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"midpoint_distance_m": 471.0, "start_elevation_m": 1102.2354238427838, "end_elevation_m": 1102.945122819983, "start_xy": [ 964836.3381343905, 6539587.453231615 ], "end_xy": [ 964836.6492663256, 6539589.428882626 ] }, "max_3m": { "gradient_pct": 36.27867962735157, "start_distance_m": 470.0, "end_distance_m": 473.0, "midpoint_distance_m": 471.5, "start_elevation_m": 1102.2354238427838, "end_elevation_m": 1103.3237842316043, "start_xy": [ 964836.3381343905, 6539587.453231615 ], "end_xy": [ 964836.8048322933, 6539590.416708132 ] } }, "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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