Energy ER (×1019 eV)

0.5

1

3

4

6

8

10

20

LIV coefficient absolute value

Proton (×10-30)

36.2

18.1

6.0

4.5

3.0

2.3

1.8

0.9

56Fe (×10-28)

20.3

10.1

3.4

2.5

1.7

1.3

1.0

0.5