Legend (Reference/BLM_OR_Quad_Boundaries)

Quarter Quads (1:12K) (0) 7.5 Minute Quads (1:24K) (1) 15 Minute Quads (1:62,500) (2) 30 Minute Quads (1:63,360) (3) 1:100K Quads (4) 60 Minute Quads (5) 1:250K Quads (6)