condition	mean	min	max
4 h after light	9.402055	8.18441	10.6197
8 h after light	8.32366	8.14463	8.50269
12 h after light	9.34622	8.79629	9.89615
4 h after dark	16.931449999999998	16.6752	17.1877
8 h after dark	13.1236	12.9592	13.288
12 h after dark	12.9827	12.1863	13.7791