i have lot of data containing coordinates of Easting and Northing with elevation.they all a have fixed chainage and description (say a point in road center line and few points on both side of it as left side as RHS and right side as RHS and center as CL.now i and distance of each point from a fixed center line and in smaller distance to larger distance order.the LHS offset should be in negative sign.i am attaching one excel sheet for your help
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