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 0.11122375 0.0 0.444895 3 h after dark 0.0 0.0 0.0 6 h after dark 0.37548 0.0 0.702372 9 h after dark 0.2692156666666667 0.0 0.447039 12 h after dark 0.2430565 0.0 0.486113