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 0.063442 0.0 0.190326 12 h after light 0.0 0.0 0.0 3 h after dark 0.09507533333333333 0.0 0.285226 6 h after dark 0.12347833333333334 0.0 0.370435 9 h after dark 0.0 0.0 0.0 12 h after dark 0.20213766666666666 0.0 0.606413