service_id,monday,tuesday,wednesday,thursday,friday,saturday,sunday,start_date,end_date
cal1-mon-tue-wed-thu-fri,1,1,1,1,1,0,0,20260730,20260831
cal2-sat-1,0,0,0,0,0,1,0,20260801,20261226
cal3-mon-tue-thu-fri-8,1,1,0,1,1,0,0,20260901,20261218
cal4-wed-3,0,0,1,0,0,0,0,20260902,20261216
cal5-18,0,0,0,0,0,0,0,20261019,20261231