condition	mean	min	max
4 h after light	7.85147	7.7275	7.99356
8 h after light	7.868483333333334	7.68685	8.11374
12 h after light	7.83511	7.6725699999999994	8.07346
4 h after dark	8.104893333333333	7.8937100000000004	8.4306
8 h after dark	8.187343333333333	7.91506	8.54213
12 h after dark	8.24244	8.10409	8.43902