condition mean min max 2 h after light 11.982795 9.00437 14.0667 6 h after light 10.44418 9.2399 12.0299 10 h after light 9.108093333333333 5.39978 11.2158 14 h after light 9.98018 8.43572 13.1121 18 h after light 11.931191666666667 7.33055 14.7535 2 h after dark 13.3477 12.1217 15.0307