In the parallel market, the value of the Naira increased from N1,515 to N1,512 per dollar on Tuesday to N1,512 yesterday.  

But on the Nigerian Foreign Exchange Market (NFEM), the value of the Naira dropped to N1,505 per dollar.  

According to data released by the Central Bank of Nigeria (CBN), the naira depreciated by N3 on Tuesday, as the indicative exchange rate increased to N1,505 per dollar from N1,502 per dollar on Tuesday.  

As a result, the difference between the NFEM rate and the parallel market dropped from N13 to N7 per dollar on Tuesday.

Source