 
   refresh: ->
     @rawChartData = @dataForChart()
-
-    @svg.select('g.y_axis text.unit')
-      .text(@main_formatter()(1).split(' ')[1])
 
   drawLegend: (series, columns = 2) ->
     height = ((series.length + 1) / columns) * 15

      .orient('left')
      .ticks(7)
      .tickSize(-@width, 0)
      .tickFormat((v) => formatter(v).split(' ')[0])

  createTimeScale: (domain) ->
    d3.time.scale.utc().range([0, @width]).domain(domain)

    scale = @createLinearScale()
    axis  = @createLinearAxis(scale)

    @svg.append('g').attr('class', 'y_axis inner_grid').call(axis)

    scale

