Table 2. Soil pH, temperature (K), time (year, since soil field-contamination with Cu salts), soil organic carbon content (w/w%), total Cu (mg kg^-1), measured E values (E_m, fraction).

No.	Location	Coordinates	Soil pH	Temperature	Time	SOC	Total Cu	Em
1	Hygum1	55°46’30”N, 9°25’43”E	5.43	288.0	78	2.58	41.1	0.36
2	Hygum2	55°46’30”N, 9°25’43”E	5.53	288.0	78	2.58	75.3	0.40
3	Hygum3	55°46’30”N, 9°25’43”E	5.63	288.0	78	2.58	201.1	0.47
4	Hygum4	55°46’30”N, 9°25’43”E	5.49	288.0	78	2.58	298.2	0.54
5	Hygum5	55°46’30”N, 9°25’43”E	5.62	288.0	78	2.58	304.5	0.54
6	Hygum6	55°46’30”N, 9°25’43”E	5.48	288.0	78	2.58	337.1	0.50
7	Hygum7	55°46’30”N, 9°25’43”E	5.42	288.0	78	2.58	406.4	0.55
8	Hygum8	55°46’30”N, 9°25’43”E	5.19	288.0	78	2.58	463.6	0.57
9	Woburn1	51°59’17”N, 0°35’30”W	6.36	282.5	8	1.5	45.6	0.59
10	Woburn2	51°59’17”N, 0°35’30”W	6.36	282.5	8	1.5	89.8	0.56
11	Woburn3	51°59’17”N, 0°35’30”W	6.36	282.5	8	1.5	115.6	0.60
12	WagningenA1	51°57’49”N, 5°39’54”E	3.86	282.5	22	1.5	27.5	0.38
13	WagningenA2	51°57’49”N, 5°39’54”E	3.87	282.5	22	1.5	45.4	0.47
14	WagningenA3	51°57’49”N, 5°39’54”E	3.98	282.5	22	1.5	44.9	0.46
15	WagningenD1	51°57’49”N, 5°39’54”E	5.43	282.5	22	1.5	46.0	0.56
16	WagningenD2	51°57’49”N, 5°39’54”E	5.14	282.5	22	1.5	55.5	0.60
17	WagningenD3	51°57’49”N, 5°39’54”E	5.48	282.5	22	1.5	71.2	0.53
18	Italy1	44°41’55”N, 10°37’48”E	7.14	288.5	40	3.1	60.2	0.29
19	Italy2	44°41’55”N, 10°37’48”E	7.14	288.5	40	3.1	121.8	0.31
20	Hungary1	46°54’25” N, 18°31’22” E	7.30	283.5	13	2.7	40.5	0.28