Add punctuation to the following sentence: The photograph here on the left side shows that the electrical current  power of the lightning discharge passed partly through the upper edge of the field following tractor tracks there both around the tramlines perpendicular to the edge even through the geometric pattern


The photograph here on the left side shows that the electrical current - power of the lightning discharge passed partly through the upper edge of the field, following tractor tracks there, both around the tramlines perpendicular to the edge, even through the geometric pattern.