Labor Costs- STOJOUVAL table

SUGGESTED

I have configured labor costs as 17 hours by 30.56 = $519.52 however have seen on a few production tracking processes that there is an extra line for $112.66.   I cannot figure out where this extra labor cost value is coming from.  the below is from the STOJOUVAL table.  We are currently having issues with posting shipments as we are using the dvlabcst field to segregate the labor costs on the shipment posting.  I just would like to understand why the system is calculating more labor costs.

I"m hoping someone can help me out with this as cannot get answers from anyone. 

thanks!

Christine