condition	mean	min	max
4 h after light	9.1879685	9.138912	9.237025
8 h after light	8.736104000000001	8.362583	9.109625
12 h after light	8.811223	8.592612	9.029834
4 h after dark	9.2983505	8.165872	10.430829
8 h after dark	8.4167775	7.957656	8.875899
12 h after dark	9.22638	9.22638	9.22638