condition	mean	min	max
4 h after light	5.71022	5.31853	6.10191
8 h after light	6.289285	5.71099	6.86758
12 h after light	6.342155	6.13985	6.54446
4 h after dark	7.769105	7.68008	7.85813
8 h after dark	7.123155	6.96341	7.2829
12 h after dark	7.36489	7.16514	7.56464