Air navigation chart V30 (series). 48. Lat. 1° S-15° N, long. 77° W-102° W. Scale 1″=30 naut. m. (1:2,188,800) at lat. 7°30′, contour Interval 1,000, 2,000, 8,000, 5,000, 7,000, 9,000, 12,000 and 15,000 ft.