CREATE TABLE table_203_603 (id DECIMAL, "service" TEXT, "service id" TEXT, "bit rate" TEXT, "audio channels" TEXT, "description" TEXT, "analogue availability" TEXT)

what is the number of services broadcast with a mono lsf audio channel ?
SELECT COUNT("service") FROM table_203_603 WHERE "audio channels" = 'mono lsf'
SELECT COUNT("service") FROM "table_203_603" WHERE "audio channels" = 'mono lsf'