The data available in the catalogue can be provided in different formats. The list is not yet finalised and is subject to the publication of new datasets. Below are the main formats we work with:

PDF. These are documents in a universal portable file format which maintain the appearance of the document regardless of the operating system used (multi-platform). This includes any combination of text, multimedia and hypertext. Documents may also be encrypted and have digital signatures. As of 2008, it is the ISO standard for digital document files for long-term storage. This is a format which can be created, viewed and modified with open source software tools. It was originally a proprietary format (until 2008).

CSV. This is a simple open document type for data in table format. Data records are stored in lines, with individual values separated by commas (or semi-colons when the comma is used as the decimal marker), and columns defined by line breaks. Fields which have a comma, a line break, or a colon must be bracketed with double quotation marks. The CSV file format does not require a specific character encoding, byte order, or line terminator format. Extensions used are .csv and .txt.

SHP. Shapefile is a proprietary format of spatial data which is the standard for exchanging geographic information between GIS (Geographic Information Systems). It is a vector-based digital storage format which records the location of geographic elements and attributes associated with them. It cannot store topographical information. There are at least three file extensions for this format: .shp, .shx and .dbf.

WMS. This format interactively generates maps using data on spatial relationships based on geographic information. It is an international standard. WMS maps are generally generated as PNG, GIF or JPG images, or optionally as vector graphics in SVD or WebCGM format.

XML. The Extensible Markup Language (XML) is a simple text-based format for representing structured information: documents, data, configuration, books, transactions, invoices, and much more. It was derived from an older standard format called SGML (ISO 8879), in order to be more suitable for Web use.

XLS. This format has rows and columns of cells, each of which may contain data (this may be words, numbers, or formulas with data which can provide output from multi-variable calculations). XLS spreadsheets can also have tables and graphs which show all sections or only a certain data set.