condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0173391 0.0 0.0346782 12 h after light 0.0158117 0.0 0.0316234 4 h after dark 0.0414606 0.0 0.0829212 8 h after dark 0.0138514 0.0 0.0277028 12 h after dark 0.0 0.0 0.0