No

Sampling date

Monitoring sites

Description of the place

1

Feb. 2012

Magomeni (Mapipa)

Junction of Kawawa and Morogoro roads, Urban area, many people, intensive traffic

2

Jun. 2013

Posta, Askari Monument

Urban area, many people, intensive traffic

3

Jun. 2013

Ubungo

Many people, intensive traffic, many vehicles (cars, big trucks, motorcycles and tricycles), power plants nearby, big bus station

4

Feb. 2012, Jun. 2013

Kunduchi

Suburban area, housing, few vehicles, along the beach

5

Jun. (2014)-Jan. (2015)

Vijibweni

Suburban area, housing, few vehicles

6

Dec. 2013 to Dec. 2014

Mwetemo village, Bagamoyo

Rural area, small scale farming, forest, very few vehicles