Accessibilityrefers to the physical conditions in which users can obtain data: where to go, how to get access, delivery time, convenient marketing conditions (copyright, etc.), availability of micro or macro data, various formats and data carriers (paper, files, CD-ROM/DVD, Internet), etc.
Clarityrefers to the degree of comprehensibility, including data information environment, i.e. whether data are accompanied by appropriate metadata, illustrations such as graphs and maps, whether information on their quality is available (including limitations on use) and the extent to which additional assistance is provided.
Punctualityrefers to the time lag between the release date of data and the target date when it should have been delivered, for instance with reference to dates announced in official release calendars, laid down by Regulations or previously agreed among partners.