service_id,monday,tuesday,wednesday,thursday,friday,saturday,sunday,start_date,end_date
sat,0,0,0,0,0,1,0,20150901,20170919
mtwtfs,1,1,1,1,1,1,0,20150901,20170919
mtwtf,1,1,1,1,1,0,0,20150901,20170919
