condition	mean	min	max
4 h after light	8.57183	8.48499	8.63584
8 h after light	8.565576666666667	8.4234	8.6739
12 h after light	8.628063333333333	8.60979	8.657119999999999
4 h after dark	8.52593	8.45231	8.58867
8 h after dark	8.492500000000001	8.44006	8.579180000000001
12 h after dark	8.32013	8.14118	8.44731