condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 3 h after dark 0.0626763 0.0 0.103498 6 h after dark 0.0 0.0 0.0 9 h after dark 0.0866403 0.0 0.170469 12 h after dark 0.0 0.0 0.0