Sampling Location | Date | Maximum reading (ppb) | Mean ± S.D (ppb) |
Mapipa, Dar es Salaam | Feb. (1-7) 2012 | 31 | 15 ± 2.3 |
Kunduchi, Dar es Salaam | Feb. (1-7) 2012 | 32 | 19 ± 2.3 |
Kunduchi, Dar es Salaam | Jun. (1-7) 2013 | 44 | 17 ± 6.6 |
Ubungo, Dar es Salaam | Jun. (17-23) 2013 | 25 | 13 ± 2.7 |
Post, Dar es Salaam | Jun. (17-23) 2013 | 33 | 16 ± 2.6 |
Vijibweni, Dar es Salaam | Jun.-14 | 29 | 14 ± 5.2 |
Jul.-14 | 18 | 11.6 ± 2.6 | |
Aug.-14 | 41 | 18.3 ± 8 | |
Sep.-14 | 32 | 15 ± 6.5 | |
Oct.-14 | 33 | 14 ± 5.1 | |
Nov.-14 | 33 | 15 ± 8.9 | |
Dec.-14 | 34 | 20.5 ± 1.7 | |
Jan.-15 | 49 | 28.6 ± 1.4 | |
Mwetemo, Bagamoyo | Dec.-13 | 23 | 17.4 ± 3.0 |
Jan.-14 | 24 | 14.5 ± 0.7 | |
Feb.-14 | 36 | 14 ± 1.1 | |
Mar.-14 | 28 | 9.6 ± 0.5 | |
Apr.-14 | 26 | 8.9 ± 1.0 | |
May-14 | 24 | 9.6 ± 0.5 | |
Jun.-14 | 27 | 10.6 ± 1.9 | |
Jul.-14 | 27 | 12.2 ± 1.1 | |
Aug.-14 | 33 | 11.8 ± 2.5 | |
Sep.-14 | 30 | 13.4 ± 1.5 | |
Oct.-14 | 25 | 10.4 ± 2.0 |