Phase ID error: IndexError: index 3 is out of bounds for axis 0 with size 3

[Grubes2023]

Howdy,

I am trying to use your phase_id model; however, I am getting an error each time. I have examined the the example sandria file but see no real differences between mine and the example. I am not a coding expert, so I cannot personally troubleshoot beyond the obvious.

Any help is greatly appreciated

PhaseFormat_for_help.csv