condition	mean	min	max
4 h after light	21.5086	18.0015	25.0157
8 h after light	16.73755	16.3845	17.0906
12 h after light	15.5536	13.2224	17.8848
4 h after dark	28.276449999999997	27.9199	28.633
8 h after dark	29.654899999999998	28.5413	30.7685
12 h after dark	32.06235	31.3331	32.7916