| Frequency | Percent | Valid Percent | Cumulative Percent | |
Valid | Tower Control | 87 | 30.0 | 30.0 | 30.0 |
Approach Control | 94 | 32.4 | 32.4 | 62.4 | |
Area Control | 109 | 37.6 | 37.6 | 100.0 | |
Total | 290 | 100.0 | 100.0 |
|