1992-2000
On-screen bug used from years 1992-1994 (white).
On-screen bug used from years 1992-1994 (blue).
On-screen bug used from years 1992-1994 (blue with black border).
On-screen bug used from years 1994-1995.
On-screen bug used from years 1995-2000.
2000-2001
On-screen bug used from October 2000 of half of spring 2001.
2001-2003
On-screen bug used from half of spring 2001 until autumn 2001.
On-screen bug used from autumn 2001 until winter 2001/2002.
On-screen bug used from winter 2001/2002 until March 2002.
On-screen bug used from March 2002 until late June 2002.
On-screen bug used from late June 2002 until 6th March 2003.
2003-2007
On-screen bug used from March 2003 to autumn 2006 (also used in TVP3).
On-screen bug used autumn 2006.
On-screen bug used from 2006 to October 2007.
On-screen bug used form October 2007 to November 2007.
2007-2013
On-screen bug used from December 2007 to 31st of August 2013.
2013-2016
On-screen bug used from 1st of September 2013 to 1st of January 2016.
TVP3 Warszawa (second era)
On-screen bug used from 2nd of January 2016-present.