Suppose your parents would like to install a solar water heater system in their dream house in Houston, Texas. During the winter, your family likes to use hot water more often than during other seasons. Given that the latitude of Texas is 29.5° and assuming the collectors do not track the Sun's position, should the solar collectors be tilted at an angle greater than, less than, or equal to 29.5° in order to have more hot water in the winter?