BV4.1 is a time series analysis method for decomposition and seasonal adjustment of monthly and quarterly economic series.
For detailed information on the mathematical methodology please see Speth, H.-Th.:
Methodenberichte, Heft 3/2004.
The Federal Statistical Office provides the respective software as a free download for non-commercial purposes.
Download of version 2.2 of the software for Windows operating systems from Windows 7 (zip, 14.5 MB)
Modification of version 2.1: Reformation Day on 31 October 2017 treated as a public holiday in the calendar files for Germany.
Other system requirements:
• Java Runtime Environment (JRE) from version 1.7.0
Usable file formats:
• CSV,
• from EXCEL 2002,
• from ACCESS 2002 or
• from SQL-Server 7.0.
Download of version 1.1 of the software for Windows operating systems up to Windows XP (zip, 31.9 MB)
Please note: this version of the software does not treat the Reformation Day of 2017 as a public holiday in the calendar files for Germany.
Other system requirements:
• Java Runtime Environment (JRE) from version 1.4.1.
Usable file formats:
• CSV,
• from EXCEL 95 to EXCEL 2010,
• from ACCESS 97 or
• from SQL Server 7.0.