condition	mean	min	max
4 h after light	8555.9	8555.9	8555.9
8 h after light	9496.85	7933.0	11060.7
12 h after light	8565.9	7844.9	9286.9
4 h after dark	6389.450000000001	6101.3	6677.6
8 h after dark	6039.95	5317.4	6762.5
12 h after dark	6576.3	5556.6	7596.0