Group1	Group2	Group1 mean	Group1 std	Group2 mean	Group2 std	t stat	p-value
firm	NA	225.089473684	37.6958310516	226.94	18.600064516	-0.101884342435	1.0
NA	bact	226.94	18.600064516	231.695238095	39.0571251495	-0.262862900148	1.0
firm	bact	225.089473684	37.6958310516	231.695238095	39.0571251495	-0.608139414894	1.0
