Since tracking my Gid count daily in June and July here in Phoenix (South Chandler area), I've been losing approximately 1 GID a day, L2 charging to 80%, particularly on the hot days. My garage temperature has been sitting around 92 degrees at night, very close to the outside temperature, as I'm trying to use a fan to keep the garage.
This past Monday evening, I parked outside and L1 charged at night to 80%. And since then, I've not lost 1 GID yet.
Monday and Tuesday were particularly hot days, also. Driving home Monday, with the car parked in an outdoor parking lot, my car registered 120 degrees. Then it cooled down to 116 on the drive home. Based on my previous readings, I fully expected to lose 1 GID by the next morning. Tuesday was a little cooler, but still in the 115 range. Nighttime temperature only got as low as 93 degrees.
My GID count this morning, after 80% L1 charging both evenings, is still at 185.