| Value | Category | Cases | |
|---|---|---|---|
| -3 | illegitimate missing | 0 |
0%
|
| 1 | No need to travel - source is on site | 23 |
74.2%
|
| 2 | Less than 2 minutes | 3 |
9.7%
|
| 3 | 3-5 minutes | 2 |
6.5%
|
| 4 | 6-10 minutes | 1 |
3.2%
|
| 5 | 11-20 minutes | 2 |
6.5%
|
| 6 | More than 20 minutes | 0 |
0%
|
| 11 | .B | 1 | |
| Sysmiss | 257 |