yAxis = g => g
.attr("transform", `translate(${margin.left},0)`)
.call(d3.axisLeft(y)
.tickFormat(x => (x)))
.call(g => g.select(".domain").remove())
.call(g => g.selectAll(".tick line").clone()
.attr("x2", width - margin.left - margin.right)
.attr("stroke-opacity", 0.8)
.attr("stroke-dasharray", "2,4")
)