How do we interpret the ssGSEA scores in DepMap?

What do the scores for the ssGSEA mean? Is there a convention (negative vs positive score) and threshold for the ssGSEA scores? Does the score represent the degree to which a particular model represents a gene signature or pathway?

The best source for an explanation for how to interpret ssGSEA scores is likely to come from the documentation of the method itself: GitHub - GSEA-MSigDB/ssGSEA-gpmodule: A GenePattern module for running the ssGSEA method

Thanks,
Phil