"Dragonite habitat found after analysis of 6 million spawns"

#PokemonGO: I've been scanning my city for over a month and have collected 6 million spawns. With the source code for Brusselopole.be released I finally have a good way to anaylze my data. It's great for finding nests, but also for finding habitats.Ok tl;dr mode:Here's a heatmap of where Dragonite have spawned in my area:http://ift.tt/2c65kNt. It matches clefairy exactly.http://ift.tt/2bY2TQ3'm not scanning every spot on this map, so you need a point of reference. Here's jiggly puff, who while a little more rare than Clefairy (1:2) spawns pretty evenly over my scan area:http://ift.tt/2c64O1Y the Jigglypuff map you can see where Dragonite spawn and where they don't. A clear habitat. But is it a biome? What do all of these Dragonite areas have in common?Elevation: http://ift.tt/2bY3cuh've circled in blue the areas that are part of the Dragonite habitat. They are all at increased elevation. In red you can see areas that I do not scan, so do not show on the dragonite heatmap despite being higher elevation (you can reference the jigglypuff heatmap to see exactly what areas are not scanned)So, a clear biome: Hills (or Mountain?) and two species that spawn more frequently there: Clefairy, Dragonite.This is all I've uncovered so far, but if anyone has ideas I'd be glad to look at my heatmaps.Props to /u/nithou for his amazing site that made this possibleEDIT:I checked thesilphroad.com database and I believe I've confirmed this is true all across the US:I'm going to compare to snorlax, because people care about logging snorlaxes, and because I've noticed snorlax tends to spawn everywhere:http://ift.tt/2c65WTj look at Dragonite: http://ift.tt/2bY44Pw around Florida and the gulf coast, Dragonite is almost non existant. Also sparse in the midwest, via /r/TheSilphRoad http://ift.tt/2c8PXVd