6-Month Organic Decline
The 6-Month Organic Decline report in Osiris
This report shows the URLs on your site that have been in a declining state of organic traffic over the last 6 months. We map their trajectory via a linear regression of daily traffic, essentially drawing a best fit line over the daily traffic graph.
We then compute the "lost traffic" by comparing the traffic they would have earned with a "flat line" to the traffic they earned with their declining line. The reason for this is that it effectively combines the steepness of the decline with the magnitude of the decline to approprimate the "biggest losers" and heat maps accordingly.
This view is a simple heatmap chart with the following fields:
URL: the URL in question
Lastmod: the last intervention date with the URL, for reference.
Keyword: the keyword targeted by the URL, if known/applicable.
Views: the number of organic views it has received in the last 6 months.
Estimated Loss: this is the heatmap field, and it's our estimate of the lost traffic compared to a flat traffic graph. The redder the field, the more the loss.
This is a simpler way to reason about refresh candidates and triage traffic loss. It fails to take traffic expectations and potential into account, but it's an accurate view of where organic declines are coming from and which URLs are declining.
Here is what it looks like:

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