| Group 1 | Group 2 | Group 3 | Group 4 | Group 5 |  | |
---|---|---|---|---|---|---|---|
Grade 1 | Counts of pairs | 1 | 40 | 4 | \ | \ | 45 |
sq (%) | 159.7 | 49.3–283.9 | 159.1–311.6 | \ | \ | 49.3–311.6 | |
Grade 2 | Counts of pairs | \ | 15 | 29 | 2 | \ | 46 |
sq(%) | \ | 21.4–66.1 | 17.3–121.2 | 67.0—145.0 | \ | 21.4–145.0 | |
Grade 3 | Counts of pairs | \ | \ | 21 | 31 | 10 | 62 |
sq(%) | \ | \ | 9.5–31.7 | 7.3–65.1 | 42.9–57.7 | 7.3–65.1 | |
 | 1 | 55 | 54 | 33 | 10 | 153 |