Historics Preview lets you examine up to 25 targets at a time over a maximum of 30 days. Those limits exist to make sure that you get results quickly. You can look at the same target over consecutive 30-day periods to cover weeks, months, or years, but you will need to combine those results yourself. Unlike Historics queries, Historics Preview returns results of data analysis instead of raw data (interactions). If you want both, run a Historics Preview job and a Historics query using the same stream.
Historics Preview Types
There are four types of preview that you can request:
For the list of targets and the types of preview that can be performed on them, see our downloadable list.