CREATE TABLE table_69146 ("City/Town" TEXT, "July av. T" TEXT, "Rain" TEXT, "Days with rain  ( year/summer ) " TEXT, "Days with frost" FLOAT, "Sunlight hours" FLOAT)

How many days with frost were there in the City/Town of Lugo have?
SELECT SUM("Days with frost") FROM table_69146 WHERE "City/Town" = 'lugo'
SELECT SUM("Days with frost") FROM "table_69146" WHERE "City/Town" = 'lugo'