Cookies and Privacy

Cookies & Analytics

Like many websites, we use Google Analytics to measure how the site is used. The information we gather cannot be used to identify you; the system uses cookies to build aggregated data such as the numbers of pages that visitors read, the numbers of visits referred by each major search engine and to distinguish between new visits and repeat visits.

This website does not use any other cookies.

Cookie Usage

From Google’s information about the cookies the system sets in your browser:

Google Analytics code uses first-party cookies to:

  • Determine which domain to measure
  • Distinguish unique users
  • Remember the number and time of previous visits
  • Remember traffic source information
  • Determine the start and end of a session
  • Remember the value of visitor-level custom variables

Google Analytics sets the following cookies:

Cookie Name Default Expiration Time Description
__utma 2 years from set/update Used to distinguish users and sessions. The cookie is created when the javascript library executes and no existing __utma cookies exists. The cookie is updated every time data is sent to Google Analytics.
__utmb 30 mins from set/update Used to determine new sessions/visits. The cookie is created when the javascript library executes and no existing __utmb cookies exists. The cookie is updated every time data is sent to Google Analytics.
__utmc End of browser session Not used in ga.js. Set for interoperability with urchin.js. Historically, this cookie operated in conjunction with the __utmb cookie to determine whether the user was in a new session/visit.
__utmz 6 months from set/update Stores the traffic source or campaign that explains how the user reached your site. The cookie is created when the javascript library executes and is updated every time data is sent to Google Analytics.
__utmv 2 years from set/update Used to store visitor-level custom variable data. This cookie is created when a developer uses the _setCustomVar method with a visitor level custom variable. This cookie was also used for the deprecated _setVar method. The cookie is updated every time data is sent to Google Analytics.

Taken from https://developers.google.com/analytics/devguides/collection/analyticsjs/cookie-usage

You can use your browser’s settings to prevent this, or any, site setting cookies, though be aware that some sites may rely on cookies to function properly. Google has also developed a browser add-on that allows you to turn off Google Analytics completely for your browser: https://tools.google.com/dlpage/gaoptout?hl=en