condition	mean	min	max
4 h after light	8.87297	8.58717	9.15877
8 h after light	8.636915	8.55104	8.72279
12 h after light	8.81903	8.14151	9.49655
4 h after dark	10.09599	9.13036	11.4611
8 h after dark	10.321126666666666	9.23158	11.3075
12 h after dark	10.8501	10.163	11.6882