latitude
Description:
The latitude of a particular location of which videos should be found.
 This should be used in conjunction with longitude; if either
      property is outside the valid range, neither will be used. Valid latitudes are between -90 and 900 degrees; any values
      of this property outside that range will unset the property in the query URI.
If location_radius is a non-0 value, this will
      define a circle from which videos should be found.
For more information, see the online documentation .