When is Inferred Info Captured

Hi Marketo Community,

Does anyone have a doc with concrete of when inferred info was captured?

I was always under the impression that inferred geographical information is captured when a lead fills out a form or clicks a link in the email.

For Example, I recently ran a campaign that said If a lead is in Nevada OR Inferred State is Nevada, send local offer.

After sending the campaign I wanted to compare the inferred information that was captured on leads who clicked links (that previously had no inferred geographic information), so i could compare it to the information that we already had. When i looked a leads that clicked links there isn't any inferred geographical information.

Any info would be appreciated!

-Ryan