fix regression where timeseries screen reader tables weren't showing up

assets/src/scripts/components/hydrograph/index.js

@@ -320,12 +320,12 @@ const timeSeriesGraph = function (elem) {
 
     elem.append('div')
         .call(link(plotSROnlyTable, createStructuredSelector({
-            tsKey: () => 'compare',
+            tsKey: () => 'current',
             variable: currentVariableSelector,
             methods: methodsSelector,
-            visible: isVisibleSelector('compare'),
-            dataByTsID: pointsTableDataSelector('compare'),
-            timeSeries: currentVariableTimeSeriesSelector('compare')
+            visible: isVisibleSelector('current'),
+            dataByTsID: pointsTableDataSelector('current'),
+            timeSeries: currentVariableTimeSeriesSelector('current')
     })));
     elem.append('div')
         .call(link(plotSROnlyTable, createStructuredSelector({

assets/src/scripts/components/hydrograph/index.spec.js

@@ -146,12 +146,18 @@ describe('Hydrograph charting module', () => {
         });
 
         it('svg should be focusable', function() {
-           expect(svg.attr('tabindex')).toBe('0');
+            expect(svg.attr('tabindex')).toBe('0');
         });
 
         it('should have an accessibility table for each time series', function() {
-           expect(selectAll('table.usa-sr-only').size()).toBe(3);
+            expect(selectAll('table.usa-sr-only').size()).toBe(3);
         });
+
+        it('should have a div for each type of time series', function() {
+            expect(selectAll('div#sr-only-median').size()).toBe(1);
+            expect(selectAll('div#sr-only-compare').size()).toBe(1);
+            expect(selectAll('div#sr-only-current').size()).toBe(1);
+        })
     });
 
     describe('SVG contains the expected elements', () => {