mescla.prep.qaqc.ec_from_ions¶ mescla.prep.qaqc.ec_from_ions(table)[source]¶ Estimate electrical conductivity (uS/cm) from the cation sum. Approximate by construction – see EC_PER_MEQ. Its value is as a consistency check against a measured EC, not as a substitute for one. Parameters: table (Any) Return type: ndarray