condition	mean	min	max
0 h after light	7.135605	6.90672	7.36449
4 h after light	4.64528	3.86223	5.42833
8 h after light	5.6704	4.96071	6.38009
4 h after dark	6.707330000000001	6.64346	6.7712
8 h after dark	6.432955	6.01854	6.84737
12 h after dark	6.51596	5.05139	7.98053