condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 1.6333333333333333e-06 0.0 4.9e-06 12 h after dark 0.0 0.0 0.0