You can view the total number of article reads for stories published within the selected date range; however, the read counts are displayed from the time of publication up to the current date. On the detail page for each article, the read counts are limited to the selected date range.
Example
If you select the period from January 15 to January 22 and you are checking this on January 31, the list view will show stories published between January 15 and January 22, but the read counts will reflect the traffic from the publication date until January 31.
For instance, a story published on January 17 will have its read counts calculated from January 17 to January 31.
In contrast, when you access the detail page for that specific story, it will display the traffic only for the period from January 17 to January 22, corresponding to your selected range of January 15 to January 22.
Read also: Article list, Article page, and Reports differences