appendix E4

Table E.4

Summary of sampling frequencies and windows specified in international agreements

Sampling frequency per year (unless indicated)	Sampling window	1	35	81	109	113	114	125	126	127
2 weeks to every 3 years	Variable - Intensive between October and March	-	X	-	-	-	-	-	-	-
1	All year	-	-	-	X	-	-	-	-	-
1	August-September	X	-	-	-	-	-	-	-	-
1	Late winter-early spring	X	-	-	-	-	-	-	-	-
1	None	X	-	-	-	-	-	-	-	-
1	Seasonal	-	-	-	-	-	-	-	X	-
1	All year								X
1	Research needed	X	-	-	-	-	-	-	-	-
1	Summer	X	-	-	-	-	-	-	-	-
1-6	Winter sampling	-	-	-	-	-	-	-	X	-
12	All year	-	-	-	X	X	X	-	-	-
12	Preferably in the morning	X	-	-	-	-	-	-	-	-
12	Summer (throughout the productive season)	X	-	-	-	-	-	-	-	-
2	All year	-	-	-	X	-	X	-	-	-
4	All year	-	-	-	-	-	X	-	-	-
6	Four seasons	X	-	-	-	-	-	-	-	-
6	Late summer-autumn	X	-	-	-	-	-	-	-	-
6	Winter	X	-	-	-	-	-	-	-	-
6-12	All year	-	-	-	-	-	X	X	-	-
Continuously	All year	-	-	-	-	-	X	-	-	-
Continuously	At the end of the first phase	-	-	-	-	-	X	-	-	-
continuously	Since the implementation	-	-	-	-	-	X	-	-	-
Every 2 years	Not specified	-	-	X	-	-	-	-	-	-
Every 7-10 days	All year	-	-	-	-	-	X	-	-	-
Not specified	All year	-	-	-	-	-	-	-	-	X
Not specified	Not specified	X	-	-	-	-	-	-	-	-

Notes:

1 Baltic Sea (Helsinki) 1974/92

35 Mura 1954

81 North East Atlantic (OSPAR) 1992

109 Water Economy (Au/Hu) 1956

113 Danube (Bucharest) 1985

114 Technical Co-operation (Bu/Gr) 1991

125 Frontier waters (Au/Sl) 1970

126 North Sea (NSTF) 1987

127 Rhine (hydrology) 1989