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Dear Professor Tom,

Thank you for your email. I appreciate your inquiries, please have a look at my responses here.

Regarding the level of completeness, it is indeed lower. I have observed a noticeable trend, particularly towards the end of last month. This led to the opening of several tickets related to data gaps, battery problems, and stations going offline despite having stable batteries. For instance, during the week of 13-06-2023, I opened 3 tickets related to battery issues and data gaps, 1 for a loose sensor, and another for a communication problem (where the station went offline with a fully charged battery).

In the week of 20-06-2023, I opened 5 tickets concerning data gaps and battery problems, as well as 1 ticket for a non-responsive sensor. During the week of 27-06-2023, I opened 3 tickets related to data gaps and battery problems, 5 cases of communication problems where stations unexpectedly went offline, even with stable batteries. Furthermore, 3 tickets were opened due to non-response from the sensor.

Normally, in standard weeks, I typically encounter only one or two cases of such nature.

As for the potential cause, I believe the decreased solar radiation for recharging the batteries is a contributing factor. It is also true that Kenya is currently facing colder conditions which could be making stations to not recharge their batteries properly. Communication problem and interference( leading to non-response from the sensors) are also contributing to this problem.

Please let me know if you require any further information or assistance. Thank you once again for your attention to this matter.

Best regards,
Victor.

On Wed, Jul 12, 2023, 7:59 PM Dietterich, Thomas <tgd@oregonstate.edu> wrote:

At our meeting today, the question came up regarding data completeness. We are seeing a drop in the number of stations with complete data, and we were wondering why. One hypothesis is that this is the rainy season in E. Africa, so stations are receiving less solar radiation.

 

Question for Victor/Gilbert/Bokure: Are we correct that the level of completeness is lower? Is decreased solar radiation for recharging batteries the cause? Or is there some other issue?

 

--Tom

 

Thomas G. Dietterich, Distinguished Professor Voice: 541-737-5559

School of Electrical Engineering              FAX: 541-737-1300

  and Computer Science                        URL: eecs.oregonstate.edu/~tgd

US Mail: 1148 Kelley Engineering Center

Office: 2067 Kelley Engineering Center

Oregon State Univ., Corvallis, OR 97331-5501

 

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