private static void deriveTime(List<LocalTime> list) {

    long total = 0;
    long start = System.nanoTime();
    for (LocalTime dt : list) {
      total += dt.get(HOUR_OF_DAY);
      total += dt.get(MINUTE_OF_HOUR);
      total += dt.get(SECOND_OF_MINUTE);
      total += dt.get(NANO_OF_SECOND);
    }
    long end = System.nanoTime();
    System.out.println("LocalT:    Derive: " + NF.format(end - start) + " ns" + " " + total);
    result("LocalT-V", end - start);
  }