## Figure 3

Excel | CSV | Graphic Version

### (a) Number of Significant Eigenflows, in Terms of the Cumulative Density Function (CDF) of the Number of Entries in Each Row of the Principal Matrix That Exceed the Threshold

Number of significant eigenflows (a) CDF of traffic flows
1 0.007142857
1 0.014285714
1 0.021428571
1 0.028571429
1 0.035714286
1 0.042857143
1 0.05
2 0.057142857
4 0.064285714
5 0.071428571
5 0.078571429
5 0.085714286
6 0.092857143
6 0.1
6 0.107142857
6 0.114285714
6 0.121428571
7 0.128571429
7 0.135714286
8 0.142857143
9 0.15
9 0.157142857
9 0.164285714
10 0.171428571
12 0.178571429
12 0.185714286
13 0.192857143
13 0.2
13 0.207142857
13 0.214285714
13 0.221428571
13 0.228571429
13 0.235714286
14 0.242857143
14 0.25
14 0.257142857
14 0.264285714
15 0.271428571
15 0.278571429
16 0.285714286
16 0.292857143
17 0.3
18 0.307142857
19 0.314285714
22 0.321428571
22 0.328571429
23 0.335714286
23 0.342857143
23 0.35
23 0.357142857
23 0.364285714
24 0.371428571
24 0.378571429
26 0.385714286
26 0.392857143
27 0.4
27 0.407142857
27 0.414285714
27 0.421428571
28 0.428571429
28 0.435714286
28 0.442857143
28 0.45
28 0.457142857
28 0.464285714
28 0.471428571
28 0.478571429
29 0.485714286
29 0.492857143
29 0.5
29 0.507142857
29 0.514285714
29 0.521428571
30 0.528571429
30 0.535714286
30 0.542857143
30 0.55
30 0.557142857
30 0.564285714
30 0.571428571
30 0.578571429
30 0.585714286
31 0.592857143
31 0.6
31 0.607142857
32 0.614285714
32 0.621428571
32 0.628571429
32 0.635714286
33 0.642857143
33 0.65
34 0.657142857
34 0.664285714
34 0.671428571
34 0.678571429
34 0.685714286
34 0.692857143
34 0.7
34 0.707142857
35 0.714285714
35 0.721428571
35 0.728571429
35 0.735714286
35 0.742857143
35 0.75
35 0.757142857
35 0.764285714
35 0.771428571
36 0.778571429
36 0.785714286
36 0.792857143
36 0.8
36 0.807142857
36 0.814285714
36 0.821428571
36 0.828571429
36 0.835714286
37 0.842857143
37 0.85
37 0.857142857
37 0.864285714
37 0.871428571
37 0.878571429
37 0.885714286
37 0.892857143
37 0.9
38 0.907142857
38 0.914285714
38 0.921428571
39 0.928571429
39 0.935714286
40 0.942857143
40 0.95
41 0.957142857
41 0.964285714
41 0.971428571
42 0.978571429
42 0.985714286
43 0.992857143
44 1

### (b) Histogram of Significant Eigenflows

Class intervals of significant eigenflows (b) Frequency
5 29
10 26
15 25
20 15
25 12
30 12
35 9
40 7
45 5