What we can see is a pretty narrow Doldrums crossing point - visible because of the northwards bulge of the isochrone around the Predicted Route.    From Wordnik.com.  [Sail-World.com USA Latest News] Reference

I've set the isochrone (the red line running west-to-east) to the afternoon of the 27th, towards the end of the transition zone into the westerly breeze.    From Wordnik.com.  [Sail-World.com USA Latest News] Reference

isochrone Maps in Google Maps - Google Maps Mania links to resources on how to create an isochrone map - i.e., a map that shows travel time from a given point by drawing lines like topographic contours - within the Google Maps environment.    From Wordnik.com.  [Megite Technology News: What's Happening Right Now] Reference

Our proposal also includes observations of six well-studied globular and open star clusters; these observations will serve to calibrate our photometric indices, provide empirical population templates, and transform the theoretical isochrone libraries into the WFC3 filter system.    From Wordnik.com.  [SpaceRef Top Stories] Reference