Looking at pic 2 I would say temps when lights are off, mine is also in an attic and I'm way up on a mountain so always windy and cold, What I did to solve it was adjusted lights to run at night when it's coldest and go off in the day when it's warmest, also try changing your bulb? newest one seems like she can't see the light to follow, I'm nowhere near a pro so please listen to the more experienced growers, but just thought I'd try and help.no indoor attic but its really windy in there