condition mean min max 2 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 10 h after light 0.0 0.0 0.0 14 h after light 0.0 0.0 0.0 18 h after light 0.026499833333333334 0.0 0.158999 2 h after dark 0.01368925 0.0 0.0821355