Class	Ammonium < 0.04	Ammonium >= 0.04, <0.1	Ammonium >=0.1, <0.2	Ammonium >=0.2, <0.4	Ammonium >=0.4	Sites Ammonium	< 0.04	>= 0.04, <0.1	>=0.1, <0.2	>=0.2, <0.4	>=0.4	BOD <1.4	BOD >=1.4, <2	BOD >=2, <3	BOD >=3, <4	BOD >=4	Sites BOD	<1.4	>=1.4, <2	>=2, <3	>=3, <4	>=4
Dnieper (61)	0	0	4	44	13	61	0.0	0.0	6.56	72.13	21.31	1	17	39	3	1	61	1.64	27.87	63.93	4.92	1.64
Neman (39)	1	11	17	6	4	39	2.56	28.21	43.59	15.38	10.26	7	14	15	2	1	39	17.95	35.9	38.46	5.13	2.56
Pripyat (29)	0	0	4	20	5	29	0.0	0.0	13.79	68.97	17.24	0	8	18	1	2	29	0.0	27.59	62.07	3.45	6.9
Western Bug (17)	0	2	2	12	1	17	0.0	11.76	11.76	70.59	5.88	2	8	5	2	0	17	11.76	47.06	29.41	11.76	0.0
Western Dvina (19)	0	0	17	2	0	19	0.0	0.0	89.47	10.53	0.0	0	3	16	0	0	19	0.0	15.79	84.21	0.0	0.0