1              // Number of NON-AIR layers
20             // resistivity of bottom layer [Ohm-m]

// 21 layer model
// thick
// 11, 5, 5, 4, 3.5, 4.5, 4.5, 5.5, 3, 6, 15, 3, 6, 3, 8, 9, 10,
//        7, 8, 11;
// rho 
//  1, 16., 60, 25, 55, 20, 45, 5, 40, 20, 40, 20, 120, 40, 20, 45, 36, 30,
//        48, 55, 40, 25;