condition	mean	min	max
4 h after light	4.88759	3.8153	5.95988
8 h after light	4.45383	4.41882	4.48884
12 h after light	9.70923	9.47424	9.94422
4 h after dark	21.0979	20.4974	21.6984
8 h after dark	23.32665	23.2009	23.4524
12 h after dark	14.7423	14.2143	15.2703