Reciprocity factors for Fuji Neopan

Does anyone know the reciprocity factors for Fuji Neopan 400? The datasheets I have in both Japanese and English do not refer to this. I was trying some close up shots last night, which required unadjusted exposure times of 30 seconds, and I adjusted these by substituting the reciprocity factors for Ilford Delta 400 ; obviously these were totally wrong as I have ended up with incredibly high contrast.

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