: ''
                const color = w.globals.colors[opts.seriesIndex]
            
                return (
                  '<div class="apexcharts-tooltip-rangebar">' +
                  '<div> <span class="series-name" style="color: ' +
                  color +
                  '">' +
                  (seriesName ? seriesName : '') +
                  '</span></div>' +
                  '<div> <span class="category">' +
                  ylabel +
                  ' </span> <span class="value start-v