"Table 3
OD Pair Numbers and Trip Segment Cities for the NW-SE Corridor",,,,,,
Trip segment,"Seoul to
 Daejeon",Seoul to Daegoo,Seoul to Busan,"Daejeon
to Daegoo",Daejeon to Busan,"Daegoo 
to Busan"
OD,OD 1,OD 2,OD 3,OD 4,OD 5,OD 6