The plot below shows the average voltage over all frequencies versus time for the same data above. The interference fringes (peaks) from the Sun occur about 4.85 minutes (0.00337 days). This corresponds to a 1.213° movement of the Sun across the sky.
Note that nl=d sinq where d is the separation of the dishes.
This leads to a predicted separation of our dishes: d = l/sinq = (21cm)/(sin 1.213°) = 9.9 meters = 32 feet.
Michael Johnson's thesis reports that the distance between the SW and SE dishes is 63 meters. Note that the prediction above agrees with new dish-testing locations described below. The true dish-testing locations are not yet available.