condition mean min max 0 h after light 1.012785 0.0 2.02557 2 h after light 0.519105 0.0 1.03821 4 h after light 0.96785 0.0 1.9357 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 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0