   field       rxx       rxy
0   -9.0  1.321933 -0.538643
1   -8.9  1.317581 -0.534276
2   -8.8  1.310130 -0.528016
3   -8.7  1.302708 -0.522971
4   -8.6  1.296722 -0.516800
