alpar@1: plant,market,distance
alpar@1: "Seattle","New York",2.5
alpar@1: "Seattle","Chicago",1.7
alpar@1: "Seattle","Topeka",1.8
alpar@1: "San Diego","New York",2.5
alpar@1: "San Diego","Chicago",1.8
alpar@1: "San Diego","Topeka",1.4