> For the complete documentation index, see [llms.txt](https://helps.ptengine.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://helps.ptengine.com/en/insight/data-center/trend-chart.md).

# Trend Graph

> **SUCCESS**
>
> **What is the Trend Graph?**
>
> This is a graph positioned at the top of the access report displayed by opening the digest. This graph is a tool for visually understanding changes in visit counts.

## Data Visible on the Screen

Default display: Trend of visits over the past week

After specifying period: Displays the trend of the specified period as a green curve

Display unit switching: Selectable from "Daily," "Weekly," "Monthly" When only one day is specified: The horizontal axis becomes a time unit, allowing detailed change confirmation

Metric switching: Can switch to other metrics such as UU, PV from the "Visits" dropdown list

## **Quick Explanation of Key Metrics**

* **Visits**: A user visiting a site and then leaving is recorded as one visit.
* **UU (Unique Users)**: Visit count after removing duplicate visits
* **PV**: Number of times a page was viewed
* **New User Rate**: New users (visits containing new cookies) / Total visits
* **Return Visitor Rate**: Existing users (visits containing existing cookies) / Total visits
* **Visits / UU**: Number of visits / Unique users
* **PV / UU**: Page views / Unique users
* **Average Visit Duration**: Average time each visit lasted on the site
* **Bounce Rate**: Number of visits that viewed only the landing page / Total visits
* **Average Load Time**: Average time from the initial page request to completion of page load for each visit

For more detailed definitions, please refer to [Glossary](/en/insight/data-center/trend-chart.md).