8. The following is a Bouguer anomaly measured over 13 stations along a straight line with 50m station spacing. If the anomaly is two- dimensional, calculate depth to the structure causing it and its width, taking the average density contrast with the surrounding rocks is 0.2gm/cm. The anomaly: St mgal 0.1 1 2 3 4 0.2 0.5 5 1.1 1.9 6 7 8 3.0 4.0 4.1 10 9 3.1 1.8 6.1 11 12 13 1.0 0.4 0.1 9. If the anomaly in (8) above is three-dimensional, calculate the depth