condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 1.01e-09 0.0 3.03e-09 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0