CREATE TABLE table_39992 ("Gill" TEXT, "Latitude" TEXT, "Longitude" TEXT, "Diameter  ( km ) " TEXT, "Diameter  ( mi ) " TEXT)

What is the Latitude when the Diameter (km) is 13km, and the Longitude is 72.9 e?
SELECT "Latitude" FROM table_39992 WHERE "Diameter (km)" = '13km' AND "Longitude" = '72.9° e'
SELECT "Latitude" FROM "table_39992" WHERE "Diameter (km)" = '13km' AND "Longitude" = '72.9° e'