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 1.5833333333333333e-07 0.0 4.75e-07 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0