Editing in Station Offset Reports

Hi all,

I have a corridor of 4 Lane divided carriageway and  I need to create a lane slopes report @ 10m interval. I ran the station base report . The camber/Lane slope in reports is calculating from centerline "CL" to carriageway edge "EOP" which is -2.3% but I want the camber/Lane  slope values from median edge "ME_Lhs" to carriageway edge  "EOP" which is -2.5%.

how can i edit station base report for my requirements ? 

Any help is highly appreciated!