service_id,monday,tuesday,wednesday,thursday,friday,saturday,sunday,start_date,end_date
SA,0,0,0,0,0,1,0,20260101,20261231
SU,0,0,0,0,0,0,1,20260101,20261231
WD,1,1,1,1,1,0,0,20260101,20261231
WE,0,0,0,0,0,1,1,20260101,20261231
