1.2.5-2 Labeling Curves

When multiple curves are included in a single graph, each curve should be identified directly by an adjacent label, rather than by a separate legend.

Additional Information:
As an exception, where displayed curves are too close for direct labeling, an acceptable alternative might be to distinguish the various curves in some way, perhaps by color coding or line coding, and identify their codes in a separate legend. Direct labeling will permit users to assimilate information more rapidly than displaying a separate legend.