condition mean min max 4 h after light 0.01575115 0.0156899 0.0158124 8 h after light 0.0 0.0 0.0 12 h after light 0.0103772 0.0 0.0207544 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0056807 0.0 0.0113614