Have jagged contours on your surface? Here are a couple options to smooth them out. Find out which works best for you.
Surface Charts - ChartDirector Chart Gallery
Best way to generate smooth contour lines from point cloud data
labels Civil 3D Plus
How To: Smooth Contour Lines in ArcGIS Pro
Settings Civil 3D Plus
ConTesse: Accurate Occluding Contours for Subdivision Surfaces
Zone Modeling & Zone Draft, ThinkDesign Top 10 Features
displays the plots of the temperature distribution contour for the
How to generate Non-smooth/crude Contour Lines in QGIS? - Geographic Information Systems Stack Exchange
Surface, Civil 3D Plus
Smooth Surfaces from Scattered Data: ILNumerics SmoothSurface