condition	mean	min	max
4 h after light	16.617728	13.623417	19.612039
8 h after light	17.688843499999997	16.821274	18.556413
12 h after light	18.5183705	17.552487	19.484254
4 h after dark	17.7808345	15.600447	19.961222
8 h after dark	19.3471725	19.084893	19.609452
12 h after dark	16.152499	16.152499	16.152499