condition	mean	min	max
4 h after light	7.949630000000001	7.68607	8.21319
8 h after light	3.840715	3.83215	3.84928
12 h after light	4.86159	4.44625	5.27693
4 h after dark	7.053515	6.74362	7.36341
8 h after dark	6.734325	6.56001	6.90864
12 h after dark	6.423195	6.28716	6.55923