im beging 2 think resin production has 2 do with it getting cold at nite, perhaps thc insulates the bud because during fall the temps at nite drop 2 cold, also the strain has a certin amount of resin production, there is less sun during fall and ive seen better resin production in the shade, its safe 2 have so much sun in doors becuase there is no harmfull radiation like the sun has, also i think it has 2 do with hummidity, i think 17-25 RH is max thc,