timesfpd

<!DOCTYPE html>
<meta charset="utf-8">
<style> /* set the CSS */

body { font: 12px Arial;}

path { 
    stroke: steelblue;
    stroke-width: 2;
    fill: none;
}

.axis path,
.axis line {
    fill: none;
    stroke: grey;
    stroke-width: 1;
   // shape-rendering: crispEdges;
}
<svg width="960" height="500"></svg>
</style>
<body>

<script src="https://d3js.org/d3.v4.min.js"></script>

// Set the dimensions of the canvas / graph
var margin = {top: 30, right: 20, bottom: 30, left: 50},
    width = 960 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;

var x = d3.scaleLinear().range([0, 330]);
var y = d3.scaleLinear().range([height, 0]);
var z = d3.scaleOrdinal(d3.schemeCategory20);

// Define the axes
var xAxis = d3.axisBottom().scale(x).tickValues([0, 1, 2, 3,4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23]);

var yAxis = d3.axisLeft().scale(y);

// Define the line
var valueline = d3.line()
    .x(function(d) { return x(d.Hour); })
    .y(function(d) { return y(d.Incidents); });
    
// Adds the svg canvas
var svg = d3.select("body")
    		.append("svg")
        .attr("width", width + margin.left + margin.right)
        .attr("height", height + margin.top + margin.bottom)
    		.append("g")
        .attr("transform", 
              "translate(" + margin.left + "," + margin.top + ")");

// Get the data
d3.csv("dangerTimes.csv", function(error, data) {
    data.forEach(function(d) {
        d.Hour = d.Hour;
        d.Incidents = +d.Incidents;
    });

// Scale the range of the data
    x.domain(d3.extent(data, function(d) { return d.Hour; }));
    y.domain([0, d3.max(data, function(d) { return d.Incidents; })]);

// Add the scatterplot
    svg.selectAll("dot")
        .data(data)
      	.enter()
      	.append("circle")
        .attr("r", function(d){return d.Incidents * .025;})
        .attr("cx", function(d) { return x(d.Hour); })
        .attr("cy", function(d) { return y(d.Incidents); })
    		.style("stroke", function(d) { return z(d.Incidents); });;

// Add the X Axis
    svg.append("g")
        .attr("class", "x axis")
        .attr("transform", "translate(0," + height + ")")
        .call(xAxis);

// Add the Y Axis
    svg.append("g")
        .attr("class", "y axis")
        .call(yAxis);

});

</script>
</body>

Modified http://d3js.org/d3.v4.min.js to a secure url

https://d3js.org/d3.v4.min.js