Which Pavilion depth has a Crown angle of 34.0–34.7°?
CREATE TABLE "proportions" (
  "benchmark" text,
  "crown_height" text,
  "pavilion_depth" text,
  "table_diameter" text,
  "girdle_thickness" text,
  "crown_angle" text,
  "pavilion_angle" text,
  "brilliance_grade" text
);
SELECT "pavilion_depth" FROM "proportions" WHERE "crown_angle"='34.0–34.7°';