Export CSV
There are two ways to export feed data as CSV:
Graph view: export what the graph shows, with several feeds on the same timestamps.
Feeds page: export a whole feed or a long period.
From the graph view
Open the feeds in the graph view and set the time window and interval.
Click CSV Export.
Choose the options:
Time format: Unix timestamp, Seconds since start or Date-time string.
Null values: Show, Replace with last value or Remove whole line.
Headers: Show name and tag, Show name or Hide.
Click Download, or Copy to copy to the clipboard.
With several feeds, keep Null values set to Show so that each row lines up on the same timestamp.
Each request is limited to 70,000 datapoints per feed by default (max_datapoints in settings.ini). For more, use a longer interval or export from the feeds page.

From the feeds page
On the Feeds page, tick the feeds to export.
Click Download in the toolbar.
Set Start date & time, End date & time, Interval and Date time format.
Check the Estimated download size and click Export.
Interval can be the original feed interval, a fixed interval from 5 seconds to 12 hours, or Daily, Weekly, Monthly or Annual.
