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 0.24164466666666665 0.188435 0.328937 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0