service_id,monday,tuesday,wednesday,thursday,friday,saturday,sunday,start_date,end_date
SN01272009,0,0,0,0,0,1,1,20090302,20190302
ST01272009,0,0,0,0,0,1,0,20090302,20190302
WD01272009,1,1,1,1,1,0,0,20090302,20190302
SN,0,0,0,0,0,1,1,20090101,20090301
ST,0,0,0,0,0,1,0,20090101,20090301
WD,1,1,1,1,1,0,0,20090101,20090301