condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.046848 0.0 0.140544 9 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.108066 0.0 0.206722 12 h after dark 0.0 0.0 0.0