service_id,monday,tuesday,wednesday,thursday,friday,saturday,sunday,start_date,end_date
mtwtf,1,1,1,1,1,0,0,20150701,20160630
sat,0,0,0,0,0,1,0,20150701,20160630
sun,0,0,0,0,0,0,1,20150701,20160630
45xmtwtf,1,1,1,1,1,0,0,20150801,20160801