My apologies, but I do not have this code. It was something I wrote while working in that plasma laboratory class. This is analysis, however, not a simulation code. This means that the code is really a representation of the equations shown here. The PlasmaPy version is probably pretty good, so you may want to double check your input. It’s pretty easy to corrupt a data set, e.g., maybe it was read incorrectly or formatted differently from whatever PlasmaPy expects. Best of luck to you, I hope you figure out the problem!