Data from a toasty, South Florida, one-bar-lost LEAF to add to the discussion. I never had any type of Gid meter, so I don't have anything to compare it to, but the results look pretty close to what I'd expect (although I thought the common knowledge was one bar loss = somewhere around 16% capacity loss):
Battery Status: 57.45 AHr, CAP=86.71%
Nice, uniform voltage across the cells: min 3.847; ave 3.858; max 3.865; SOC 36.3% (94 gids)
And, as expected, the battery is very warm, between 89 and 90F.
Air temperatures, down here, have, basically, been in the 80s at night and lower 90s during the day for the past couple of months.