Prime supports a separate placeholder for your units, Instead of:
You should:
Then it plots.
Further down you define ng as a unit (10^-9 g). You should 'label' that unit as a unit.
Labels are similar to the type tags you know from Mathcad, but not the same. Prime tries to label all your input automatically. While that often goes right, it sometimes goes completely wrong.
I have made the changes suggested I THINK. I am interested (need help) in first plot to work. If I can do that perhaps I can figure out the rest. Sorry I am slow, I started about a week ago
