Slocan Lake

6 inches above water Laser Beam centroid from 10.4 miles observed from 6 inches above water - Globe model predicts lowest height above water the laser should be visible equals 60.6 ft above the water

4 ft above water Laser Beam centroid from 16.4 miles observed from 6 inches above water - Globe model predicts lowest height above water the laser should be visible equals 161 ft above the water