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Fig. 7. Effective permittivity of the Ebro Basin soils before (EB1C and EB2C) and after (EB1NC and EB2NC) treatment with acid to remove the calcite. The solid symbols represent the estimated permittivity with 95% confidence estimates, EB1C {epsilon}s = 6.6; EB2C {epsilon}s = 6.3; EB1NC {epsilon}s = 5.7; EB2NC {epsilon}s = 5.8.