Cirrostratus covering part of sky Cirrostratus with sun visible Cirrostratus covering sky with sun on horizon Cirrostratus, more dense toward horizon Cirrostratus with no variations Cirrostratus in patches Cirrostratus of varying thickness Cirrostratus with no variations Cirrostratus with few variations Cirrostratus, dense over all of sky Cirrostratus, sun dimly visible Cirrostratus, dense toward horizon