RN
RS
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
Średnia RN=20.42 Średnia RS=21.07 Śrenia RN+RS=41.49
Original data from the World Data Center SILSO, Royal observatory of Belgium, Brussels