| Cookie | Duration | Description |
|---|---|---|
| __utma | 2 years | This cookie is set by Google Analytics and is used to distinguish users and sessions. The cookie is created when the JavaScript library executes and there are no existing __utma cookies. The cookie is updated every time data is sent to Google Analytics. |
| __utmb | 30 minutes | Google Analytics sets this cookie, to determine new sessions/visits. __utmb cookie is created when the JavaScript library executes and there are no existing __utma cookies. It is updated every time data is sent to Google Analytics. |
| __utmc | session | The cookie is set by Google Analytics and is deleted when the user closes the browser. It is used to enable interoperability with urchin.js, which is an older version of Google Analytics and is used in conjunction with the __utmb cookie to determine new sessions/visits. |
| __utmt | 10 minutes | Google Analytics sets this cookie to inhibit request rate. |
| __utmz | 6 months | Google Analytics sets this cookie to store the traffic source or campaign by which the visitor reached the site. |