...
PingER makes measurements to one host two hosts in Mauritius. It One is www.utm.ac.mu at the University of Technology Mauritius in the capital Port Louis. The other is www.groupeunion.mu the Groupe Union Mauritius, in Riche en Eau, Mauritius. They track one another closely.
According to https://en.wikipedia.org/wiki/COVID-19_pandemic_in_Mauritius, on Mar 18 the government announced that all schools and Universities were shutdown. On Mar 19 quarantine regulation s regulations were published and on Mar 22 a curfew order was ordered effective Mar 23. There appears to be an increase in the weeks before and after these interventions.
Mozambique
The rise following Mar 23 is sustained for more than a week and then drops to a level roughly 30% higher than prior to Mar 6.
Mozambique
PingER monitors four hosts in Mozambique. They are www.bancomoc.mz the Bank of Mozambique, www.rm.co.mz Radio Mozambique, www.issm.gov.mz the Insurance Supervisory Institute of Mozambique (ISSM), and www.uem.mz the Universidade Eduardo Mondlane. All are in Maputo the capital.
The first case was Mar 22, on Apr 8 there were 7 new cases for a total of 17 of which 9 were local transmissions. Ther is no mention of interventions in https://en.wikipedia.org/wiki/COVID-19_pandemic_in_Mozambique. There appears to have been an ~50% reduction in IPDVin the 1st week of April for www.bancomoc.mz, and a large drop in IPDV for www.uem.mz in the 1st week in March.
Rwanda
PingER monitors one host three hosts in Rwanda, it is they are: www.auca.ac.rw the Adventist University of Central Africa in Kigali, www.lmis.gov.rw the Rwanda Development Board in Kigali and www.rwandaparliament.gov.rw. There is no Wikipedia web page devoted to the Covid-19 Pandemic in Rwanda. the Rwanda Parliament also in Kigali. They all track one another fairly closely.
According to https://en.wikipedia.org/wiki/COVID-19_pandemic_in_Rwanda the main intervention that would impact Internet traffic would appear to be on 21 March, officials announced a two-week lockdown. Both public and private employees are to work from home, under strict measures. There is a small dip in IPDV around this time, however, it is not evident this is due to the lockdown. Also, there is a larger dip two weeks lateAlso on 9 April, three new cases of coronavirus were identified, out of 720 samples examined in the previous 24 hours. This brought the total number of confirmed cases to 113 people (of which seven had recovered)
Tanzania
PingER Monitors 4 hosts in Tanzania. Three are universities: the Open University of Tanzania (www.out.ac.tz) in Dar es Salaam, the former capital, that retains most government offices and is the country's largest city, principal port, and leading commercial centre; the Sokoine University of Agriculture (www.suanet.ac.tz) in Morogoro a town with a population of 315,866 (2012 census) in the eastern part of Tanzania, 122 mi) west of Dar es Salaam; the State University of Zanzibar (www.suza.ac.tz) in Zanzibar town. The other host is related to education: the Tanzania Commission for Science and Technology (www.costech.or.tz) in Dar es Salaam. Of these only www.suza.ac.tz appears to notice any substantial change in responsiveness. In particular, there are big dips at weekends. Also the peaks before Mar 21 are larger than those after.
Looking at https://en.wikipedia.org/wiki/COVID-19_pandemic_in_Tanzania we find:
On 17 March, the Prime Minister Kassim Majaliwa announced a range of measures, including closing schools. This corresponds
...
strongly with the drop to near zero
...
for www.suza.ax.tz starting on Mar 18.
 |  |
 |  |
...
Uganda
PingER monitors two hosts in Uganda. One is the Victoria University in the capital Kampala (www.vu.ac.ug), the other is a commercial host mail2.starcom.co.ug also in Kampala.
...