Varieties
(Section 2.3.5.3)Altostratus translucidus (As tr) - CEN 1926
(Section 2.3.5.3.1)Altostratus, the greater part of which is sufficiently translucent to reveal the position of the Sun or Moon.
Altostratus, the greater part of which is sufficiently translucent to reveal the position of the Sun or Moon.