public static int[] sliceByTime(CSTable table, int timeCol, Date start, Date end) {
        if (end.before(start)) {
            throw new IllegalArgumentException("end<start");
        }
        if (timeCol < 0) {
            throw new IllegalArgumentException("timeCol :" + timeCol);
        }
        int s = -1;
        int e = -1;
        int i = -1;
        for (String[] col : table.rows()) {
            i++;
            Date d = Conversions.convert(col[timeCol], Date.class);
            if (s == -1 && (start.before(d) || start.equals(d))) {
                s = i;
            }
            if (e == -1 && (end.before(d) || end.equals(d))) {
                e = i;
                break;
            }
        }
        return new int[]{s, e};
    }