| Value | Category | 
|---|---|
| -9 | Don’t know | 
| 1 | Purchased and air use paid by the establishment | 
| 2 | Purchased by the establishment but air time paid by staff | 
| 3 | Purchased by staff but air time is paid by the establishment | 
| 4 | Purchased and air time paid by the staff | 
| Sysmiss |