> ## Documentation Index
> Fetch the complete documentation index at: https://docs.intuitibits.com/llms.txt
> Use this file to discover all available pages before exploring further.

# The History inspector

> Signal, noise, and SNR history for a selected network in WiFi Explorer Pro 3.

The <img className="inline-block dark:hidden" src="https://mintcdn.com/intuitibits/Di6af71C_bFYQFwl/images/inspectors/historyInspector.png?fit=max&auto=format&n=Di6af71C_bFYQFwl&q=85&s=b2742e39dd96991752b1f1a95e4dfefd" alt="" width="16" data-path="images/inspectors/historyInspector.png" /><img className="hidden dark:inline-block" src="https://mintcdn.com/intuitibits/Di6af71C_bFYQFwl/images/inspectors/historyInspector-dark.png?fit=max&auto=format&n=Di6af71C_bFYQFwl&q=85&s=0a24ddb16e43b96b2741579fd736c38f" alt="" width="16" data-path="images/inspectors/historyInspector-dark.png" /> *History* inspector shows the list of data points and the average, maximum and minimum values for signal (RSSI), noise, and SNR (Signal-to-Noise Ratio) for a particular Wi-Fi network.

The following table lists the columns available in the *History* inspector and their support in active and passive scan modes:

| Column              | Description                                                                                         | Active scan mode | Passive scan mode |
| ------------------- | --------------------------------------------------------------------------------------------------- | :--------------: | :---------------: |
| Timestamp           | Date and time of the data point.                                                                    |        ✔︎        |         ✔︎        |
| Signal              | Received signal strength indicator (RSSI) of the wireless network as dBm.                           |        ✔︎        |         ✔︎        |
| Noise               | Background noise level as dBm.                                                                      |        ✔︎        |         ✔︎        |
| SNR                 | Signal-to-noise ratio (SNR) of the wireless network as dB.                                          |        ✔︎        |         ✔︎        |
| Clients             | Number of clients associated to the network.                                                        |                  |         ✔︎        |
| Stations            | Number of clients currently associated to the access point radio (QBSS-enabled access points only). |        ✔︎        |         ✔︎        |
| Channel Utilization | Percentage of time the AP sensed the medium (channel) as busy (QBSS-enabled access points only).    |        ✔︎        |         ✔︎        |

You can export all the data points in CSV format. To export them, click **Export**.

## See also

* [Find networks using the built-in Wi-Fi adapter](/wifiexplorerpro3/find-networks-using-built-in-adapter)
* [Find networks using other scan sources](/wifiexplorerpro3/find-networks-using-other-scan-sources)
* [Read and display data from capture files](/wifiexplorerpro3/read-and-display-data-from-capture-files)