| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. none, very poor quality, outdated, not relevant to grade | 150 |
5.7%
|
| 2 | 2. minimal, poor quality, dated, not fully relevant to grade | 295 |
11.2%
|
| 3 | 3. in between, average numbers, relevant, at least half the | 808 |
30.8%
|
| 4 | 4. well stocked, good quality, relevant to grade 1, all lear | 1371 |
52.2%
|
| Sysmiss | 1914 |