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Fig S2(a): [rho_xx(B=0) / Delta rho_xx]^{1/2} against temperature^{3/2}.

The stresses indicated below are sigma_xx.
Columns: temperature^{3/2} (K^{3/2}), [rho_xx(B=0) / Delta rho_xx]^{1/2}

Stress = -0.75 GPa
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8.0252,2.8803
8.0885,2.8679
8.1475,2.9206
8.2119,2.9332
8.2789,2.9067
8.3338,2.9646
8.3959,2.9453
8.4616,2.9405
8.5171,2.8848
8.5775,3.0052
8.6371,2.9309
8.6995,2.9506
8.7612,2.9326
8.827,2.9437
8.8874,3.0438
8.9467,2.9669
9.0043,2.9419
9.0693,2.9955
9.1377,2.9734
9.1987,3.0496
9.2628,2.992
9.3277,3.0133
9.3881,2.9772
9.4499,2.9866
9.511,3.013
9.5779,3.0541
9.6469,3.0065
9.7072,3.0699
9.7679,3.0693
9.835,3.1342
9.8974,3.0945
9.9677,3.0905
10.032,3.123
10.098,3.0675
10.156,3.1166
10.223,3.0501
10.283,3.1164
10.352,3.0963
10.42,3.1733
10.487,3.1429
10.554,3.1026
10.619,3.1856
10.681,3.1766
10.751,3.1819
10.806,3.1173
10.881,3.1936
10.941,3.1719
11.007,3.2131
11.08,3.2051