origin	destination	population
34	35	23.512
34	36	23.512
34	37	23.512
34	38	23.512
34	39	23.512
34	40	23.512
35	34	26.63
35	36	26.001
35	37	20.948
35	38	20.948
35	39	20.948
35	40	20.948
36	34	26.63
36	35	26.001
36	37	26.001
36	38	20.948
36	39	20.948
36	40	20.948
37	34	26.63
37	35	20.948
37	36	26.001
37	38	26.001
37	39	20.948
37	40	20.948
38	34	26.63
38	35	20.948
38	36	20.948
38	37	26.001
38	39	26.001
38	40	20.948
39	34	26.63
39	35	20.948
39	36	20.948
39	37	20.948
39	38	26.001
39	40	26.001
40	34	26.63
40	35	20.948
40	36	20.948
40	37	20.948
40	38	20.948
40	39	26.001