condition mean min max 4 h after light 0.2529705 0.251987 0.253954 8 h after light 0.0 0.0 0.0 12 h after light 0.166662 0.0 0.333324 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.091234 0.0 0.182468