  });            
            return style_properties;
        }
    });
    geojson_layer.addTo(map);
    osm.addTo(map);
    
    d3.select('#week')
        .on('change', function(){ 
            isoweek = $('#week').val();
            
            style_properties = {
                fillColor: '#ffffff',
                weight: 1,
            };
            
            weekDim.filterAll();
            if(isoweek>0) {
                $("#data-table").removeClass('hidden');
                if ($('#select