public Object getValueAt(int row, int column) {
if ((row < 0) || (row > cycledata.size() - 1) || (column < 0) || (column > 2)) return null;
NumberFormat form = NumberFormat.getInstance();
form.setMaximumFractionDigits(2);
String s;
if (column == 0) s = Util.time2string(cycledata.get(row).getTime());
else if (column == 1) s = form.format(cycledata.get(row).getGreen() * conversion);
else s = form.format(cycledata.get(row).getRed() * conversion);
return s;
}
