The method checks if the area bounding box is completely inside the OSM grid. That means that its latitudes
        must be contained in the interval (-85.0511, 85.0511)

        :raises: ValueError

def _check_area_bbox(self):
        """The method checks if the area bounding box is completely inside the OSM grid. That means that its latitudes
        must be contained in the interval (-85.0511, 85.0511)

        :raises: ValueError
        """
        for coord in self.area_bbox:
            if abs(coord) > self.POP_WEB_MAX:
                raise ValueError('OsmTileSplitter only works for areas which have latitude in interval '
                                 '(-85.0511, 85.0511)')