public double getLatitudeSpan() {
        return this.maxLatitude - this.minLatitude;
    }
@Test
    public void getLatitudeSpanTest() {
        BoundingBox boundingBox = new BoundingBox(MIN_LATITUDE, MIN_LONGITUDE, MAX_LATITUDE, MAX_LONGITUDE);
        Assert.assertEquals(MAX_LATITUDE - MIN_LATITUDE, boundingBox.getLatitudeSpan(), 0);
    }