line of equal or constant pressure on a graph, plot, or map
The bottom part of the diagram shows some contour lines with a straight line running through the location of the maximum value. The curve at the top represents the values along that straight line. A three-dimensional surface, whose contour graph is below. Enhypen
A two-dimensional contour graph of the three-dimensional surface in the above picture.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).