condition	mean	min	max
0 h after light	4.098125	3.84422	4.35203
4 h after light	4.48121	4.34485	4.61757
8 h after light	8.008855	7.73092	8.28679
4 h after dark	11.91875	11.4493	12.3882
8 h after dark	11.58795	10.7711	12.4048
12 h after dark	4.697595	3.80784	5.58735