service_id, monday, tuesday, wednesday, thursday, friday, saturday, sunday, start_date, end_date
S1, 1, 1, 1, 1, 1, 0, 0, 20080604, 20120604
S2, 0, 0, 0, 0, 0, 1, 0, 20080604, 20120604
S3, 0, 0, 0, 0, 0, 0, 1, 20080604, 20120604
