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The graph shows 3 curves for water, dry soil, and wet soil. The horizontal axis shows incidence angle theta sub I in degrees, ranges from 0 to 90 in increments of 10. The vertical axis shows the magnitudes of the absolute value of upper gamma sub-parallel and the absolute value of upper gamma sub-perpendicular, ranges from 0 to 1 in increments of 0.2. The curve for dry soil originates from (90, 1) and then descends to the incidence angle (60, 0). The curve then rises to the epsilon sub r equals 3 at (0, 0.25). The curve then again rises in dashed lines up to the starting point.

The curve for wet soil originates from (90, 1) and then descends to the incidence angle (78, 0). The curve then rises to the epsilon sub r equals 25 at (0, 0.65). The curve then again rises in dashed lines up to the starting point.

The curve for water originates from (90, 1) and then descends to the incidence angle (83, 0). The curve then rises to the epsilon sub r equals 81 at (0, 0.8). The curve then again rises in dashed lines up to the starting point.

The dashed lines are labeled, the absolute value of the upper gamma sub perpendicular. The solid lines are labeled, the absolute value of the upper gamma sub parallel.