service_id,monday,tuesday,wednesday,thursday,friday,saturday,sunday,start_date,end_date
mtwtf,1,1,1,1,1,0,0,20130826,20151231
mtwtfs,1,1,1,1,1,1,0,20130826,20151231
s,0,0,0,0,0,1,0,20130826,20151231
