CREATE TABLE table_46706 ("Name" CLOB, "Latitude" CLOB, "Longitude" CLOB, "Diameter  ( km ) " FLOAT, "Year named" FLOAT, "Name origin" CLOB)

What is the highest diameter when the latitude is 43.5s?
SELECT MAX("Diameter (km)") FROM table_46706 WHERE "Latitude" = '43.5s'
SELECT MAX("Diameter (km)") FROM "table_46706" WHERE "Latitude" = '43.5s'