Universities Used in Table 1 Calculations
- University of Arizona
- University of California - Berkeley
- University of California - Los Angeles
- University of Florida
- University of Illinois - Urbana
- Indiana University
- Iowa State University
- University of Iowa
- University of Kansas
- University of Maryland - College Park
- University of Michigan - Ann Arbor
- Michigan State University
- University of Missouri - Columbia
- University of Nebraska - Lincoln
- Universtiy of North Carolina - Chapel Hill
- Ohio State University
- University of Oregon
- Pennsylvania State University
- University of Pittsburgh
- Purdue University
- University of Texas - Austin
- University of Virginia
- University of Washington
- University of Wisconsin - Madison