Long range air navigation chart, V70 (series). 16. Lat. 2° S-34° N, long. 98° E. Scale 1″=70 naut. m. (1:5,107,200) at lat. 16° N, contour interval 1,000, 3,000, 5,000, 7,000, 10,000, 15,000, 20,000 and 25,000 [ft.].