condition	mean	min	max
4 h after light	8.38241	7.968829	8.795991
8 h after light	8.065193	7.955039	8.175347
12 h after light	8.179005	7.769023	8.588987
4 h after dark	7.7814890000000005	7.20361	8.359368
8 h after dark	8.01509	7.980449	8.049731
12 h after dark	7.742627	7.742627	7.742627