Fill in blanks in a time series in Javascript where the range of the data is "00"-"23"

input.json

[{"total":16,"sent_hour":"08"},{"total":16,"sent_hour":"09"},{"total":24,"sent_hour":"10"},{"total":14,"sent_hour":"11"},{"total":6,"sent_hour":"12"},{"total":22,"sent_hour":"13"},{"total":32,"sent_hour":"14"},{"total":14,"sent_hour":"15"},{"total":10,"sent_hour":"16"},{"total":10,"sent_hour":"17"},{"total":4,"sent_hour":"18"},{"total":8,"sent_hour":"20"},{"total":6,"sent_hour":"21"},{"total":20,"sent_hour":"22"},{"total":2,"sent_hour":"23"}]

output.json

[{"sent_hour":"00","total":0},{"sent_hour":"01","total":0},{"sent_hour":"02","total":0},{"sent_hour":"03","total":0},{"sent_hour":"04","total":0},{"sent_hour":"05","total":0},{"sent_hour":"06","total":0},{"sent_hour":"07","total":0},{"total":16,"sent_hour":"08"},{"total":16,"sent_hour":"09"},{"total":24,"sent_hour":"10"},{"total":14,"sent_hour":"11"},{"total":6,"sent_hour":"12"},{"total":22,"sent_hour":"13"},{"total":32,"sent_hour":"14"},{"total":14,"sent_hour":"15"},{"total":10,"sent_hour":"16"},{"total":10,"sent_hour":"17"},{"total":4,"sent_hour":"18"},{"sent_hour":"19","total":0},{"total":8,"sent_hour":"20"},{"total":6,"sent_hour":"21"},{"total":20,"sent_hour":"22"},{"total":2,"sent_hour":"23"}]

verbose.js

function makeHourRange(num) {
  return num < 10 ? "0" + num : num;
}

function fillBlanks(ourHours, rawData) {
  var ourData = [];
  var lastFoundPos = 0;
  for (var i = 0, n = ourHours.length; i < n; i++) {
    var curHour = ourHours[i];
    if (rawData[lastFoundPos]['sent_hour'] === curHour) {
        ourData.push(rawData[lastFoundPos]);
        lastFoundPos++;
    } else {
        ourData.push({'total': 0, 'sent_hour': curHour});
    }
  }
  return ourData;
}

var rawData = [{"total":16,"sent_hour":"08"},{"total":16,"sent_hour":"09"},{"total":24,"sent_hour":"10"},{"total":14,"sent_hour":"11"},{"total":6,"sent_hour":"12"},{"total":22,"sent_hour":"13"},{"total":32,"sent_hour":"14"},{"total":14,"sent_hour":"15"},{"total":10,"sent_hour":"16"},{"total":10,"sent_hour":"17"},{"total":4,"sent_hour":"18"},{"total":8,"sent_hour":"20"},{"total":6,"sent_hour":"21"},{"total":20,"sent_hour":"22"},{"total":2,"sent_hour":"23"}];
var hourRange = ["00", "01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23"];
var filledData = fillBlanks(hourRange, rawData);
console.log(JSON.stringify(filledData));