condition	mean	min	max
4 h after light	2.242735	1.78582	2.69965
8 h after light	8.892245	8.01992	9.76457
12 h after light	38.03335	34.7272	41.3395
4 h after dark	45.07225	45.0038	45.1407
8 h after dark	32.0291	30.8117	33.2465
12 h after dark	6.74933	5.81915	7.67951