Represent each quantity by an integer. See Example 1.
1. A scuba diver is swimming 25 feet below the surface of the water in the Gulf of Mexico.
2. The lowest elevation in the United States is found at Death Valley, California, at an elevation of 282 feet below sea level.

3. The record high temperature in California is 134 degrees above zero Fahrenheit.
4. The average depth of the Pacific Ocean is 14,040 feet below its surface.