By default all subscribers from the opt-in forms are stored in Local Mailing List (Default). The subscribers list can be found under Opt-in Samurai > Subscribers in your WP Admin area.
You can remove the subscribers from this section and export to CSV as well.
Deleting a subscriber is permanent and cannot be undone!
The Location section displays the subscriber’s actual geo location based on his/her IP address when submitting the information.