# The tests of significance were performed using a two-sided Student's two-sample t-test.
# Alternative hypothesis: Group 1 mean != Group 2 mean
# The nonparametric p-values were calculated using 999 Monte Carlo permutations.
# The nonparametric p-values contain the correct number of significant digits.
# Entries marked with "N/A" could not be calculated because at least one of the groups
# of distances was empty, both groups each contained only a single distance, or
# the test could not be performed (e.g. no variance in groups with the same mean).
Group 1	Group 2	t statistic	Parametric p-value	Parametric p-value (Bonferroni-corrected)	Nonparametric p-value	Nonparametric p-value (Bonferroni-corrected)
All within Meta_Grp	All between Meta_Grp	-15.4297881242	5.15051526717e-51	1.44214427481e-49	0.001	0.028
All within Meta_Grp	firm vs. firm	0.958118556268	0.338194217949	1	0.351	1.000
All within Meta_Grp	NA vs. NA	4.28737060198	1.97438727496e-05	0.000552828436988	0.001	0.028
All within Meta_Grp	bact vs. bact	-0.723216539571	0.469635831604	1	0.486	1.000
All within Meta_Grp	firm vs. NA	-6.00886489627	2.51354632698e-09	7.03792971555e-08	0.001	0.028
All within Meta_Grp	firm vs. bact	-14.4705160686	5.03303514964e-45	1.4092498419e-43	0.001	0.028
All within Meta_Grp	NA vs. bact	-7.10555775276	2.00790988989e-12	5.62214769169e-11	0.001	0.028
All between Meta_Grp	firm vs. firm	8.89121108461	2.02628229876e-18	5.67359043652e-17	0.001	0.028
All between Meta_Grp	NA vs. NA	6.67154424105	3.98444077196e-11	1.11564341615e-09	0.001	0.028
All between Meta_Grp	bact vs. bact	14.4627448821	4.00370974119e-45	1.12103872753e-43	0.001	0.028
All between Meta_Grp	firm vs. NA	0.173153932467	0.862559732239	1	0.858	1.000
All between Meta_Grp	firm vs. bact	-0.826897811816	0.408398870757	1	0.397	1.000
All between Meta_Grp	NA vs. bact	1.96556552621	0.0495596352094	1	0.057	1.000
firm vs. firm	NA vs. NA	3.10293853628	0.0022272249463	0.0623622984964	0.001	0.028
firm vs. firm	bact vs. bact	-1.380084472	0.167860105388	1	0.167	1.000
firm vs. firm	firm vs. NA	-4.95119146666	1.31715764898e-06	3.68804141714e-05	0.001	0.028
firm vs. firm	firm vs. bact	-8.50568852079	6.79215062291e-17	1.90180217441e-15	0.001	0.028
firm vs. firm	NA vs. bact	-5.74055683128	1.93577988795e-08	5.42018368626e-07	0.001	0.028
NA vs. NA	bact vs. bact	-4.74540271053	2.43221773646e-06	6.81020966207e-05	0.001	0.028
NA vs. NA	firm vs. NA	-8.116762317	1.07950841246e-12	3.02262355489e-11	0.001	0.028
NA vs. NA	firm vs. bact	-6.31279948804	4.52170287272e-10	1.26607680436e-08	0.001	0.028
NA vs. NA	NA vs. bact	-8.29489564642	1.12436550245e-14	3.14822340685e-13	0.001	0.028
bact vs. bact	firm vs. NA	-6.10810644655	1.46618340508e-09	4.10531353423e-08	0.001	0.028
bact vs. bact	firm vs. bact	-13.7071568219	1.37683302172e-40	3.85513246081e-39	0.001	0.028
bact vs. bact	NA vs. bact	-7.0743398953	2.71094490499e-12	7.59064573397e-11	0.001	0.028
firm vs. NA	firm vs. bact	-0.50836227137	0.611325144598	1	0.613	1.000
firm vs. NA	NA vs. bact	1.32909101413	0.184817859014	1	0.191	1.000
firm vs. bact	NA vs. bact	2.31373355817	0.0208831493574	0.584728182006	0.012	0.336
