condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0309929 0.0 0.0619858 12 h after light 0.0615825 0.0 0.123165 4 h after dark 0.0 0.0 0.0 8 h after dark 0.1634245 0.106945 0.219904 12 h after dark 1.53e-08 0.0 3.06e-08