condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.115892 0.0 0.347676 12 h after light 0.08987275 0.0 0.359491 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.18988666666666668 0.0 0.56966 12 h after dark 0.169897 0.0 0.339794