condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.603685 0.0 1.20737 2 h after dark 0.0 0.0 0.0 4 h after dark 0.288852 0.0 0.577704 8 h after dark 0.325983 0.0 0.651966 12 h after dark 0.3085265 0.0 0.617053