We use the website analysis tool Matomo to analyze user behavior and the reach of our website. This sets the cookie "_pk_id". By using Matomo, 2 bytes of your IP address, the website accessed, the referrer website (website from which you reached the website accessed here), the subpages accessed from the website accessed, the time spent on the website and the frequency with which the website is accessed are determined and stored. This serves the sole purpose of obtaining anonymized statistical data on how you use the website. The storage period is 6 months in the case of the cookie pk_ref and 30 minutes in the case of the cookie _pk_ses.