service_id,monday,tuesday,wednesday,thursday,friday,saturday,sunday,start_date,end_date
cal1-mon-tue-thu-fri-21,1,1,0,1,1,0,0,20260105,20260703
cal2-sat-1,0,0,0,0,0,1,0,20260103,20260829
cal3-21,0,0,0,0,0,0,0,20260102,20260515
cal4-wed-4,0,0,1,0,0,0,0,20260107,20260701
cal5-mon-tue-wed-thu-fri,1,1,1,1,1,0,0,20260706,20260831