Definitions
The number of spots available globally, including reserved spaces, such as those for disabled people, long term parkers and so on. This might be harder to estimate at those parking locations on which spots borders are not clearly marked by lines
The number of spots available (_including_ all vehicle types or reserved spaces, such as those for disabled people, long term parkers and so on). This might be harder to estimate at those parking locations on which spots borders are not clearly marked by lines. Allowed values: A positive integer number, including 0. It must lower or equal than `totalSpotNumber`.
The number of spots available in this group. It must lower or equal than `totalSpotNumber`.