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 0.053562 0.0 0.107124 8 h after dark 0.02660495 0.0 0.0532099 12 h after dark 0.0 0.0 0.0