condition	mean	min	max
4 h after light	6.8421	6.38375	7.30045
8 h after light	6.80213	6.53254	7.07172
12 h after light	7.522085	7.21057	7.8336
4 h after dark	8.199325	7.88061	8.51804
8 h after dark	7.242425	7.17885	7.306
12 h after dark	7.8114550000000005	7.69931	7.9236