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 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.20132966666666666 0.0 0.603989 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0