condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 3.543266666666667e-05 0.0 0.000106298 12 h after dark 0.0 0.0 0.0