service_id,monday,tuesday,wednesday,thursday,friday,saturday,sunday,start_date,end_date
cal1-mon-tue-wed-thu-fri-sat-sun,1,1,1,1,1,1,1,20260421,20260503
cal2-mon-tue-wed-thu-fri,1,1,1,1,1,0,0,20260421,20260501
cal3-sat-sun,0,0,0,0,0,1,1,20260425,20260503