condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.050394 0.0 0.100788 8 h after light 0.0 0.0 0.0 4 h after dark 0.050397 0.0 0.100794 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0