condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.53699 0.0 1.07398 8 h after light 0.53647 0.0 1.07294 4 h after dark 1.039285 0.0 2.07857 8 h after dark 1.57026 0.0 3.14052 12 h after dark 0.0 0.0 0.0