condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.106281 0.0 0.318843 12 h after light 0.03492633333333333 0.0 0.104779 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0