Reciprocity failure on rollei retro 100

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I just got a new TLR and I want to take some longer night exposures after getting some great result on delta 100.
I want to use rollei retro 100 as it is cheaper for me to experiment with.

I read the fact sheet for the delta 100 and used the graph for reciprocity failure to calculate exposure times, which worked very well.

Would this graph work the same for rollei retro or do they require different adjustment? Is there an equivalent fact sheet for rollei retro films?
 
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