Question: what is the rank for the rating 4.4?
SQL: SELECT "Rank (Night)" FROM "1-15681686-4" WHERE "Rating" = '4.4';

Question: what is the rating where the rank is 48?
SQL: SELECT "Rating/Share (18-49)" FROM "1-15681686-4" WHERE "Rank (Week)" = '48';

Question: what is the total rank where the rank is 58?
SQL: SELECT COUNT("Rank (Timeslot)") FROM "1-15681686-4" WHERE "Rank (Week)" = '58';

Question: what rank has viewers at 6.45?
SQL: SELECT "Rank (Week)" FROM "1-15681686-4" WHERE "Viewers (millions)" = '6.45';

Question: what is the total number of rank where viewers is 9.38?
SQL: SELECT COUNT("Rank (Timeslot)") FROM "1-15681686-4" WHERE "Viewers (millions)" = '9.38';