logic do we use to determine the date of the measurement itself.

For instance, in the EPA data set we have a 'mean value of measurement x for sensor y for the year 2017'. In this circumstance, the data_source contains all needed date information, do we want to replicate that in the attribute table?

An additional example, there is also columns for 'max value' and 'date of max value'. For that record, which date do we use?