Errors in RIN calculation due to signals in 5S region

I have Run 2 Samples (pkst1 and pkst2) of Total RNA extracted from bacteria. It should have small RNAs along with mRNAs. The samples were quantified with QUbit4.0 and have 28ng/ul. The Total Nano-prokaryote kit was used for quantification. Result showed that there is "unexpected signals in 5S region". No "RIN" value was estimated though rRNA-Ratio was 0.4 and 0.5. 

I have Ran the baseline correction and Ladder result was good.

Pls suggest how to resolve the results and get RIN values?



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