Having played with the Nasa 90m dem that gives Googles laughable elevation data, and tried out a few comparisons where I know rwgps' data is duff compared to Strava's crowd sourced barometric data (south loch tay road} I've just realized I've never thought to put a route using it through the tool to see what it's data makes of it.
I'm curious as to the nature of the os data, is it automated contour counting, a 3d model of the osgb grid or something else?
I can quite comfortably get AAA qualifying routes in "flat" Fife, rarely above 100 and mostly high single digit to mid-teen gradients.
Any imbalance from a consistent quality model would suggest previous methods were imbalanced.
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