Requesting meaning of parabolic dish specs

Hi, Requesting Interpretation or meaning of the following offset parabolic dish specs :

Dish.1 - (Elevation 25-77 / 17-90°) and (Azimuth 0°~360°)

Dish.2 - (Azimuth alignment 0° ~ 360°) and (Elevation alignment 0° ~ 90°).

Their azimuth and elevation in terms of 3dbi and 6dbi .

Any help will be mostly appreciated.