| Usage and Thruput Plots | 2000 | 2001 |
| Call Duration/Estimated Cost | 2000 | 2001 |
| Usage and Thruput Plots | 2001 | 2002 |
| Call Duration/Estimated Cost | 2001 | 2002 |
| Usage and Thruput Plots | 2001 (Revelle) | 2002 (Revelle) |
| Call Duration/Estimated Cost | 2001 (Revelle) | 2002 (Revelle) |