condition mean min max 4 h after light 128.774071 120.922962 136.62518 8 h after light 104.0605655 103.175559 104.945572 12 h after light 120.9196015 103.592418 138.246785 4 h after dark 156.5167615 135.291309 177.742214 8 h after dark 238.325208 238.18759 238.462826 12 h after dark 151.28525 151.28525 151.28525