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Show all ticks of a windrose chart

Hello there!

I am trying to build a windrose chart in Python using
In the tutorial ( they define following data:
t=['North', 'N-E', 'East', 'S-E', 'South', 'S-W', 'West', 'N-W']
but the diagram does only show ticks for:
['North', 'East', 'South', 'West']

How do I show the other ticks as well? [‘N-E’, ‘S-E’, ‘S-W’, ‘N-W’]
Unfortunately, Google and the documentation ( do not answer this question.