"case"	"observed"
"all_rows_have_zero"	"error: every gene contains at least one zero, cannot compute log geometric means"
"all_NA"	"NA,NA,NA"
"mixed_NA"	"0.5,1.0,2.0"
"all_zero"	"error: every gene contains at least one zero, cannot compute log geometric means"
"empty_rows"	"error: every gene contains at least one zero, cannot compute log geometric means"
"negative"	"0.5,1.0,2.0"
"positive_infinity"	"0.5,1.0,2.0"
"empty_controls"	"NA,NA,NA"
"external_geoMeans"	"0.71618541928065504,0.83554965582743057,1.67109931165486225"
"poscounts"	"1.0088121579077090,1.7383368715614920,2.1747171565477195"