CREATE TABLE table_39995 ("Gill" TEXT, "Latitude" TEXT, "Longitude" TEXT, "Diameter  ( km ) " TEXT, "Diameter  ( mi ) " TEXT)

What shows for the Diameter (km) when the Diameter (mi) is 8mi, and a Gill is e?
SELECT "Diameter (km)" FROM table_39995 WHERE "Diameter (mi)" = '8mi' AND "Gill" = 'e'
SELECT "Diameter (km)" FROM "table_39995" WHERE "Diameter (mi)" = '8mi' AND "Gill" = 'e'