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"midpoint_distance_m": 475.5, "start_elevation_m": 809.9440698149893, "end_elevation_m": 810.7037890063775, "start_xy": [ 719577.8702323061, 6295687.556303118 ], "end_xy": [ 719578.4962354178, 6295690.470723608 ] } }, "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). 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