(c).
| Area | February | March | April | May | ||||
|---|---|---|---|---|---|---|---|---|
| Ceiling | Absent | Present | Absent | Present | Absent | Present | Absent | Present |
| RDP (Braamfischerville) n = 15 | 25.6 (4.2) 16.2–39.0 |
26.7 (3.7) 20.9–36.7 |
22.5 (3.8) 14.7–36.6 |
23.5 (3.4) 17.1–33.2 |
20.1 (4.5) 6.6–33.1 |
20.6 (3.9) 11.4–31.0 |
19.6 (4.8) 6.7–33.1 |
20.5 (3.6) 13.1–28.8 |
| Informal settlement (Hospital Hill) n = 8 | 23.3 (4.8) 15.0–45.4 |
24.6 (2.1) 20.6–30.8 |
21.0 (4.2) 12.8–40.2 |
22.1 (2.1) 17.3–28.3 |
19.0 (5.3) 6.1–39.4 |
20.2 (2.4) 14.1–27.2 |
18.8 (5.8) 6.6–37.5 |
20.3 (2.8) 14.4–28.2 |