(i) Short-term statistics (STS) give information on a wide range of economic activities according to NACE Rev.2 classification (Statistical Classification of Economic Activities in the European Community). (ii) All data under this heading are index data. Detailed definitions of each indicator can be found in the Commission Regulation 1503/2006. (iii) Euro area, European Union, EU individual Member States and EFTA countries. (iv) The production of indices within Member States is normally based on the compilation of data from numerous sources. Detailed methodological information about Member States practices is available in the national reference metadata http://ec.europa.eu/eurostat/cache/metadata/en/sts_esms.htm#annex and the STS sources.