condition mean min max 0 h after light 0.545225 0.544739 0.545711 4 h after light 2.99887 2.77524 3.2225 8 h after light 3.5420249999999998 2.77256 4.31149 4 h after dark 3.75348 3.21002 4.29694 8 h after dark 4.039575 3.78715 4.292 12 h after dark 1.34817 1.06432 1.63202