How to interperet audio magnetotelluric results?

Question

I'm newbie in filed of Geophysics science. I will be grateful if you could help me to understand this chart

1. what does line 12 or Line 11 mean? what about line15-14?
2. How to identify the depths?
3. what does other numbers mean in the chart (such as 40 or 13 on the chart)
4. This diagram shows me the resistivity on the surface of earth of resistivity to depth of the earth?

Answer 1

1. These are acquisition lines id: each line provided a profile, the profiles are then joined to provide the current chart.
2. you cannot, they have already been filtered, the depth are defined.
3. 40 and 13 along the lines is the resistivity values along that isoline
4. It tells you the resistivity for the depth between 200 and 300 meters, as obtained via inversion of the collected measurments.