condition mean min max 0 h after light 0.0334292 0.0 0.0668584 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 4 h after dark 0.03283175 0.0 0.0656635 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0