Group

I

II

III

IV

Station

St. D2, St. U1

St. L, St. U3

St. D1, St. R, St. M, St. U2

St. U4

δ¹³C variation

−27.15 - −26.8

−26.34 - −25.70

−25.50 - −24.24

−27.76

δ¹⁵N variation

4.31 - 5.01

3.00 - 3.53

3.79 - 4.39

1.7