condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.0 0.0 0.0 4 h after light 0.137793 0.0 0.275586 8 h after light 0.0 0.0 0.0 12 h after light 0.1604615 0.0 0.320923 2 h after dark 0.1447215 0.0 0.289443 4 h after dark 0.1402185 0.0 0.280437 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0