I have previously calculated the catchment areas for a series of archaeological sites. After making some minor adjustments to site locations, I now have to repeat the same calculations. The results should be very similar, but they are quite different. I'm using the same table summarizing the Tobler function in the way it is explained elsewhere (e.g. http://mapaspects.org/node/3744/) I'm pretty sure I've been doing the same thing I did last time, only then I used ArcMap 10.2.2 and now am using 10.5.1.
Iv'e tryed different rasters, different versions of Tobler's table, different coordinate systems, adding a slope raster as an additional variable, you name it! If it could be tryed, it was. nothing helped, I never get the same result as before.
