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Fig. 3
Echelle diagrams for 16 Cygni A (left panel) and 16 Cygni B (right panel). The observed frequencies are represented by crosses. The frequencies computed for the models with Y = 0.26 and Z = 0.024 are represented by blue dots (l = 0), green triangles (l = 1), red squares (l = 2), and black diamonds (l = 3).
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