condition mean min max 2 h after light 0.0 0.0 0.0 6 h after light 0.0467865 0.0 0.280719 10 h after light 0.0 0.0 0.0 14 h after light 0.0475685 0.0 0.151577 18 h after light 0.0 0.0 0.0 2 h after dark 0.029960166666666666 0.0 0.179761