anchor.diff:  		for (var i = 0; i < data.length; i++) {
   
   			// PREPROCESS
  +			// TODO: Esto tiene q ir fuera
   			let nest = d3.nest()
     			.key(d => d3.timeMonth(new Date(d.key)))
   				.rollup(d => _.sumBy(d, 'value'))
  
positive.code: 
  		// Custom X-axis
  		function xAxis(g) {
  			g.call(d3.axisTop(x).tickSizeOuter(0).tickSizeInner(0).tickFormat(d3.timeFormat("%b %y")))
  			g.selectAll(".domain").remove()
  			g.selectAll(".tick line")
  				.attr("y1", 0)
  
negative.code: 			left: gutter * 15
  		}
  
  		// sizes
  		let container = d3.select(context)
  		let width = +container.node().getBoundingClientRect().width - margin.left - margin.right
  