condition	mean	min	max
4 h after light	4.124625	4.07848	4.17077
8 h after light	3.477105	3.2812	3.67301
12 h after light	4.78421	4.12555	5.44287
4 h after dark	10.9006	10.7171	11.0841
8 h after dark	10.224	10.1649	10.2831
12 h after dark	8.9096	8.87244	8.94676