isis2ascii produces overlapping output in some cases
isis2ascii doesn't put space between the two adjacent output DN values in the case where we have negative output values in scientific notation, like so:
This makes it difficult to actually read the isis2ascii output into another program.
I suspect this problem was caused by my own earlier ticket, but we should be able to output values that this precision, but with the whitespace needed: https://isis.astrogeology.usgs.gov/fixit/issues/2098
I would be happy to provide test data if it would be useful.