RE:RTAGarland, as a followup to the prior post, is there any way to do a calculated vertical gradient on the IP profile data and then re-contouring the data? If it could be done, then I think it would bring out the weaker chargeability responses that perhaps we don't see now, It would also define the responses along the RTA much clearer, thus rendering a better picture of what the conductors are like on the ground. I'm thinking that the present contour scale is too coarse. This would be for a plan map only. Comments??