condition	mean	min	max
4 h after light	7.68595	7.44325	7.92865
8 h after light	6.328670000000001	6.23355	6.42379
12 h after light	6.63199	5.98226	7.28172
4 h after dark	6.20141	5.91506	6.48776
8 h after dark	5.365135	4.85622	5.87405
12 h after dark	6.275175	6.23953	6.31082