Visibility

Represents visibility conditions, the distance at which objects can be discerned.

JSON representation 
{
  "unit": enum (Unit),
  "distance": number
}
Fields
unit

enum (Unit)

The code that represents the unit used to measure the distance.
distance

number

The visibility distance in the specified unit.

Unit

Represents the unit used to measure the visibility distance.

Enums
UNIT_UNSPECIFIED The visibility unit is unspecified.
KILOMETERS The visibility is measured in kilometers.
MILES The visibility is measured in miles.