Based on the resistivity data below collected via Wenner array, determine the geologic structure of the subsurface: (a) number of layers, (b) depth(s) of interface(s), (c) resistivities of the layers as accurate as possible. Electrode spacing, a (m) Apparent resistivity (Qm) 85 28 128 34 191 46 287 66 430 95 645 133 968 180 1452 232 2178 282 3268 320

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