service_id,monday,tuesday,wednesday,thursday,friday,saturday,sunday,start_date,end_date
mtwtfs,1,1,1,1,1,1,0,20171224,20210826
sat,0,0,0,0,0,1,0,20171224,20190228
mtwtf,1,1,1,1,1,0,0,20181224,20210228
