service_id,monday,tuesday,wednesday,thursday,friday,saturday,sunday,start_date,end_date
cal1-mon-tue-wed-thu-fri,1,1,1,1,1,0,0,20260330,20261030
cal2-sat,0,0,0,0,0,1,0,20260404,20261031
cal3-sun,0,0,0,0,0,0,1,20260405,20261101