condition mean min max 0 h after light 0.281715 0.140669 0.422761 4 h after light 0.1410115 0.138692 0.143331 8 h after light 0.2475705 0.208756 0.286385 4 h after dark 0.277129 0.138155 0.416103 8 h after dark 0.1394174 0.0692708 0.209564 12 h after dark 0.3137855 0.20613 0.421441