Long range air navigation chart, V70 (series). V70-4. Lat. 13° N-49° N., long. 110° W-180°. Scale 1″=70 naut. m. (1: 5.108,-200) at lat. 31° N., contour interval 1,000. 3,000, 5,000, 7,000, 10,000, 15.000 ft.