I'm looking for a way to export the results from a query in the "Long term data" where I set the date range of February 15th 2018, 00:00 - February 19th 2018, 23:00 for a specific IP address. Is there a way to do this from the web GUI or from the log file(s)?
No, we don't offer a solution for this.
However, the long term data is stored in a standard (SQLite3) database. There exists a variety of tools useful to query, analyze and export data.