Countries	Less than 1.4 mg O2/l (%)	1.4-2.0 mg O2/l (%)	2.0-3.0 mg O2/l (%)	3.0-4.0 mg O2/l (%)	Greater than 4.0 mg O2/l (%)
United Kingdom (529)	51.98	31.76	12.29	1.13	2.84
Spain (2190)	1.69	6.26	50.91	8.86	32.28
Slovenia (19)	100.0	0.0	0.0	0.0	0.0
Slovakia (16)	6.25	37.5	50.0	6.25	0.0
Serbia (36)	8.33	36.11	38.89	11.11	5.56
Romania (121)	9.09	24.79	20.66	21.49	23.97
Portugal (95)	21.05	46.32	15.79	6.32	10.53
Poland (2937)	6.88	22.51	34.83	19.75	16.04
North Macedonia (19)	0.0	10.53	36.84	10.53	42.11
Lithuania (329)	12.46	39.51	37.08	8.51	2.43
Latvia (23)	69.57	30.43	0.0	0.0	0.0
Kosovo* (47)	12.77	6.38	6.38	0.0	74.47
Italy (2189)	45.82	19.64	18.46	6.03	10.05
Ireland (182)	91.21	8.24	0.0	0.55	0.0
Germany (158)	31.01	24.68	31.01	8.86	4.43
Finland (10)	60.0	30.0	0.0	10.0	0.0
Estonia (107)	38.32	47.66	14.02	0.0	0.0
Czechia (863)	10.08	23.64	31.75	16.8	17.73
Cyprus (24)	87.5	4.17	0.0	0.0	8.33
Croatia (48)	62.5	12.5	12.5	4.17	8.33
Bulgaria (104)	25.96	21.15	32.69	12.5	7.69
Belgium (97)	30.93	22.68	29.9	5.15	11.34
Austria (77)	32.47	37.66	29.87	0.0	0.0
Albania (26)	0.0	0.0	0.0	0.0	100.0