Fig. 1: Successful contrail avoidance as seen on the PACE panel.
From: Feasibility test of per-flight contrail avoidance in commercial aviation
The PACE panel shows the vertical profile (purple) of a late ascent contrail avoidance maneuver. A contrail likely zone (CLZ) is shown in gray, just above the left side of the flight path. The pilot originally planned to fly at FL360 (36,000 feet), the level of the gray line. By staying at FL320 (32,000 feet) for part of the flight, the CLZ was avoided and no detectable contrails were created.
