condition mean min max 4 h after light 3.58021 3.56629 3.59413 8 h after light 1.45598 0.0 2.91196 12 h after light 1.778215 0.0 3.55643 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