condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.0 0.0 0.0 4 h after light 1.356725 0.0 2.71345 8 h after light 0.0 0.0 0.0 12 h after light 0.78996 0.0 1.57992 2 h after dark 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 2.251935 0.0 4.50387 12 h after dark 0.0 0.0 0.0