[width=3in,keepaspectratio]figure_fenceplot
Fence plots combine several 2D plots by aligning their Y coordinates and
separating them from each other by a displacement along X. Filling the area
between a base value and each plot's series of Z values enhances the visual
impact of the alignment on Y and comparison on Z. There are several ways
such plots can be created in gnuplot. The simplest is to use the 5 column
variant of the 
