What to change
What follows, and what does not
What nine logs can and cannot support, including the advice this record gives no grounds for at all.
What follows from nine logs
Three things nine logs can carry, four they cannot, and why the second list is longer than the first.
Three things the record supports
The claims that hold in a majority of the nine dwellings, rest on enough observations to mean something, and concern things the sheet actually asked about.
Four things it refuses
The claims a reader will want from this record and the reasons each of them is not available, including the two that the data very nearly supports.
The one change anybody logged
One household moved a place away from a window mid-week and its light endings fell. Five days, one dwelling, and every reason not to build anything on it.
Why furniture is the wrong question here
Not because furniture does not matter, but because this instrument cannot see it. What a log of endings can and cannot detect about objects.
What a second set of logs would settle
Four open questions, in order of how cheaply another study could close them, and the two that no amount of logging will reach.
What keeping this log would take
The sheet, the rules and the cost in attention, set down so that the record can be checked by somebody who was not part of it.
What nine logs amount to
The whole record in one page: what was counted, what it showed, what it refused, and what it is reasonable to do with it.