condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.091207 0.0 0.182414 8 h after dark 0.04505505 0.0 0.0901101 12 h after dark 0.0 0.0 0.0