service_id,monday,tuesday,wednesday,thursday,friday,saturday,sunday,start_date,end_date
W1,1,1,1,1,1,0,0,20251215,20260306
W2,1,1,1,1,1,0,0,20251215,20260306
W3,1,1,1,1,1,0,0,20260309,20260612