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 0.0601275 0.0 0.120255 4 h after dark 0.03962015 0.0 0.0792403 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0987445 0.0 0.197489