Table 1.

Diffusion Coefficients^a

Measured Diffusion Coefficients (m2/s)
	peak at 2.3 ppm				peak at 3.3 ppm				peak at 4.7 ppm
	fast		slow		fast		slow		fast		slow
	D	%	D	%	D	%	D	%	D	%	D	%
fresh biofilm	1.3E–10	43	9.0E–13	57	1.4E–10	35	3.0E–13	65	1.3E–09	100	NA	0
aged 3.5 d	2.4E–10	81	5.0E–13	19	3.1E–10	72	6.0E–13	28	1.2E–09	100	NA	0
aged 5.5 d	3.5E–10	91	2.0E–12	9	4.4E–10	87	9.0E–13	13	1.4E–09	100	NA	0
boiled biofilm	4.4E–10	95	2.0E–11	5	5.3E–10	100	NA	0	1.4E–09	100	NA	0

^aThis table gives the numerical data for Figures 4 and 5. The percentage of fast diffusing molecules and the magnitude of the diffusion coefficients both increase as the biofilm decomposes.