service_id,monday,tuesday,wednesday,thursday,friday,saturday,sunday,start_date,end_date
cal1-mon-tue-wed-thu-fri,1,1,1,1,1,0,0,20260701,20260831
cal2-sat,0,0,0,0,0,1,0,20260704,20260829
cal3-wed-thu-fri,0,0,1,1,1,0,0,20260701,20260703
cal4-mon-tue-wed-thu-fri-sat,1,1,1,1,1,1,0,20260701,20260831