condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 1.435675 0.0 2.87135 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 2 h after dark 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.886945 0.0 1.77389 12 h after dark 0.0 0.0 0.0