service_id,monday,tuesday,wednesday,thursday,friday,saturday,sunday,start_date,end_date
mtwtf,1,1,1,1,1,0,0,20150101,20171231
mtwtfs,1,1,1,1,1,1,0,20150101,20171231
ss,0,0,0,0,0,1,1,20150101,20171231
sat,0,0,0,0,0,1,0,20150101,20171231
sun,0,0,0,0,0,0,1,20150101,20171231
