assertTrue(rule.isTarget(1, 30, 1)); // 1:30 on Sunday (actually Monday morning)
        assertTrue(rule.isTarget(2, 0, 1)); // 2:00 on Sunday (actually Monday morning)

        // Outside range
        assertFalse(rule.isTarget(21, 59, 1)); // 21:59 on Sunday
        assertFalse(rule.isTarget(2, 1, 1)); // 2:01 on Sunday (actually Monday morning)
    }

    public void test_intervalRule_isTarget_specificDays() {

   *
   * <p>If the dataset contains any non-finite values ({@link Double#POSITIVE_INFINITY}, {@link
   * Double#NEGATIVE_INFINITY}, or {@link Double#NaN}) then the result is {@link
   * LinearTransformation#forNaN()}.
   *
   * @throws IllegalStateException if the dataset is empty or contains a single pair of values, or
   *     both the {@code x} and {@code y} dataset have zero population variance
   */

   *
   * <p>If the dataset contains any non-finite values ({@link Double#POSITIVE_INFINITY}, {@link
   * Double#NEGATIVE_INFINITY}, or {@link Double#NaN}) then the result is {@link
   * LinearTransformation#forNaN()}.
   *
   * @throws IllegalStateException if the dataset is empty or contains a single pair of values, or
   *     both the {@code x} and {@code y} dataset must have zero population variance
   */