anchor.diff:  
   	  // Custom X-axis
   	  function xAxis(g) {
  -	    g.call(d3.axisTop(x).tickSizeOuter(0).tickSizeInner(0).tickFormat((d, i, arr) => ((arr.length + i) % 3) ? null : d3.timeFormat("%b %y")(d)))
  +	    g.call(d3.axisTop(x).tickSizeOuter(0).tickSizeInner(0).tickFormat(xTickFormat))
   	    g.selectAll(".domain").remove()
   	    g.selectAll(".tick line")
   	      .attr("y1", margin.top / 2)
  
positive.code: 		<div class="pure-u-1 pure-u-md-1-2">
  			<div id="rowchart-<%= SecureRandom.random_number(100) %>" class="rowchart"></div>
  		</div>
  	</div> -->
  </div>
  
  <!-- Scripting -->
  
negative.code: 	  // scales
  	  let x = d3.scaleTime().range([0, width]);
  	  let y = d3.scalePoint().range([height, 0]);
  	  let r = d3.scaleSqrt().range([0, 15]) // tamaño de las bolas
  
  	  // domains
  	  x.domain([
  