service_id,monday,tuesday,wednesday,thursday,friday,saturday,sunday,start_date,end_date
cal1-sat-sun-16,0,0,0,0,0,1,1,20251025,20261231
cal2-mon-tue-wed-thu-fri-15,1,1,1,1,1,0,0,20251027,20261230
cal3-sat-sun-15,0,0,0,0,0,1,1,20251025,20261231
cal4-wed,0,0,1,0,0,0,0,20251231,20251231