20deg	15 deg	10 deg	5  deg	0 deg	5 deg	10 deg	15 deg	20deg	25 deg
Parabolic dish
30 degree compound
45 degree compound
60 degree compound
Hemisphere dish

Here is the data for a tight area. 1hour 20 minutes before directly over the dish until 1 hour 40 minutes after it was directly shining on it.  I  have the sun going
 across the dishes.  I do not think the parabolic dish performs as well as the others. Do you?