condition mean min max 0 h after light 0.266994 0.0 0.533988 4 h after light 0.272043 0.0 0.544086 8 h after light 0.2717835 0.0 0.543567 4 h after dark 0.5230195 0.519523 0.526516 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0